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Chemical Name：Poly (4-hydroxy-2,2,6,6-tetramethyl-1-piperidine ethanol-alt-1,4-butanedioic acid)

Formula：H[C₁₅H₂₅O₄N]_nOCH₃ 

CAS NO. : 65447-77-0

Molecular Weight：＞2500

Specification:

 Appearance：White powder or granules

 Melting Range：50-70℃

Volatile Matter：≤0.5% 

Light Transmittance：425nm: ≥97%; 450nm: ≥98%

Ash Content：≤0.1%

Solubility：Soluble in acetone, toluene, xylene, ethyl acetate, ethanol, chloroform ;Slightly soluble in methanol;Insoluble in water.

Features and Application Area：622 is a high molecular HALS with low volatility, migration resistance, high temperature resistance etc, has synergetic effect with antioxidants and UV absorbers. 

HALS 622 is highly effective in PP, PE, EVA, PS, PA, PU, PVC, etc. 

Cautions：Avoid direct sunlight, moisture, high temperature.Testing required before use.

Pack & Store：25kg carton inner with plastic bag or as customer's requirement.