uv-531-Chimasorb 81, Lowilite 22 supplier info@www.additivesforpolymer.com

UV 531, Chimassorb 81, CAS 1843-05-6

Chemical Name:


Formula C21H26O3  
Molecular Weight      326
CAS# 1843-05-6


Appearance slightly yellow powder
Melting point 47-49℃
boiling point > 300°C
Solubility(20℃) Water < 0.01
MeoH 2
EtoH 2
Acetone 70
Ch2Cl2 67
Hexane 25


>Features: Low yellowing; Good absorbance in the UV-B region; improves failure of coatings resulting from exposure to sunlight including discoloration, cracking and loss of adhesion.

>531 is a UV absorber for plasticized and rigid PVC, polyester, PS, Acrylate resins, vinyl ester based coatings, PU based coatings, alkyed resin coatings, improves the weather resistance of the coating.

>Its performance in outdoor applications can be improved further by use in synergistic combination with a hindered amine light stabilizer (HALS) such as HALS 292.

>The amount of UV 531 required for optimum performance should be determined in trials covering a concentration range.

Handing and Safety: 

>FDA approves, under the 21CFR178.2010 for use in aqueous foods, dairy products (water-in-oil emulsions), bakery products without oil, and dry foods without oil at a maximum concentration of 0.5%.

>For additional handing and toxicological information, please consult us for Maternal Safety Date Sheet.


25kg per fiber drum, 9*3 layer 27drum per pallet,or according to customers’ requirements.


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