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Lauryl alcohol = 1-Dodecanol = Dodecyl alcohol
CAS Number: 112-53-8
EC Number: 203-982-0
Dodecanol or lauryl alcohol, is an organic compound produced industrially from palm kernel oil or coconut oil.
Lauryl alcohol is a fatty alcohol.
Sulfate esters of lauryl alcohol, especially sodium lauryl sulfate, are very widely used as
Sodium lauryl sulfate, ammonium lauryl sulfate, and sodium laureth sulfate are all used in shampoos.
Lauryl alcohol is tasteless and colorless with a floral odor.
1-Dodecanol belongs to a broad range of flavor and fragrance standards, used for the quality control of food and cosmetic products.
LAURYL ALCOHOL is identified as the main component in Etlingera elatior flower, widely used in traditional medicine and as a flavoring compound in food products, essential oils of Hypericum perforatum and Polygonum minus.
LAURYL ALCOHOL is the most studied C12 alcohol and finds extensive usage as a diluent/solvent/blender in low-cost perfumes, detergent fragrances, etc.
About this substance
Helpful information
Lauryl alcohol is registered under the REACH Regulation and is manufactured in and / or imported to the European Economic Area, at ≥ 100 000 to < 1 000 000 tonnes per annum.
Lauryl alcohol is used by consumers, in articles, by professional workers (widespread uses), in formulation or re-packing, at industrial sites and in manufacturing.
Consumer Uses
Lauryl alcohol is used in the following products: biocides (e.g. disinfectants, pest control products), washing & cleaning products, coating products, anti-freeze products, lubricants and greases, polishes and waxes, finger paints and plant protection products.
Lauryl alcohol release to the environment of this substance is likely to occur from: indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners) and outdoor use.
Article service life
Release to the environment of this substance can occur from industrial use: in processing aids at industrial sites, in the production of articles and industrial abrasion processing with low release rate (e.g. cutting of textile, cutting, machining or grinding of metal).
Lauryl alcohol release to the environment of this substance is likely to occur from: outdoor use, indoor use (e.g. machine wash liquids/detergents, automotive care products, paints and coating or adhesives, fragrances and air fresheners), outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials) and indoor use in long-life materials with low release rate (e.g. flooring, furniture, toys, construction materials, curtains, foot-wear, leather products, paper and cardboard products, electronic equipment).
Lauryl alcohol can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material) and plastic (e.g. food packaging and storage, toys, mobile phones).
Formulation or re-packing
Lauryl alcohol is used in the following products: pH regulators and water treatment products, laboratory chemicals, inks and toners, coating products, fillers, putties, plasters, modelling clay and finger paints.
Lauryl alcohol has an industrial use resulting in manufacture of another substance (use of intermediates).
Release to the environment of this substance can occur from industrial use: formulation of mixtures, formulation in materials and as an intermediate step in further manufacturing of another substance (use of intermediates).
Uses at industrial sites
Lauryl alcohol is used in the following products: fillers, putties, plasters, modelling clay, lubricants and greases, coating products, pH regulators and water treatment products, adhesives and sealants and non-metal-surface treatment products.
Lauryl alcohol is used in the following areas: building & construction work and mining.
Lauryl alcohol is used for the manufacture of: chemicals, machinery and vehicles and mineral products (e.g. plasters, cement).
Release to the environment of this substance can occur from industrial use: in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and of substances in closed systems with minimal release.
Lauryl alcohol release to the environment of this substance is likely to occur from: outdoor use.
Manufacture
Release to the environment of this substance can occur from industrial use: manufacturing of the substance, formulation of mixtures, formulation in materials, in processing aids at industrial sites, in the production of articles, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid, for thermoplastic manufacture, as processing aid and of substances in closed systems with minimal release.
1 General Discussion The production of fatty alcohols of this type range between 1000 and 10,000 tons per year in Denmark.
In 1993 the European production of Dodecanol was estimated as being max.
60,000 tons.
In the U.S.A. output of plasticizer type alcohols including Dodecanol was estimated at 110,000 tons in 1975. Domestic consumption of detergent alcohols in the U.S. in 1992 included about 24,000 tons as free alcohols.
1-Dodecanol is used primarily as a chemical intermediate for the production of n-Dodecyl sulfate salts, and in the manufacture of n-Dodecyl ethoxylates. It also finds use in synthetic detergents, lube additives, pharmaceuticals, cosmetics, rubber, textiles, perfumes, and as a flavouring agent.
According to the Danish products registry, the substance is found in 23 different products, including:
1. solvent in fillers/insulating materials for the building industry.
2. part of foaming/surface-active agents for cleaning purposes (including rinses for textiles).
3. as an ingredient in products used in
- agricultural industry
- foodstuff industry
- metal refining and processing industry
- public areas
- personal and household (including toiletry formulations for personal use.)
Use in the top 4 of these products exceeds two tons per year in Denmark.
Lauryl alcohol total volume of productsN registered as containing 1-dodecanol is approximately 225 tons.
Percentage content ranged from trace amounts to 100% .
In the U.S.A. approximately 20,000 lbs/year are used in fragrances, and some typical concentrations reported in personal care products include soaps (0.01 - 0.09%), detergents (0.002 - 0.018%), lotions and creams (0.005- 0.02%) and perfumes (0.09 - 0.25%).
1-Dodecanol has been reported in non-alcoholic beverages at 2.0 ppm, ice cream 1 ppm, candy 2.8 ppm, bakedgoods 1.7 ppm, chewing gum 16-27 ppm and syrups at 7.0 ppm. The substance has been identified in the saliva of male and female volunteers by GC-MS analysis (concentration not determined).
Lauryl alcohol has also been detected at concentrations of 5 ppm in sediments of the Niagara River Watershed (U.S.A.), identified in waste water from a poultry processing plant in Maryland, U.S.A. (concentration not given), in river water near Barcelona, Spain (concentration not given) and in industrial effluent discharged into the Illinois River, U.S.A. at concentrations of 24.5 ppm.
Signal word: Warning
Hazard statement: Harmful in contact with skin.
Causes skin irritation.
Causes eye irritation.
Precautionary statement:
Prevention Wash thoroughly after handling.
Wear protective gloves/protective clothing.
Response If on skin: Wash with plenty of water. Call a poison center/doctor if you feel unwell. Take off
contaminated clothing and wash before reuse.
If skin irritation occurs: Get medical
advice/attention.
If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
If eye irritation persists: Get medical
advice/attention.
Storage : Not available.
Disposal: Dispose of contents/container in accordance with local/regional/national/international regulations.
Hazard(s) not otherwise classified (HNOC): None known
Inhalation: Move to fresh air. Call a physician if symptoms develop or persist.
Rinse skin with water/shower. Take off contaminated clothing and wash before reuse. Get medical
attention if irritation develops and persists.
Skin contact: Rinse with water. Remove contact lenses, if present and easy to do. Continue rinsing. Get medical
attention if irritation develops and persists.
Eye contact: Ingestion Rinse mouth. If ingestion of a large amount does occur, call a poison control center immediately.
Most important: Irritant effects.
symptoms/effects, acute and delayed Indication of immediate
Provide general supportive measures and treat symptomatically.
medical attention and special treatment needed Remove from exposure. Remove contaminated clothing.
For treatment advice, seek guidance from an occupational health physician or other licensed health-care provider familiar with workplace
chemical exposures.
In the United States, the national poison control center phone number is
1-800-222-1222. If person is not breathing, give artificial respiration. If breathing is difficult, give oxygen if available. Persons developing serious hypersensitivity (anaphylactic) reactions must receive immediate medical attention.
General information
Product advantages:
high wetting capacity,low foaming capacity combined with the ability to regulate foaming, low freezing point, high detergency properties,low tendency to form gels in concentrated aqueous solutions,effective reduction of the contact angle.
Product applications:
industrial cleaning and washing, detergents for dishwashers, textiles, agrochemicals,cosmetic formulations.
1. Procedure
Lauryl alcohol central neck of a 5-l. three-necked round-bottomed flask is fitted with a stopper carrying a mercury-sealed mechanical stirrer.
One of the side necks is connected by means of a short piece of heavy rubber tubing to a large reflux condenser about 2 m. long, with an inner tube 2.5 cm. in diameter.
Lauryl alcohol The third neck is fitted with a separatory funnel.
In the flask are placed 70 g. (3 moles) of sodium and 200 cc. of dry toluene.
Lauryl alcohol flask is heated in an oil bath until the sodium is melted. The stirrer is then started; when the sodium is finely divided, the oil bath is removed and the mixture allowed to cool. Stirring must be continued during the cooling in order to keep the sodium finely divided.
When the mixture has cooled to about 60°, there are added from the separatory funnel, first, a solution of 114 g. (0.5 mole) of ethyl laurate in 150 cc. of absolute alcohol, then 500 cc. more of alcohol, as rapidly as is possible without loss of material through the condenser.
Lauryl alcohol time required for the addition of the ester solution and the alcohol is less than five minutes, usually two or three minutes.
When the reaction has subsided, the flask is heated on a steam bath until the sodium is completely dissolved .
The mixture is then steam-distilled to remove the toluene and ethyl alcohol.
Lauryl alcohol contents of the flask are transferred to a separatory funnel while still hot and washed three times with 200-cc. portions of hot water to remove the sodium laurate . The lauryl alcohol is extracted with ether from the cooled mixture and the washings.
Lauryl alcohol combined ether extracts are washed with water, sodium carbonate solution, and again with water, and dried over anhydrous magnesium sulfate.
Lauryl alcohol ether is evaporated and the lauryl alcohol distilled under diminished pressure. The yield is 60–70 g. (65–75 per cent of the theoretical amount) of a product boiling at 143–146°/18 mm. or 198–200°/135 mm.
LAURYL ALCOHOL is may be used to investigate the thermal properties of caprylic acid using differential scanning calorimetry.
LAURYL ALCOHOL may also be used as extraction solvent during determination of five kinds of polycyclic aromatic hydrocarbons in water samples, using dispersive liquid-liquid microextraction based on solidification of floating organic droplet method (DLLME-SFO).
Lauryl alcohol occurs naturally in apples and coriander.
Lauryl alcohol is one of the main volatile constituents of blue crabmeat processing byproduct.
Application
1-Dodecanol may be employed as an extraction reagent in the pipette vial dispersive liquid-liquid microextraction method coupled with HPCL studies.
General description
1-Dodecanol, a fatty alcohol, is a long chain aliphatic alcohol.
Solid-liquid phase diagrams of its binary mixtures with various other fatty alcohols (1-tetradecanol, 1-hexadecanol and 1-octadecanol) have been evaluated by employing high pressure microscopy and DSC (Differential scanning calorimetry).
LAURYL ALCOHOL undergoes oxidation in the presence of multiwall carbon nanotubes (MWCNTs) supported MoO3 (Mo/MWCNTs) and potassium containing Mo/MWCNTs (K/Mo/MWCNTs) catalysts to afford 1-dodecanal.
LAURYL ALCOHOL oxidation in the presence of Ru and Pt based carbon catalysts has been reported.
CAS Number: 112-53-8
Molecular Weight: 186.33
EC Number: 203-982-0
Beilstein Registry Number: 1738860
Linear Formula: CH3(CH2)11OH
Assay (GC, area%): ≥ 98.0 % (a/a)
Melting range (lower value): ≥ 22 °C
Melting range (upper value): ≤ 26 °C
Identity (IR): passes test
Due to its specific melting range the product may be solid, liquid, a solidified melt or a supercooled melt.
1-Dodecanol may be used in the synthesis of the following:
Monododecyl glyceryl ethers via etherification by reacting with glycerol in the presence of 10mol% of 1-bromododecane.
ω- and (ω-1)-Hydroxy derivatives via hydroxylation reaction catalyzed by frog liver microsomes.
Dodecanal via oxidation in the presence of sodium bromate and ruthenium catalyst.
LAURYL ALCOHOL may be used to extract polycyclic aromatic hydrocarbons (PAHs) from water samples via dispersive liquid-liquid microextraction technique.
Used to manufacture sulfuric acid esters (wetting agents) and in synthetic detergents, lube additives, pharmaceuticals, rubber, textiles, and perfumes; Also used as a flavoring agent and as a foam stabilizer for alcohol sulfate surfactants; [HSDB] Used to make surfactants for detergents, cleaning products, shampoos, cosmetics, lubricants, wetting agents, emulsifiers, dispersing agents, and antioxidants; Also used to make biocides and disinfectants; 1-Dodecanol is used in foam control, aluminum rolling, metalworking, and in the rubber, textiles, cosmetics, and perfume industries; Also used as a froth flotation agent and a flavoring ingredient in non-alcoholic beverages, ice cream, candy, baked goods, chewing gum, and syrups; [CHEMINFO] Used as Lepidoptera pheromone in apple and pear orchards; [EPA]
Appearance 25 deg C : Colourless liquid�
Hydroxyl Value : 132-137
HLB: 10.7
Acid Value : 1
Colour (APHA) : 20
Active : 100%
What is Lauryl alcohol?
Lauryl alcohol, also known as dodecanol, is an organic fatty alcohol.
Lauryl alcohol on a large-scale basis, it is produced from palm kernel oil or coconut oil.
Lauryl alcohol is a tasteless, colorless and floral odor.
Use & Benefits:
Lauryl alcohol is used vastly in the cosmetic industry in preparation of emulsion.
When it is used in emulsion it can stabilize emulsion by getting incorporated into water and oil phase.
Lauryl alcohol is fatty in nature, so when it is used on the skin, it also provides fat and moisture to the dried skin.
Lauryl alcohol forms a layer on the skin which does not allow moisture to evaporate.
So, when applied on the dried skin it gets a boost of moisture as well. It can also be used as a viscosity increasing agent.
Lauryl alcohol is used in skincare, haircare, and body care product.
Ethoxylated alcohol formulas such as Lauryl Alcohol are classified as surfactants, which means they reduce surface tension in a liquid, or between a liquid and a solid.
As with all types of ethoxylated alcohol, Lauryl Alcohol Ethoxylate is a nonionic compound — it has no electrical charge on the hydrophilic end and generally takes the form of a thick liquid that is often sticky to the touch.
Lauryl Alcohol ethoxylation process also tends to increase the water solubility of the material.
Products that typically contain Lauryl Alcohol Ethoxylate include cosmetics, laundry detergents, surface cleaners and personal care products, to name a few.
Acme-Hardesty offers an effective Lauryl Alcohol Ethoxylate product in 2-mole and 3-mole liquid formulations.
Lauryl Alcohol 2-mole formula features a hydroxyl value of 198-206 mg KOH/g, a maximum moisture content of .
10 percent and a pH ranging from 6.0 to 7.5. The 3-MOL version includes the same pH levels and moisture content, but it has a hydroxyl value of 171-180 mg KOH/g.Acme-Hardesty has been serving the oleochemical needs of companies throughout North America for more than 70 years.
Lauryl Alcohol close partnerships with many of the top oleochemical manufactures ensures you will receive an effective ethoxylated alcohol product at a competitive price.
Lauryl Alcohol Ethoxylate should be used with extreme caution.
Lauryl Alcohol is harmful if ingested and also poses a hazard to aquatic life.
Lauryl Alcohol is also likely to cause irritation when coming in contact with the eyes or skin.
Lauryl Alcohol should be stored in a closed container in an area with a temperature ranging from 30-40° C.
GENERAL DESCRIPTION AND APPLICATIONS
Fatty alcohols, derived from natural fats and oils, are high molecular straight chain primary alcohols.
They include lauryl (C12), MyrIstyl (C14), Cetyl ( or palmityl: C16), stearyl (C18), Oleyl (C18, unsaturated), and Linoleyl (C18, polyunsaturated) alcohols.
There are synthetic fatty alcohols equivalent physically and chemically to natural alcohols obtained from oleochemical sources such as coconut and palm kernel oil. Fatty alcohols are emulsifiers and emollients to make skin smoother and prevent moisture loss.
Identical fatty esters are used to improve rub-out of formulas and to control viscosity and dispersion characteristics in cosmetics, personal care products and pharmaceutical ingredients.
As chemical intermediates, the primary use of fatty alcohols are as raw material for the production of fatty sulfate salts and alcohol ethoxylates for foaming and cleaning purposes in the field of detergent industry.
Chemical reactions of primary alcohols include esterifications, ethoxylation, sulfation, oxidation and many other reactions.
Their derivatives and end use applications include;
Nonionic surfactants (Ethoxylates and propoxylates)
Anionic surfactants (Alkyl sulfates and alkyl ethoxy sulfates)
Chemical intermediates and polymerization modifiers (Alkyl halides, Alkyl mercaptans)
Quaternary ammonium compounds for detergent sanitisers, softner for textiles, phase transfer catalyst and biocides
Antioxidants for plastics (Alkyl thiopropionates and alkyl phosphites)
Lubricant additives (Metallic and thio alkylphosphates)
Flavor and Fragrance (Aldehydes and ketones)
PVC plasticizers (Dialkyl Phthalates, adipates and trimellitates)
Coatings and inks (acrylate and methacrylate esters)
Water treatment (acrylate and methacrylate esters)
Large amount of fatty alcohols are used as special solvents, fillers in plasticizer and insulating materials for the building industry.
Fatty alcohols are used as ingredients in the industries of agricultural, foodstuff, metal processing, cosmetics, lube additive, pharmaceutical, rubber, textile, perfume and flavouring as well as synthetic detergent.
USES & APPLICATIONS
Ethoxylated alcohol has multiple industrial uses and applications including:
CASE: Use Lauryl Alcohol Ethoxylate as a wetting agent to reduce the surface tension in liquids, and as an emulsifier in paints and coatings to promote dispersion.
Personal Care: Lauryl Alcohol Ethoxylate works extremely well as a foaming agent in personal care products such as shampoos and bath gels.
Soaps and Detergents: Lauryl Alcohol serves as a reliable wetting agent in a wide range of industrial and household cleaning products including detergents, laundry pre-spotters and hard surface cleaners.
Surfactants and Esters: You can use Lauryl Alcohol as a surfactant intermediate — it can also be sulfonated to make SLES (Sodium Lauryl Ether Sulfate), an anionic surfactant and detergent used in the manufacturing of many personal care products.
Textiles: Use Lauryl Alcohol Ethoxylate as a wetting agent in textile and leather processing applications to reduce surface tension.
Quality Level: 100
grade: reagent grade
vapor density: 7.4 (vs air)
vapor pressure: 0.1 mmHg ( 20 °C)
assay: 98%
form: solid or liquid
autoignition temp.: 500 °F
expl. lim.: 4 %
refractive index: n20/D 1.442 (lit.)
bp: 260-262 °C (lit.)
Lauryl Alcohol Ethoxylates are biodegradable nonionic surfactants composed of ethylene oxide adduct of Lauryl Alcohol.
Lauryl Alcohol Ethoxylates vary in physical appearance, from clear or slightly hazy, colorless liquids to white solids, depending upon the level of ethoxylation.
In general, with increase in the ethylene oxide chain attached to the Lauryl Alcohol hydrophobe increases the HLB value (water solubility), pour point, cloud point, density, viscosity, and flash point of the ethoxylate.
Description
Lauryl alcohol is organic tasteless, colourless solid with a floral smell.
Lauryl alcohol is classified as a fatty alcohol.
Lauryl alcohol is used to make surfactants, lubricating oils, pharmaceuticals, in the formation of monolithic polymers and as a flavor enhancing food additive,used as an emollient.
Lauryl alcohol is also the precursor to dodecanal, an important fragrance.
Lauryl alcohol can be obtained from palm kernel or coconut oil fatty acids and methyl esters by hydrogenation.
Lauryl alcohol ethoxylates have many uses, primarily as surfactants in detergent formulations both, industrial & domestic.
Lauryl alcohol also used as cleaning agents, scouring agents ,wetting agents & dispersants or emulsifiers in textile formulations.
LAEn grades are frequently used as thickeners for surfactant systems such as shampoos, shower gels and liquid soaps, as emulsifiers, solubilizers, fat dispersants and dissolving agents.
Lauryl alcohol ethoxylates can be used in a wide range of applications, including:
·Emulsifiers & Wetting agents.
·Industrial and institutional cleaners
·Agricultural chemicals
·Textile and leather processing
·Metalworking systems
Lauryl alcohol ethoxylates can also be used in ether sulfates and ether carboxylates, cosmetics as well as other industrial and agricultural applications.
Lauryl alcohol ethoxylates can be used to make phosphate esters, which are useful as dispersants, low-foam emulsifiers, and anti-static agents in the following applications:
·Agricultural chemicals
·Paints
·Polymer production
·Paper processing
·Textile processing
· Metalworking fluids
Application:
Lauryl Alcohol Ethoxylates can be used “as is” in a wide range of applications, including:
Emulsifiers & Wetting Agents.
Industrial and institutional cleaners
Agricultural chemicals
Textile and leather processing
Metalworking systems
Lauryl Alcohol Ethoxylates can also be used in ether sulfates and ether carboxylates, Cosmetics as well as other industrial and agricultural applications.
Production and use
In 1993, the European demand of dodecanol was around 60 thousand tons per year (Tt/a).
Lauryl alcohol can be obtained from palm kernel or coconut oil fatty acids and methyl esters by hydrogenation.
Lauryl alcohol may also be produced synthetically via the Ziegler process. A classic laboratory method involves Bouveault-Blanc reduction of ethyl laurate.
Dodecanol is used to make surfactants, lubricating oils, pharmaceuticals, in the formation of monolithic polymers and as a flavor enhancing food additive.
In cosmetics, dodecanol is used as an emollient. It is also the precursor to dodecanal, an important fragrance, and 1-bromododecane, an alkylating agent for improving the lipophilicity of organic molecules.
Lauryl alcohol ethoxylates are biodegradable nonionic surfactants composed of ethylene oxide adduct of lauryl alcohol.
Lauryl alcohol ethoxylates, clear to yellowish liquid to waxy solids depending on alkyl chain length and the number of ethoxy groups, are nonionic surfactants which contain both hydrophobic tail portion (fatty alcohol part) and hydrophilic polar head groups (ethoxy chain part), and are thus tend to dissolve in both aqueous and oil phase and to reduce the surface tension of liquids.
Ethylene oxide (also called epoxyethane and oxirane) is the simplest cyclic ether or epoxide, with the formula C2H4O; reactive material which is added to the base of alcohols (or amines) to form ethoxylated surfactants.
In general, with increase in the ethylene oxide chain attached to the lauryl alcohol hydrophobe increases the HLB value (water solubility), pour point, cloud point, density, viscosity, and flash point of the ethoxylate.
The Lauryl alcohol ethoxylates are designated by the name LAE followed by a number indicating the average number of ethylene oxide molecules added. LAE 2, LAE 3, LAE 5, LAE 7, LAE 8 are viscous liquids at room temperature.
LAE 10 is a white waxy solid.
Names
Preferred IUPAC name: Dodecan-1-ol
Other names: Dodecanol
1-Dodecanol
Dodecyl alcohol
Lauryl alcohol
Identifiers
CAS Number : 112-53-8 check
3D model (JSmol) : Interactive image
ChEBI : CHEBI:28878 check
ChEMBL : ChEMBL24722 check
ChemSpider : 7901 check
DrugBank : DB06894 check
KEGG : C02277 check
PubChem CID : 8193
UNII : 178A96NLP2 check
CompTox Dashboard (EPA)
Properties
Chemical formula: C12H26O
Molar mass: 186.34
Appearance :Colorless solid
Density: 0.8309
Melting point :24 °C (75 °F; 297 K)
Boiling point :259 °C (498 °F; 532 K)
Solubility in water :0.004 g/L[2]
Magnetic susceptibility : -147.70·10−6 cm3/mol
Related compounds
Related :
Dodecanal
Dodecanoic acid
1-Bromododecane
Dodecan-1-ol is a fatty alcohol that is dodecane in which a hydrogen from one of the methyl groups is replaced by a hydroxy group.
1-Dodecanol is registered for use in apple and pear orchards as a Lepidopteran pheromone/sex attractant, used to disrupt the mating behaviour of certain moths whose larvae destroy crops.
1-Dodecanol has a role as a cosmetic, a pheromone, an insect attractant, a pesticide and a plant metabolite.
1-Dodecanol is a primary alcohol, a fatty alcohol and a member of dodecanols.
Synonyms: ALCOHOL C-12
Chemical Names: 1-DODECANOL
JECFA number: 109
COE number: 56
FEMA number: 2617
Functional Class:
Flavouring Agent
FLAVOURING_AGENT
Lauryl alcohol are amphiphiles, with part of the molecule lipophilic (fatty hydrocarbon region) and part hydrophilic (ether region).
This dual nature imparts these ingredients with most of their physical properties: increased ethoxylation (increased n value) increases hydrophilicity and esterification increases lipophilicity.
Laureths with low n values are water insoluble and oil soluble as a result of the relatively long nonpolar and short polar regions of the molecule.
Laureth-4 forms a stable milky dispersion in water.
Laureth-23 forms a clear aqueous Laureths with low n values are colorless liquid.
As the n value increases, the viscosity of the ingredient increases until they become white, waxy solids.
Lauryl alcohol are nonionic surfactants with a hydrophile-lipophile balance (HLB) range of 5-18 depending on the n value.
An HLB rating below 10 places the ingredient on the lipophilic part of the scale; a rating of 10 to 20 places it in the hydrophilic range.
The two ingredients in this report, Laureths -4 and -23,
have mean values can be grouped according to their usefulness to the cosmetics industry (Table l).(4) Laureth-4 is used as an OlW emulsifier; Laureth-23 can serve as either an OIW emulsifier or a solubilizer.
Blends of two surfactants (A,B) can be used to attain an HLB that fits a particular use.
Lauryl alcohol can be determined mathematically according to the formula:
HLBdesired= Percent A HLBA + percent B HLBB.
If, for example, one wished to mix Laureths -4 and -23 to obtain a specific physical property, the above equation could be used to generate a chart as shown in Table 2. Whereas neither Laureth-4 nor Laureth-23 alone fits within the HLB-detergent range in Table 1, a blend of 40% Laureth-4 and 60% Laureth-23
meets this requirement.
Lauryl alcohol , pure Laureths or blends of them can be used to obtain surfactant-related properties desirable in cosmetic chemistry.
Abstract
By using a semi-efficient vulcanisation system; the effects of the lauryl alcohol (LA) addition as a new rubber additive on cure characteristics and tensile properties of silica-filled natural rubber (NR) composites were investigated.
The NR composite was filled with silica filler with a fixed loading, 30.0 phr.
1-Dodecanol is a fatty alcohol based on palm kernel oil and added into the silica-filled NR composites.
1-Dodecanolloadings were 1.0, 2.0, 3.0 and 4.0 phr.
1-Dodecanol was found that 1-Dodecanol functioned as a co-curing (curative) and internal plasticiser.
As a co-curing agent, 1-Dodecanol increased the crosslink density and tensile strength up to 3.0 phr of loading.
As an internal plasticiser, 1-Dodecanol decreased the modulus tensile and increased elongations at break of silica-filled NR composites.
1-Dodecanol 3.0 phr of 1-Dodecanol was the optimum loading.
Synonyms
1-DODECANOL
Dodecan-1-ol
Dodecanol
Lauryl alcohol
Dodecyl alcohol
112-53-8
n-Dodecyl alcohol
Undecyl carbinol
Dodecylalcohol
Lauric alcohol
Laurinic alcohol
1-Dodecyl alcohol
Pisol
n-Dodecan-1-ol
Duodecyl alcohol
1-Hydroxydodecane
Siponol L5
Karukoru 20
Lauroyl alcohol
Siponol 25
Lorol 5
Lorol 7
n-Dodecanol
Lauryl 24
Alcohol C-12
Alfol 12
Lorol 11
Sipol L12
Dytol J-68
Siponol L2
Cachalot L-50
Cachalot L-90
Dodecyl alcoho
Alcohols, C8-18
n-Lauryl alcohol
C12 alcohol
Hainol 12SS
Hydroxydodecane
Conol 20P
Conol 20PP
Lorol
EPAL 12
Adol 10
Adol 12
Dodecanol-1
