Light Stabilizer 508 (HS-508/292)

Product Name	Hindered Amine Light Stabilizer HS-508 (292)
Chemical Name	A mixture of bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate and 1-(methyl)-8-(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate
English Name	The active substance is a mixture of: bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate and 1-(methyl)-8-(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate
CAS NO.	41556-26-7 82919-37-7
Molecular Formula	C₃₀H₅₆N₂O₄ C₂₁H₃₉NO₄
Chemical Structure
Main Uses	Hindered amine light stabilizer. Mainly used in coatings, inks, polyurethane paints, etc. It effectively prevents coatings from cracking and surface delamination under sunlight exposure, and performs even better in automotive-specific coatings. It has a synergistic effect with benzotriazole-type UV absorbers.
Storage	This product is hygroscopic and must be stored sealed, dry, and protected from light.
Packaging	20 kg fiber drum with inner plastic bag.

Last Updated: 2014-03-13

Certifications

National High-Tech Enterprise
Vice Chairman Unit, China Plastics Processing Industry Association (CPPIA)
Vice Chairman Unit, Agricultural Plastics Branch, China Agricultural Plastics Application Technology Society
Member, Ageing Methods Subcommittee, National Technical Committee on Plastics (SAC/TC15/CS5)
Member, Society of the Plastics Industry (SPI), USA