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🛏 | Sophisticated and fashionable popular hotel in Sapporo / Susukino like France! MERCURE SAPPORO


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A sophisticated and fashionable popular hotel in Sapporo and Susukino, which is typical of France! MERCURE SAPPORO

 
If you write the contents roughly
There are plenty of amenities that make you feel particular about French shampoo, conditioner, and body soap.
 

A popular hotel in Sapporo that I introduced the other day → Continue reading

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WEB media "V-TRIP" where cameramen and video creators travel around the country to introduce tourist and gourmet information on hotels and resorts all over Japan, focusing on videos.


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石 鹸

In this item,JIS X 0213Contains characters specified by :2004 (Details).

石 鹸(Stone, soap, soap,Grape: sabao) Is a term that generally indicates a cleaning agent for removing stains.AlsoHigher fatty acids OfSaltIs a general term for.

Soap as a general term and soap as a chemical term often overlap, but what is not chemically soap is generally called soap, and vice versa.

Overview

SurfactantAndoilBy the action of dispersing dirt containing oil and oil in waterWashingDemonstrate ability[1].

In addition, there is a "sterilization action" that physically removes bacteria and viruses by washing them off, but this is different from "sterilization" that kills bacteria.Not all soaps have a "bactericidal effect" against bacteria and viruses, but for the purpose of sterilizationReverse soapAnd some medicated soaps have a bactericidal effect.

The main component of soap is fatty acid salt, such as beef tallow, sheep fat, lard, hardened oil, coconut oil, and cottonseed oil.greaseTheSodium hydroxideSuch asbaseSaponificationCan be made by[2]..Soaps that contain only fatty acid salts and no additives are called pure soaps, but many soaps are not pure soaps.Carbonate,spicesEtc. are added.

Soap has been handmade since ancient times.Even today, it is easy to make by hand at home, but most of the commercial products are industrially made.

In generalWedThesolventIt is intended to be used by dissolving it as, but devised so that it can be used without waterDry shampooThere is alsoNursing care,During a disaster,Space stationIs also used[3].

Soap ishard waterDoes not foam and forms soap scum, which reduces the cleaning effect.[4][5].

Sort

Classification by component

Such as sodium and potassiumAlkali metalAlkaline soap of salt and metal salt other than alkali metalMetal soapSoap is usually referred to as the former.

Alkaline soap is water-soluble, has remarkable surface activity, has foaming power, and has excellent detergency.

The properties of soap differ depending on the type of alkali metal used.Sodium soap made from sodium hydroxide is solid, and potassium soap made from potassium hydroxide is often soft and liquid.Lithium soap also tends to be hard.Lithium soap is exclusivelyGreaseUsed as.

Classification by use

Body soap

Soap used for the human body.Subject to regulations such as the Pharmaceutical Affairs Law in each country[6]..There are bath soap (body soap), face wash soap, hand wash soap (hand soap), medicated soap, etc.Solid soap is sodium soap, liquid soap, body soap,shampooIs a highly soluble potassium soap.In addition, there is also a combination of sodium soap and potassium soap."Synthetic bar soap" is not soap, but JapanesePharmaceuticals and medical devices lawThen "CosmeticsIs treated as.
The word "cosmetic soap" is sometimes used, but there is no clear definition for this.[6]..Bar soap for the body is sometimes called "cosmetic soap", and "face wash soap" and "bath soap" are sometimes collectively called "cosmetic soap".[6]..In either case, "cosmetic soap" usually refers only to bar soap, not liquid soap.[6].
  • Medicated soap
For sterilization and disinfection.Used for parts of the body, tableware, towels, etc.Under the Japanese Pharmaceutical and Medical Device LawQuasi-drugIt is treated as.It contains triclocarban, trichlorocarbanilide, isopropylmethylphenol and the like as bactericidal components.
2016 year 9 month,US Food and Drug Administration(FDA)TriclosanAnnounced that it is going to stop selling antibacterial soap containing 19 ingredients such as triclocarban in the United States.[7]..In response to this, the Ministry of Health, Labor and Welfare of Japan also issued a notice urging the change of the ingredients of medicated soap containing triclosan etc.[8][9].
  • Japanese Pharmacopoeia Ken Ken
Japanese PharmacopoeiaListed inMedicineAnd a medical cleaner,Liniment agent,SuppositoryBase, undergrowthIntestineUsed for[10]..Not for sterilization.White to pale yellowish white powder or grain with an odor[10].

Non-body soap

  • Laundry soap
Solid soap for hand washing,Washing machinePowder soap for More expensive than synthetic detergent,Water pollution, Dermatitis,Fluorescent agentThe effect of avoiding fading of clothing due to can be expected. The higher the water temperature, the better the cleaning power,bathOften uses the remaining hot water. In addition, in order to suppress the yellowing caused by residual soap residue,vinegar,citric acidIs used.
  • Kitchen soap
Cleaning used dishes and foodParasiteFor removing eggs. Tableware is slippery and has a high risk of damage. Popularized in recent yearsdishwasherIt is difficult to use soap because of its structure, but there are products with adjusted ingredients.

Industrial soap

The purpose is to remove oil stains on machine parts such as factories.Because the degree of dirt is strongWood flour,PerliteMany contain abrasives such as.

Classification by shape

SaponificationSolids and liquids are separated at the manufacturing stage because the easiness of solidification changes depending on the alkali used for. What is saponified with potassium hydroxide is called potassium soap (fatty acid potassium), and what is saponified with sodium hydroxide is called sodium soap (fatty acid sodium), and potassium soap has a lower melting point than sodium soap.

Bar soap (bar soap

Molded sodium soap into a size that fits in your hand. However, some laundry soap is available in kilograms. Since it will crack when dried, it is packaged in a moisture-proof manner. Until the spread of plastic packagingParaffin paper(Glassine paper) was used.

Paper soap

It is made by shaving bar soap thinly like paper and can be carried as a single hand wash.Originally for kidsMom-and-pop candy storeWas sold at[Annotation 1].
In recent years, sales have been declining,New coronavirusWith the epidemic, interest in hand washing and sterilization has increased, and it is gaining attention again.[11][12][13].

Powdered soap

Mainly the shape of laundry soap. Easy to measure and melt the required amount.

Liquid soap

Potassium soap that changes from jelly to mucous at room temperature is moderately hydrated.HotelIt is popular in accommodation facilities because it is advantageous for management to replenish only the reduced amount.There are two types, one for hand washing (hand soap) and the other for bathing (body soap). The former emphasizes sterilization and cleaning, and the latter emphasizes fragrance and moisturizing.Besides liquidgelShape,There is a product in the form of a push container.

Not soap

It is not a soap because it does not use fatty acid salts as a surfactant, but there are some that are generally or legally referred to as "soap".

Invert soap (positive soap)

Aliphatic as a surfactantAmine(Quaternary ammonium ion) Is used. Ions with surface activityPositive ionBecauseCationic surfactantare categorized.Soap fatty acid ionsanionAnd because the nature is oppositeReverse soapCalled.
Detergency is low, but bactericidal power is strong,Fungicide,disinfectantIt is used as.When mixed with soap, the surfactants cause a neutralization reaction to cancel each other out, and the effect is reduced.
Benzalkonium chloride,Benzethonium chlorideIs used as a disinfectant for external use to disinfect instruments and hands.

Amphoteric soap

A fungicide classified as an amphoteric ion surfactant.Used as a disinfectant.The bactericidal power is maintained to some extent even when mixed with ordinary soap.

Stainless soap

A deodorant product that uses the ionic nature of metals. The working principle is completely different.

History

起源

The history of soap is said to start in the 3000s BC[14].

For stains that have been difficult to remove with just water since ancient times粘土,Lye, Vegetable oils and seeds[Annotation 2]Etc. were used, but eventually of animalsmeatDripping when bakingfatfirewood OfAshA mixture ofalkalibygrease OfSaponificationIt is believed that the soap was discovered spontaneously. "Sapon" of soap is "ash juice" or "base(alkali)” (saponifiable=basic, alkaline), and when the soap is flatly interpreted, it is a “solid base” or “solid alkali”.

Legend has it that as a gift to God, the fat and ash produced when a sheep was baked gave birth to what appeared to be soap.Ancient romeof"(English editionIt is an event in soap Is said to have become the etymology of[14][15].. on the other hand,SumerClay plateThere is a description of medicated soap in. In the Middle East, where soap is still a local industry (Nables,Aleppoand so on[16].

Spread

In EuropePlinius OfNatural historyIs the first description,GermanicGaulWas used bySalting outIt was written that Then it becomes obsolete, butArabianTransmitted toquicklimeWhen the manufacturing method that uses8st centuryWas reintroduced via Spain and became established as a cottage industry.12st centuryAfter that, instead of the existing potassium soapolive oilSolid soda soap made from is widely spread around the Mediterranean coast, especiallyFrance OfMarseille The9st centurySince then, it has become the center of production from major distribution centers.

At the end of the 18th centuryIndustrial revolutionSince it became possible to mass-produce alkaline materials as raw materials under the conditions, soap was also mass-produced and spread.[14]..Coupled with advances in medicine皮膚病And many oralEpidemicHas decreased[17].

The world's first synthetic detergent was born in Germany in 1916[14].. In 1933, the world's first household synthetic detergent was launched in the United States[14].

Japan

JapanToAzuchi-Momoyama PeriodPresumed to have been transmitted by Westerners to[18].. The earliest solid literature is1596(KeichoAugust 8st year),Mitsunari Ishida HakataThe Merchant ofShinya KamiyaIt is a thank-you note of soap sent to.

The first manufacturer of soap wasEdo Period OfDutch scholarUdagawa Harusai-Udagawa Retsuso,1824(Bunsei7 years). However, this isMedicineWas as[19].

The first commercial manufacture of laundry soap wasYokohamaIsogo OfTsutsumi IsoemonIs[19]..Tsutsumi Isoemon Soap Factory1873(Meiji6th year) March 3, Miyoshi-cho, Yokohama (current:South wardEstablished Japan's first soap factory at around 2-25 Mansecho) and succeeded in manufacturing laundry soap in July of the same year and toilet soap in the following year.1877(10th year of Meiji), 1st sessionNational Business ExpositionReceived the flower crest award. afterwards,Hong Kong-ShanghaiThe soap manufacturing business reached its peak in the first half of the Meiji 10's.1890(23th year of Meiji),Current newsIt won the first place in the popular vote of excellent domestic soap sponsored by the sponsor, but it reduced the management scale in the nationwide recession. The following year, founder Isoemon died. Two years later1893(Meiji 26), it went out of business. Under his gateKao,ShiseidoAnd so on.

Soap became popular in Japan in the 1900s.[14].

Public bathBegan to be used in the Meiji 10's, and laundry soap was called "wash soap" and wash soap was called "face soap".[18].. Also, fresh water was precious on boardImperial Japanese NavyThen they called them Senseki and Menseki respectively.

Second World WarImmediately before, it became difficult to obtain raw oils and fats, and the standardization and price of soaps were gradually unified. The name was changed from toilet soap to bath soap, and was integrated with laundry soap to become household soap.1943IsBentoniteWartime soap with a mixture of is introduced. In the next 1944, as No. 2 soapKaolin, A soap was produced in which the admixture was recognized as No. 3 soap up to 80%. These were called mud soaps, but even worse soaps circulated after the end of the war.[20].. Bentonite and kaolin, which were used as admixtures at the time, appeared after the war.CleansingMay be used for face wash soap.

Manufacturing method

There are three types: fat and oil saponification method, fatty acid neutralization method, and ester saponification method. The raw material isNatural fats and oilsalkaliHowever, it uses auxiliary materials that are not included in the final product due to the manufacturing method. Mainly as natural fats and oilsbeef tallowCoconut oilBut in additionolive oil,Horse oil,Rice oil,Camellia oilVarious oils and fats are used.

Fat saponification method
Raw oil and fatSodium hydroxideSaponificationThen,SaltSalting outAnd separate. It is an ancient manufacturing method that does not use raw fats and oils, and is commonly called. It is mainly used by small businesses because it is possible to make unique soaps whose quality is somewhat unstable.
Fatty acid neutralization method
Raw oil and fat at high temperatureHydrolysisObtained byfatty acidThedistillationdo itGlycerinSeparated from and aloneneutralizeTo do. It is used in the production of large-scale manufacturers (continuous neutralization method) because it provides soap that is gentle on the skin without alkali residue and is suitable for mass production with stable quality. Since the separated glycerin has a moisturizing function, it may be reconstituted later.
Ester saponification method
As a pretreatment,Triacylglycerol)Methyl alcoholReactTransesterification reactionByFatty acid methyl ester(BiodieselIt is also the main component of) and then saponified. Since it can be saponified at low temperature in a short time, it suppresses the generation of odors and impurities due to the oxidation of fats and oils. It is used in products for allergy control.

ingredient

Commercial soapfatty acid OfalkaliThe main component is salt, and inorganic salts (Carbonate-Silicate-PhosphateEtc.) and sequestering agents (Chelate), as an additivespices,dye, Glycerin, natural fats and oils,Herbs,vitaminAnd so onpreservativeThere are also products to which is added, but there are also products that claim to be additive-free.

On the other hand, except fatty acid saltsSurfactantSome products contain, and are classified into composite soap, synthetic detergent, synthetic toilet soap, etc. depending on the content.

Type of fatty acid

Fatty acidsHydrophilic OfCarboxyl groupBound toLipophilic OfhydrocarbonThere are many types, and the properties of soap vary depending on its lipophilicity (the higher the carbon number, the stronger). Soap made from fatty acids with a small number of carbon atoms has weak hydrophilicity instead of strong hydrophilicity and is easily dissolved in cold water, but the detergency for oil is reduced. On the other hand, if the carbon number is large, the cleaning power for oil stains is strong, but it is difficult to dissolve in water. For this reason, those having 12 to 18 carbon atoms are often used.

Types of fatty acids and properties of soap[21]
Fatty acid nameCarbon numberExample of raw fats and oilsEase of melting in cold waterDetergencySkin irritation
Lauric acid12Coconut oil,Palm kernel oilEasy to meltRather largeSmall persistence
Myristic acid14Palm oil, palm kernel oilmeltLRather coarseweak
Palmitic acid16Palm oil,beef tallowdoes not melt easilyLGreat sustainabilityweak
stearic acid18beef tallowInsolubleXLFoamingweak
oleic acid18 unsaturatedPalm oil, beef tallow,olive oilEasy to meltLDetailedWeak

Type of alkali

For cleaning applications,sodiumWith saltpotassiumSalt is used.Potassium salt is more soluble than sodium salt, and for bar soap and soap powder,Liquid soapIs used for.For example, bath soap is almost sodium soap in Japan,EuropeEtc. Tap water硬度Potassium soap is also considered a bath soap in high-lying areas.

Other than thisAlkali metalIslithium,rubidium,cesiumSalts such as have cleaning ability, but are rarely used. Lithium soap is not for cleaning,GreaseWidely used as.

Salts other than alkali metals have low water solubility andMetal soapAlthough it is called, when it is used for grease, it is not necessary to worry about water solubility, so calcium and aluminum salts are also used.

Metal soap is industrially important.paint,Printing ink OfDrying acceleratorIn addition to being used as a (dryer), in terms of militaryIncendiary(Napalm bulletEtc.) Soap for washing has a hardness component (calcium,magnesium) Loses water solubility and does not have detergencySoap residueHowever, this is also metallic soap.

Cleaning aid

Alkaline agents, softeners, water-conditioning agents such as carbonates andZeoliteInorganic salts such as silicates are used. Carbonate and zeolite, which have the action of releasing water, are used for powdered soap, and silicate (which retains water) is used for bar soap.Water glass) Is used.

Sequestering agent

Transition metalAlso react with fatty acid salts to form soap scum (metal soap), which are often colored (egCopper soap). In addition to the hardness component impairing the cleaning effect, there is concern about problems due to coloring.Etidronic acid(HydroxyethanePhosphonic acid) Salt, edetic acid (Ethylenediaminetetraacetic acid) Salt is used.

Additive

Perfumes are often added to soften the odor of fatty acids, and some products have a prominent dye added to distinguish laundry soap from toilet soap. In addition, toilet soaps are on sale in various products that are said to be moisturized by additives and useful for the skin. On the other hand, of the main component fatty acid saltcorruption,MoldTo prevent the breeding ofDibutyl hydroxytolueneAre used as preservatives (for this reason, additive-free products need to be taken into consideration by the user to prevent deterioration).

Fungicide

For medicated soap,Benzalkonium chloride,TriclosanIs an active ingredient. However, in order for these to exert their effects, it is necessary to lower the pH, and instead of a fatty acid salt, a synthetic surfactant (sodium acylisethionate (Sulfonic acid), sodium acylglutamate, etc.) is used, and there is a high possibility that it does not correspond to the soap here.

Compared to synthetic detergents, natural soap with a history of 5000 years has a strong antiviral effect and is known to be excellent in preventing rough skin due to frequent hand washing.[22][23].

Types of surfactants

It is displayed as "soap base" in the ingredient name of the Pharmaceuticals and Medical Devices Act. On the other hand, synthetic surfactants are displayed by substance name. If the manufacturer declares pure soap or no additives for the purpose of appealing the product, the fatty acid salt is likely to be the main component.

Product name display stipulated by the Household Goods Quality Labeling Act
Product name displayDisplay targetIn surfactant
Ratio of fatty acid sodium (pure soap content)
Synthetic detergentThe main cleaning action is due to the action of surfactants other than pure soap.0% or more
Less than 70% for laundry
Less than 60% for kitchen
The main cleaning action is due to the surface active action of pure soap,
Those containing a surfactant other than pure soap.
70% or more for washing
Over 60% for kitchen
Less than 100%
SoapThe main cleaning action is due to the surface active action of pure soap,
Those containing no surfactant other than pure soap.
100%

Laws and regulations

JapanIn the legal system of, body soap (bath, medicated) isPharmaceuticals and medical devices lawInCosmeticsQuasi-drugAs for household soap (for laundry and kitchen)Household goods quality labeling methodIn[24]It is standardized in.

The Pharmaceuticals and Medical Devices Act requires all ingredient names to be labeled, but there is no obligation to label the categories and proportions of soap and detergent as in the Household Goods Quality Labeling Act. In the case of toilet soaps, the contents are listed in descending order of content, but the content of medicinal soap is not clear because it is specified that the active ingredient and other ingredients are separated as quasi-drugs. For toilet soapJIS standardsThere is (K3301).

According to the household goods quality labeling method, 70% or more of laundry soap and 60% or more of kitchen soap are fatty acid salts, depending on the type and content of surfactant.[25]Is obligatory.As a content test method, there is a soap test method (K3304) specified by JIS.[26].

Handmade soap

It is relatively easy to make soap by hand, as long as you have protective equipment to protect your eyes and skin and materials.Handmade soaps are used for science experiments, allergy countermeasures, and environmental protection (recycling).

Handmade method

An example is given below.

Prepare fats and oils, alkaline agents, and salt as materials (raw materials).however,Sodium hydroxide,Potassium hydroxideSuch as high concentrationDeleterious substanceA heat-resistant container and protective equipment (rubber gloves, eye-protecting goggles) are required to use.

Due to the nature of the work, there is a risk of rough skin and chemical burns, so it is desirable to obtain sufficient knowledge and perform it under the supervision of an experienced person.

  1. The amount of alkali required for the reaction is the amount of the raw material oil and fat used.SaponificationValue and alkaliMolecular weightAsk from.
  2. Dissolve the alkali in a small amount of water, add the raw material oil and fat, and stir.
  3. The viscosity gradually increases and the reaction is completed in about 20 minutes (if it does not harden, the amount is wrong)
  4. After standing for 2 weeks, saturated saline is added and stirred, and the separated solid content is taken out.
  5. pH test paperConfirm that there is no residual alkali and that it is within the alkaline range of soap.

Science experiment

By making soap, the structure of fats and oils, saponification with alkali,Salting outBecause you can experience various chemical knowledge such as, surface activity, etc.science,ChemicalExperimentEducationWas used for.

Environmental protection

the 1990sUsed at hometempuraOilSewerWaste oil from households (mainly used) has been taken up as a social problem.Tempura oil) Was the catalyst for widespread use of soap, and until now,Environmental protectionFor activityRecyclingSoap making is widely practiced in homes and local communities as one of the practices of the activity.In addition, to make known what kind of adverse effects the consumption behavior of each household has on the global environment.Environmental educationSometimes it is done as a part of.

Allergy measures

Also, people who have problems with commercial soap and cannot use it, for example, commercial soapAdditiveByAllergiesIn order to avoid it, those who do not make it should be avoided from manufacturers and carefully select raw materials that do not cause allergies to themselves with their own eyes and hands, for exampleOlive oilThere are also people who make "safe soap" just for themselves, using these as raw materials. The resulting soap is a byproductGlycerinIt remains a little, but it is harmless.

Environmental impact

Soap and synthetic detergent are completely different in cleaning capacity and required amount per gram, so do not make a simple comparison.

SoapSynthetic detergentIt is said that the impact on the environment is smaller than that of soap molecules in the environment.SurfactantIt is based on the rapid loss of function and the short time to final decomposition.However, since synthetic detergent products used for the same purposes as soap contain various sub-ingredients and additives, it does not make much sense to compare only the main ingredients.

2014 year 4 month,Act on Examination of Chemical Substances and Regulation of ManufacturingSubstances for which risk assessment needs to be prioritized (priority assessment chemical substances)[27]Is specified in.

In 2014, a paper summarizing more than 250 papers and reports on the environmental properties and effects of surfactants was published, and although surfactants including soap are used in very large quantities and widely released into the aquatic environment, they are now. At the usage level of the aquatic environment orSedimentReported that it would not adversely affect the environment[28].

toxicity

Biology 細胞 TheCell membraneImportant on the surfaceSubstance metabolismAnd the cell membrane is delicateinterface(Here, the boundary surface where water and oil come into contact)CytotoxicityIn the testSurfactantWhen you act, it loses its function and dies. For this reason, soap orSynthetic detergentEspecially surfactants such asAquaticTotoxicityIs strong and exists in a certain concentration or more in the environmentEcologyWill be adversely affected.

But the soap硬度component(calciummagnesiumBy the blockade of (ion)HydrophilicLoses and does not dissolve in waterMetal soap(Soap residue). Also,BacteriaBy assimilation of fatty chainsLipophilicAlso tends to fall. In this way, the loss of surface activity also eliminates toxicity.

In the fish toxicity test, of soap (fatty acid sodium)Half the lethal doseHas a toxicity of around 100 mg/L, which is weaker than 1-10 mg/L synthetic detergents (such as LAS)[29]However, since it is a laboratory environment, hardness is not supplied and the concentration of bacteria is low, so the value is small.

On the other hand, synthetic detergent硬度As a product that is not affected by, and as a product that uses cheap synthetic resin as a raw material, the surface activity continues and the toxicity continues. RepresentativeLinear alkylbenzene sulfonate sodium In the case of (LAS),Alkyl groupIs oxidizedCarboxyl groupIn that case, the lipophilicity is significantly reduced. However, this reactionSedimentIt does not proceed in an oxygen-poor environment, but tends to remain if it is adsorbed by solid matter in water and precipitates.Sewage treatmentIt is for this reason that they remain in the sludge.

Degradability

Make up soapfatty acidIs actively ingested and decomposed by bacteria and aquatic organisms in the environment.For this reason, both temporary decomposition and complete decomposition are high, and the half-life in the environment is short.Environmental loadIs considered low.

However, thisBODHigh and underwaterDissolved oxygenIt also means that the consumption rate of water is high, which increases the risk of oxygen deficiency in water-stop areas where the supply of oxygen is poor. In addition, in regions where the hardness of water is high, it is necessary to increase the amount used, so the organic load becomes high (on the contrary, if it is extremely low, hydrophilicity may remain and toxicity may be delayed).

On the other hand, the representative compound of synthetic detergent (LAS) has a BOD of 47%, which is almost half in 5 days.[30]Yes, but slower than soap. In the case of fish, the half-life in the body is 1-6 days and it takes time to assimilate, so it has the potential to accumulate.

Oil ball

From around 1997, white oil and fat lumps with a foul odor began to be seen on the coast of Tokyo.This is because the oil discharged from homes and business establishments and flowing into the sewage becomes fatty acid by bacteria in the sewage, and in the sewage.calciumIt reacts with ions to become calcium soap.[31]..Also called an oil ball[32][33]..It's a problem in ChinaRift oilIs of the same kind.The main components are higher fatty acids such as palmitic acid, stearic acid, myristic acid, and oleic acid, and metal salts thereof.[31].

Confluence type adopted in Tokyo etc.SewerHas a structure in which untreated sewage is discharged into rivers and the sea during heavy rains.[34]..The untreated sewage discharged in this way is called overflow water.It was the cause of oil balls because it contained oil and filth discharged from homes and businesses.In recent years, it has been decreasing due to the improvement of sewage facilities.[35].

culture

in Japan,Summer gift-Year-end giftAlthough it is a standard product as a courtesy gift, it may be taken as a warning or rubbing that the appearance is bad and the body odor is worrisome depending on the culture, so consideration is required.

The custom of putting soap in a chest and enjoying the incense transferred to clothes isaromaticIt came from the fact that soap was a familiar fragrance until it became popular. Nowadays, the smell of soap (fatty acid) is also targeted.

If it is given to examinees, it will be auspicious (sliding, falling), or vice versa.escape from evilThere was a youth culture such as meaning.

Put soap in a mesh bag at school etc.ShekouIt was widely used to hang it onCrowHas been eaten, so it has decreased.

Utilizing the moderate softness of solid soap,CarvingUsed as a material.

Manufacturing distributor

世界
Japan

footnote

[How to use footnotes]

注 釈

  1. ^ The paper soap sold at the candy store was also used by girls to enjoy the scent by sandwiching it between books.
  2. ^ saponinContains a lot ofEgonoki,Swordfishetc.IndiaIs also called reetha or soapnut, and powder is still used.

Source

  1. ^ Tumosa, Charles S. (September 2001). “A Brief History of Aluminum Stearate as a Component of Paint" (English). cool.culturalheritage.org. 2022/5/26Browse.
  2. ^ Clean cult.What's The Difference Between Soap and Detergent" (English). cleancult. 2022/5/26Browse.
  3. ^ bathJapan Aerospace Exploration Agency
  4. ^ Holman, John S. (2001). Chemistry.. Phil Stone (2nd ed. Ed.). Cheltenham: Nelson Thornes. ISBN 0-7487-6239-6. OCLC 49984041. https://www.worldcat.org/oclc/49984041 
  5. ^ "Soap and hard / soft water”(Japanese). Soap encyclopedia. 2022/5/26Browse.
  6. ^ a b c d Japan Soap and Detergent Association
  7. ^ Commissioner, Office of the (February 2020, 3). “FDA issues final rule on safety and effectiveness of antibacterial soaps" (English). FDA. 2022/5/26Browse.
  8. ^ "Materials released by the Ministry of Health, Labor and Welfare (quasi-drugs / cosmetics) | Pharmaceuticals and Medical Devices Agency". www.pmda.go.jp. 2022/5/26Browse.
  9. ^ Online, DI. “Ministry of Health, Labor and Welfare requests change of ingredients of medicated soap”(Japanese). DI Online. 2022/5/26Browse.
  10. ^ a b Complete Encyclopedia of Japan. "Ken Ken". Koto bank. 2020/3/22Browse.
  11. ^ Kumazawa, Taeko (April 2021, 4). “What is paper soap?15 Recommended Paper Soaps You Can Carry As a Corona Countermeasure”(Japanese). ELLE. 2022/5/26Browse.
  12. ^ "Showa nostalgia "Paper soap" Re-boom with Korona-ka! ??Annual sales from 35 yen to 370 million yen”(Japanese). Kobe Shimbun NEXT (September 2021, 11). 2022/5/26Browse.
  13. ^ ""Paper soap" re-focused on Korona-ka Some manufacturers have "100 times sales" due to increased hygiene awareness ... Originally for children, it became a candy store, etc.". FNN Prime Online. 2022/5/26Browse.
  14. ^ a b c d e f "Soap and detergent in daily life”. Japan Soap and Detergent Industry Association. 2019/10/17Browse.
  15. ^ History of soap detergentJapan Soap and Detergent Association
  16. ^ Syria Millennial Moisture | Middle East Demolition New Book - NHK
  17. ^ History of soap detergent
  18. ^ a b "Tidbit ~Blister about water around~”. TOTO. 2013/5/25Browse.
  19. ^ a b "Time slip Yokohama ――Negishi area ―――― Birthplace of soap factory ――". www.timeslip-y.jp. 2022/5/27Browse.
  20. ^ Changes in distribution in the soap industry: From the birth of the soap industry to the release of control Takarayama Kaichi August 2017, 8
  21. ^ Japan Soap and Detergent Association"Soap detergent knowledge"Partly modified
  22. ^ Kawahara, Takayoshi; Akiba, Isamu; Sakou, Megumi; Sakaguchi, Takemasa; Taniguchi, Hatsumi (2018-09-27). “Inactivation of human and avian influenza viruses by potassium oleate of natural soap components through exothermic interaction”. PLoS ONE 13 (9): e0204908. two:10.1371 / journal.pone.0204908. ISSN 1932 – 6203. https://doi.org/10.1371/journal.pone.0204908. 
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