Lanolin Derivative

PEG-30 Lanoline CMK

PEG-30 Lanoline CMK is a poly oxyethylene condensate with an average chain length of 30 ethylene oxide units. It has an average molecular weight of about 1.990 Da. The complex chemical composition of PEG-30 Lanoline CMK includes the natural lanolin esters and free hydroxyl groups, and the ether polymer chain. It is a soft, golden yellow wax with weak fruity odor.

Features

PEG-30 Lanoline CMK is a special product because it is completely soluble in water. The addition of ethylene oxide is kept to a minimum level, so as to keep the content of lanolin as a high as possible. Although it is completely water-soluble, concentrated solutions might show slight opalescence at room temperature. This insolubility is reversible upon cooling.

Applications

PEG-30 Lanoline CMK is a non-ionic detergent with manifold applications for emulsifying, solubilizing, moisturizing and cleaning without negative effects on the skin. It is used for hair setting and as plasticizer in shampoos, cleansing lotions, hand creams, detergent formulations and creams. It is also used for super fatting of soaps. The addition of cetyl alcohol or cetostearyl alcohol can increase both foam and stability of emulsion of products prepared with PEG-30 Lanoline CMK.

Dermatology

PEG-30 Lanoline CMK can be considered as an intermediate product between the pharmaceutical lanolin and PEG-75 lanolin. Both products have well-established use in cosmetic and pharmaceutical applications without any negative incidents on skin. PEG-30 Lanoline CMK has been used for more than 20 years and no harmful skin reactions during manufacturing and use have been observed.

Processing

When used in solutions, PEG-30 Lanoline CMK should first be melted, followed by addition of 3 times the amount of hot water under constant stirring. The resulting concentrate is then diluted with either hot or cold water. In order to prepare emulsions, PEG-30 Lanoline CMK is normally melted together with the oil phase, but it can also be dissolved in the aqueous phase. It should be stored cool in closed containers. Prolonged heating above 80 °C should be avoided.

Solubility at room temperature

Water: soluble; ethanol, anhydrous: not soluble; ethanol 80%: partly soluble; ethanol 40%: soluble; mineral oil: slightly soluble

PEG-75 Lanoline CMK

PEG-75 Lanoline CMK is a poly oxyethylene condensate with the best pharmaceutical lanolin. It has a mean chain length of 75 ethylene oxide units and an average molecular weight of about 3.970 Da. The lanolin content in PEG-75 Lanoline CMK is approximately 17%. It is a hard, pale yellow wax with weak fruity odor.

Features

PEG-75 Lanoline CMK is ethoxylated , to obtain not only complete water solubility, but also solutions that are crystal clear in all concentrations, both in water and in aqueous ethanol concentrations of up to 40%. The solutions are nonionic and compatible with most other solubilisers including up to 10% electrolytes solutions. The solution is only slightly affected by oxidative and reducing agents. It is stable in a pH range of 2-10. A particularly unique feature of PEG-75 Lanoline CMK is its carefully controlled manufacturing that ensures minimum viscosity variations of the aqueous solutions.

Applications

PEG-75 Lanoline CMK is particularly recommended for use in aqueous or aqueous-alcoholic lotions and solutions with high clarity. Moreover, the product has emulsifying, solubilising and emollient properties and a mild cleaning effect. Main applications include skin cleansing and after-shave lotions, as well as in shampoos and detergent formulations, where viscosity is of importance.

Dermatology

PEG-75 Lanoline CMK is made from pharmaceutical grade lanolin, which complies to the European Pharmacopoeia. It is well established in the market for many years, especially for hair and skin care products. To date, no adverse effects were observed. Patch tests that were made with the 100 % substance in 11 subjects with daily dosing of 2-3 hours over a period of 4 weeks showed no adverse skin reaction.

Processing

When used in solutions, PEG-75 Lanoline CMK should first be melted, followed by addition of 3 times the amount of hot water under constant stirring. The resulting concentrate is then diluted with either hot or cold water. In order to prepare emulsions, PEG-75 Lanoline CMK is normally melted together with the oil phase, but it can also be dissolved in the aqueous phase. It should be stored cool in closed containers. Prolonged heating above 80 °C should be avoided.

Solubility at room temperature

Water: soluble; ethanol, anhydrous: soluble; ethanol 80%: partly soluble; ethanol 40%: soluble; mineral oil: slightly soluble