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Lanolin (Wool fat) is a secretion from sheep’s skin.
Lanolin (Wool fat) particularly on your nose.
Unlike sebum, Lanolin (Wool fat) contains no triglycerides.
CAS: 8006-54-0
MF: N/A
EINECS: 232-348-6
Synonyms
WOOL FAT;ADEPS LANAE;BASE, LANOLIN OINTMENT, HYDRATED, HYDROPHILIC;BASE, LANOLIN OIL AND CARBAMIDE OINTMENT, HYDRATED, HYDROPHILIC;HYPOALLERGENIC LANOLIN;LANOLIN DEHYDRATE;LANOLIN OIL;LANOLIN HYDROUS
Lanolin (Wool fat) is sometimes referred to as “wool fat,” but the term is misleading because it lacks triglycerides needed to be considered a fat.
The purpose of Lanolin (Wool fat) is to condition and protect sheep’s wool.
This conditioning property is why the substance is now widely used in human cosmetics, skin care, and hair products.
Lanolin (Wool fat) is extracted by putting sheep’s wool through a centrifuge machine that separates the oil from other chemicals and debris.
The process is performed after the sheep is sheared so the extraction of lanolin causes no harm to sheep.
Lanolin (Wool fat) is a very good ingredient for someone with dry skin, though it can be a problem for someone with oily or breakout-prone skin.
Also, as an animal-derived ingredient, Lanolin (Wool fat) is sometimes viewed as less favorable in comparison to synthetic or plant-derived alternatives.
A yellowish viscous substance obtained from wool fat.
Lanolin (Wool fat) contains cholesterol and terpene compounds, and is used in cosmetics, in ointments, and in treating leather.
An emulsion of purified wool fat in water, containing cholesteroland certain terpene alcoholsand esters.
Lanolin (Wool fat) is used in cosmetics.
Lanolin (Wool fat), also called wool fat, wool yolk, wool wax, sheep grease, sheep yolk, or wool grease, is a wax secreted by the sebaceous glands of wool-bearing animals.
Lanolin (Wool fat) used by humans comes from domestic sheep breeds that are raised specifically for their wool.
Historically, many pharmacopoeias have referred to Lanolin (Wool fat) as wool fat (adeps lanae); however, as lanolin lacks glycerides (glycerol esters), it is not a true fat.
Lanolin (Wool fat) primarily consists of sterol esters instead.
Lanolin (Wool fat)'s waterproofing property aids sheep in shedding water from their coats.
Certain breeds of sheep produce large amounts of lanolin.
Lanolin (Wool fat)'s role in nature is to protect wool and skin from climate and the environment; it also plays a role in skin (integumental) hygiene.
Lanolin (Wool fat) and its derivatives are used in the protection, treatment, and beautification of human skin.
Lanolin (Wool fat) is light yellow or brown yellow ointment; Viscous and smooth; Weak and specific odor.
Soluble in chloroform or ether, soluble in hot ethanol, insoluble in water, but can be mixed with about 2 times the amount of water.
The melting point is 36~42 C, the acid value is not more than 1.5, the saponification value is 92~106 (determination of heating reflux time is 2H) iodine value is 18~35.
Lanolin (Wool fat) is a medicinal matrix extracted from wool washing effluent, which contains about 94% Ester, 1% free alcohol, 1% free fatty acid and 1% saccharide.
The goods on the skin permeability, suitable for play a role in the dermis.
Since the chemical composition of Lanolin (Wool fat) is close to the stratum corneum components of human skin and hair in some aspects, especially containing cholesterol compounds with up to 40% hydrophilicity, it can soften and moisturize skin and hair.
Lanolin (Wool fat) texture is too thick, should not be used alone, need to be combined with Vaseline.
Lanolin (Wool fat) containing 30% moisture is called hydrous lanolin, and its viscosity is low, which is convenient for application.
Lanolin (Wool fat) Chemical Properties
Melting point: 38-40 °C
Density: 0.932-0.945 g/cm3(Temp: 15 °C)
Fp: 209 °C
Storage temp.: Sealed in dry,Room Temperatur
Solubility: chloroform: 0.1 g/mL, clear to faintly turbid (<29 NTU), strongly yellow-green
Form: Adhering Crystals or Powder
Color: White to yellow
Odor: Characteristic
Water Solubility: Soluble in ether, petroleum ether, chloroform and petroleum benzene. Sparingly: soluble in ethanol. Insoluble in water.
Merck: 14,5358
Dielectric constant: 4.2（Ambient）
EPA Substance Registry System: Lanolin (Wool fat) (8006-54-0)
Lanolin (Wool fat) is a pale yellow-colored, unctuous, waxy substance with a faint, characteristic odor.
Melted Lanolin (Wool fat) is a clear or almost clear, yellow liquid.
Lanolin (Wool fat) is a waxy substance that sheep naturally produce to protect their wool.
Because Lanolin (Wool fat)'s properties are similar to those of the sebum (oil) secreted by human skin, it is a popular ingredient in moisturizers, hair care products, and soaps.
Lanolin (Wool fat) is a secreted oil that attaches to the wool.
There are two types of lanolin refined products, namely, anhydrous lanolin and hydrated lanolin.
Lanolin (Wool fat) anhydrous light yellow or brown yellow ointment; Viscous and smooth; Odor weak and specific.
Lanolin (Wool fat) is soluble in chloroform or ether, soluble in hot ethanol, very slightly soluble in ethanol, insoluble in water; But Lanolin (Wool fat) can be mixed with about 2 times the amount of water, and has excellent emulsifying properties.
Lanolin (Wool fat) is not saponified in caustic, but can be saponified by pressure and heating in an ethanolic solution of caustic.
Strong hygroscopicity.
Mp36-42 ° C., the acid value is not more than 1.5, the saponification value is 92-106 (the heating reflux time is 2H in the measurement), and the iodine value is 18-35 (the time of standing in the dark is 4H in the measurement).
Lanolin (Wool fat) is a pale yellow or off-white ointment containing 25%-35% water which is obtained by mixing the melted lanolin with distilled water.
Soluble in ether, chloroform; Insoluble in water.
Composition
A typical high-purity grade of Lanolin (Wool fat) is composed predominantly of long chain waxy esters (approximately 97% by weight) with the remainder being lanolin alcohols, lanolin acids and lanolin hydrocarbons.
An estimated 8,000 to 20,000 different types of Lanolin (Wool fat) esters are present in lanolin, resulting from combinations between the 200 or so different lanolin acids and the 100 or so different lanolin alcohols identified so far.
Lanolin (Wool fat)’s complex composition of long-chain esters, hydroxyesters, diesters, lanolin alcohols, and lanolin acids means in addition to its being a valuable product in its own right, Lanolin (Wool fat) is also the starting point for the production of a whole spectrum of lanolin derivatives, which possess wide-ranging chemical and physical properties.
The main derivatisation routes include hydrolysis, fractional solvent crystallisation, esterification, hydrogenation, alkoxylation and quaternisation.
Lanolin (Wool fat) derivatives obtained from these processes are used widely in both high-value cosmetics and skin treatment products.
Uses
Lanolin (Wool fat) is an emollient with moisturizing properties and an emulsifier with high water–absorption capabilities.
Lanolin (Wool fat) forms a network on the skin’s surface rather than a film, as is the case with petrolatum (Vaseline.).
While long-term studies associate a low incidence of allergic reactions to Lanolin (Wool fat), it remains a controversial ingredient based on a potential pesticide content and potential comedogenicity.
There is a move among high-quality Lanolin (Wool fat) manufacturers to produce low-pesticide Lanolin (Wool fat) and among high-quality cosmetic formulators and manufacturers to use the purist form available.
Lanolin (Wool fat)’s comedogenicity potential is increasingly debated as some researchers believe it to be inaccurate, especially when lanolin is used in an emulsion.
Lanolin (Wool fat) is a sheep’s wool derivative formed by a fat-like viscous secretion of the sheep’s sebaceous glands.
Some consider Lanolin (Wool fat) a natural wax.
Lanolin (Wool fat) is an emollient with moisturizing properties and an emulsifier with high water–absorption capabilities.
Lanolin (Wool fat) forms a network on the skin’s surface rather than a film, as is the case with petrolatum (Vaseline.).
While long-term studies associate a low incidence of allergic reactions to Lanolin (Wool fat), it remains a controversial ingredient based on a potential pesticide content and potential comedogenicity.
There is a move among high-quality Lanolin (Wool fat) manufacturers to produce low-pesticide lanolin and among high-quality cosmetic formulators and manufacturers to use the purist form available.
Lanolin (Wool fat)’s comedogenicity potential is increasingly debated as some researchers believe it to be inaccurate, especially when lanolin is used in an emulsion.
Lanolin (Wool fat) is a sheep’s wool derivative formed by a fat-like viscous secretion of the sheep’s sebaceous glands. Some consider it a natural wax.
Lanolin (Wool fat) is a lanolin derivative.
Lanolin (Wool fat) wax is a lanolin derivative.
This is the semisolid fraction of Lanolin (Wool fat) obtained by physical means from whole lanolin.
Lanolin (Wool fat) and its many derivatives are used extensively in both the personal care (e.g., high value cosmetics, facial cosmetics, lip products) and health care sectors such as topical liniments.
Lanolin (Wool fat) is also found in lubricants, rust-preventive coatings, shoe polish, and other commercial products.
Lanolin (Wool fat) is a relatively common allergen and is often misunderstood as a wool allergy.
However, allergy to a lanolin-containing product is difficult to pinpoint and often other products containing Lanolin (Wool fat) may be fine for use.
Patch testing can be done if a lanolin allergy is suspected.
Lanolin (Wool fat) is frequently used in protective baby skin treatment and for sore nipples from breastfeeding but health authorities recommend alternative methods first, including nipple cleaning and improving baby positioning as well as expressing milk by hand.
Lanolin (Wool fat) is reported to have soothing properties but the lack of research leads to the previous recommendations being primary.
Lanolin (Wool fat) is used commercially in many industrial products ranging from rustproof coatings to lubricants.
Some sailors use Lanolin (Wool fat) to create slippery surfaces on their propellers and stern gear to which barnacles cannot adhere.
Commercial products (e.g. Lanocote) containing up to 85% lanolin are used to prevent corrosion in marine fasteners, especially when two different metals are in contact with each other and saltwater.
The water-repellent properties make Lanolin (Wool fat) valuable in many applications as a lubricant grease where corrosion would otherwise be a problem.
7-Dehydrocholesterol from Lanolin (Wool fat) is used as a raw material for producing vitamin D3 by irradiation with ultraviolet light.
Baseball players often use Lanolin (Wool fat) to soften and break in their baseball gloves (shaving cream with lanolin is popularly used for this).
Anhydrous liquid Lanolin (Wool fat), combined with parabens, has been used in trials as artificial tears to treat dry eye.
Lanolin (Wool fat) is also used as a lubricant for brass instrument tuning slides.
Lanolin (Wool fat) can also be restored to woollen garments to make them water and dirt repellent, such as for cloth diaper covers.
Lanolin (Wool fat) is also used in lip balm products such as Carmex.
For some people, Lanolin (Wool fat) can irritate the lips.
Lanolin (Wool fat) is sometimes used by people on continuous positive airway pressure therapy to reduce irritation with masks, particular nasal pillow masks that can often create sore spots in the nostrils.
Lanolin (Wool fat) is a popular additive to moustache wax, particularly 'extra-firm' varieties.
Lanolin (Wool fat) is used as a primary lubricating component in aerosol-based brass lubricants in the ammunition reloading process.
Mixed warm 1:12 with highly concentrated ethanol (usually 99%), the ethanol acts as a carrier which evaporates quickly after application, leaving a fine film of Lanolin (Wool fat) behind to prevent brass seizing in resizing dies.
Lanolin (Wool fat), when mixed with ingredients such as neatsfoot oil, beeswax and glycerol, is used in various leather treatments, for example in some saddle soaps and in leather care products.
Pharmaceutical Applications
Lanolin (Wool fat) is widely used in topical pharmaceutical formulations and cosmetics.
Lanolin (Wool fat) may be used as a hydrophobic vehicle and in the preparation of water-in-oil creams and ointments.
When mixed with suitable vegetable oils or with soft paraffin, Lanolin (Wool fat) produces emollient creams that penetrate the skin and hence facilitate the absorption of drugs.
Lanolin (Wool fat) mixes with about twice its own weight of water, without separation, to produce stable emulsions that do not readily become rancid on storage.
Production Methods
Lanolin (Wool fat) is a naturally occurring wax-like material obtained from the wool of sheep, Ovis aries Linne′.
Crude Lanolin (Wool fat) is saponified with a weak alkali and the resultant saponified fat emulsion is centrifuged to remove the aqueous phase.
The aqueous phase contains a soap solution from which, on standing, a layer of partially purified lanolin separates.
Lanolin (Wool fat) is then further refined by treatment with calcium chloride, followed by fusion with unslaked lime to dehydrate the lanolin.
Lanolin (Wool fat) is finally extracted with acetone and the solvent is removed by distillation.
Production
Crude Lanolin (Wool fat) constitutes about 5–25% of the weight of freshly shorn wool.
The wool from one Merino sheep will produce about 250–300 ml of recoverable wool grease.
Lanolin (Wool fat) is extracted by washing the wool in hot water with a special wool scouring detergent to remove dirt, wool grease (crude lanolin), suint (sweat salts), and anything else stuck to the wool.
The wool grease is continuously removed during this washing process by centrifuge separators, which concentrate Lanolin (Wool fat) into a waxlike substance melting at approximately 38 °C (100 °F).
Side effects
Most emollients can be used safely and effectively without side effects.
However, burning, stinging, redness or irritation may occur.
Rare and very serious allergic reactions are abnormal changes in the skin (e.g., whitening/softening/wetness from over-moisturisation), rashes, itching/swelling (especially on the face/tongue/throat), severe dizziness, and difficulty breathing.
If any discomfort occurs, contact your doctor immediately.
