2-(2'-hydroxy-3',5'-di-t-butyl-phenyl)benzotriazole CAS NO.3846-71-7

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Chemical Name		2-(2'-hydroxy-3',5'-di-t-butyl-phenyl)benzotriazole
Formula		C₂₀H₂₅N_3O
Structure
CAS NO.		3846-71-7
Molecular Weight		323.4
Specifications	Appreance	Yellowish crystalline powder
	Purity	≥99%(HPLC)
	Melting Point	152-156 ℃
	Ash	≤0.1%
	Loss On Drying	≤0.3%
	Transmittance	460 nm≥97% 500 nm≥98%
Advantage and Application		UV-320 is a high-efficient light stabilizer, which has strong ultraviolet absorbing ability and low volatility characteristics. UV-320 protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets and fibers during outdoor weathering. It is suitable for PVC, unsaturated polyester and other polymers.
Recommended dosage		PVC	unsaturated polyester	Polyester
		0.25-0.5 %	0.2-0.4%	0.3-0.5%
Package		20/25KG cartons or drums

Chemical Name		2-(2'-hydroxy-3',5'-di-t-butyl-phenyl)benzotriazole
Formula		C₂₀H₂₅N_3O
Structure
CAS NO.		3846-71-7
Molecular Weight		323.4
Specifications	Appreance	Yellowish crystalline powder
	Purity	≥99%(HPLC)
	Melting Point	152-156 ℃
	Ash	≤0.1%
	Loss On Drying	≤0.3%
	Transmittance	460 nm≥97% 500 nm≥98%
Advantage and Application		UV-320 is a high-efficient light stabilizer, which has strong ultraviolet absorbing ability and low volatility characteristics. UV-320 protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of molded articles, films, sheets and fibers during outdoor weathering. It is suitable for PVC, unsaturated polyester and other polymers.
Recommended dosage		PVC	unsaturated polyester	Polyester
		0.25-0.5 %	0.2-0.4%	0.3-0.5%
Package		20/25KG cartons or drums