UL Prospector

Branched Kester BK-40

Koster Keunen, Inc. makes their documentation available in the regions indicated below:

Kester Wax BK-40 is a high molecular weight branched ester. BK-40 is hard and brittle with a low melt point. These attributes impart a creamy texture and help to improve skin moisture without adding greasiness like many butters. Kester Wax BK-40 mimics the textures of butters and hydrogenated chemistries without the oxidation and rancidity issues. Formulators will find it builds viscosity and improves esthetics in emulsions. BK-40 can be used in all cosmetic, skin and hair applications without limit.

Upgrade to Prospector Premium to view Compliance Highlights Learn More

Retailer Compliance Status

Name (CAS Number)
Octadecanoic acid, C32-36-branched alkyl esters (68201-22-9) Sign in to view

Regulatory & Advisory Status

Name (CAS Number)
Octadecanoic acid, C32-36-branched alkyl esters (68201-22-9)
Sign in to view
Compliance information powered by UL's LOLI Regulatory Database.


Koster Keunen, Inc. is a leading wax refining and processing company in the Personal Care and Cosmetics industry. They offer a full line of organic waxes and siliconyl waxes that create stronger and longer lasting formulations. Koster’s Kester waxes are perfect for gelling, improving skin feel, and moisturizing. Koster offers customizable wax blends to match equipment, temperature, and color requirements.

Company Documents

The information presented here was acquired by UL from the producer of the product or material or original information provider. However, UL assumes no responsibility or liability for the accuracy of the information contained on this website and strongly encourages that upon final product or material selection information is validated with the manufacturer. This website provides links to other websites owned by third parties. The content of such third party sites is not within our control, and we cannot and will not take responsibility for the information or content.


Chemical Class Categories
Functionality Categories

Where to Buy

Koster Keunen, Inc.

Are you a distributor who is interested in being listed here? Contact us!