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    PhEur. and NF  

NK Cholesterol is an almost odorless, white powder which is made by means of extraction and refining processes from lanolin alcohol.
NK Cholesterol has superior emulsifying and stabilizing properties to any other straight and branched chain lanolin alcohols.
NK Cholesterol NF is widely used as an emulsifying agent of w/o emulsions in cosmetic and pharmaceutical formulations such as creams, lotions, etc.
Furthermore, NK Cholesterols are used in various fields as an intermediate material for pharmaceuticals such as vitamin D3, steroid hormones, cholesteric liquid crystal (cholesteryl esters), etc.
NK Cholesterol BP grade (Feed grade) is used as an additive to the feed of larval and juvenile prawns in the artificial rearing to enhance their growth and survival.

Cholesterol is an optically active unsaturated monohydric waxy alcohol having an eight-carbon atom side chain which is completely saturated, a double bond at the 5th carbon and a hydroxyl group at 3rd carbon. It is these 3 characteristic features of the molecule which give it the properties it exhibits and, any alteration would lead to its differing p,hysiclogical behaviour.

The bulk of commercial cholesterol supply is prepared from the lanolin derivatives, lanolin alcohols which constitute the major portion of the unsaponifiable portion of the lanolin.

Cholesterol is applied Mainly in the fields of cosmetics, intermediate material to vitamin D3 and liquid crystal, and dietary ingredient for prawn cultivation.

Cholesterol possesses some hydrophilic properties and retains an optimum amount of water in emulsified form in the outer layer of the skin and skin lipids, this help in keeping the skin supple. A deficiency ofthis moisturing lipid results in excessive dehydration with consequent brittleness and superficial, cracking of the horny layer - a condition which is aggravated by adverse weather conditions. Apart from moisturing, cholesterol acids can also be used in modifying the occulusiveness of fatty and oil films.

There are studies indicating the necessity of cholesterol in diets for normal growth and survival of prawn. The prawn receiving the diet supplement with cholesterol grew normal, the survival rate and growth rate were 86 - 95% and 56 - 98% respectively. However the growth rate of prawn receiving the sterol free diet was poor (22 - 64%).

Many experiments reveal that, the requirement for cholesterol was about 0.5 to 1 .0%. The survival rates of prawn fed the diet containing other sterols (like ergosterol, stigmasterol, etc) as compared to the prawn fed the cholesterol diet, the growth rates of these sterols were inferior to cholesterol. This suggest that the effectiveness of cholesterol in improving the growth and the survival of prawn.

INCI: Cholesterol
Ein Produkt der   

Ingredients Ldt
conform to the NF 26
      Melting Point (oC)
Specific rotation
in 2% w/v in dioxane
Acidity (ml)
Loss on drying (%)
on ignition (%)
Purity (%)(GC)

-34 to -38
0.3 Max
0.3 Max

0.1 Max
95 Min

Datensammlung zu Wollwachsalkoholen
(.pdf-Datei, 270 kB) gemäß EG-Kosmetik-Richtlinien

Sicherheitsdatenblatt Cholesterol
(.pdf-Datei) nach REACH, Anhang II

  Submission Report RB 121978-34
      (.pdf-Datei, 5 kB)

  DEUTSCHE LANOLIN GESELLSCHAFT · Eichendorffstraße 37 · 60320 Frankfurt am Main · Telefon: +49 69 56 10 34 · dlg@parmentier.de