UV Absorber UV Light Stabilizer UV-328 for Polyolefin Plastics

• CAS No.: 25973-55-1
• Formula: C22h29n3o
• EINECS: 247-384-8
• Environmental Protection: Yes
• Color: Light Yellow
• Kind: UV Absorber
• Model NO.: UV-328
• Appearance: Powder
• Transport Package: 25kg
• Specification: 99.9
• Trademark: WSD
• Origin: China
• HS Code: 2914399090
• Production Capacity: 500 Mt a Month

Product Description

UV Absorber 328

Product Description

Chemical Name:2-(2'-Hydroxy-3', 5'-di-tert-amylphenyl) benzotriazole Formula:C22H29N3O

CAS NO.:25793-55-5
Molecular Weight:351.5

Technical index

 

Appreance	Yellowish powder or cylindrical granule
Purity	≥99%(HPLC)
Melting Point,ºC	79-87
Ash	≤0.1%
Loss On Drying	≤0.5%
Transmittance	460 nm≥96% 500 nm≥97%

 

Our Advantages

 

This product is a high efficient UV absorber, which can effectively absorb 270-340 nm UV light. The light stability is similar to UV-326 and UV-327, but this product has good dissolubility with the resins. Its heat volatility is low and its durability to washing is very good.
Application
This product is suitable for polyolefin (especially PE), polyester, styrene polymers, polyamide, PMMA, PC, elastomers,PVC etc.

Recommended dosage

PS	PE	Polyester	PVC	PC
0.2-0.5%	0.2-0.4 %	0.3-0.5%	0.2-0.5 %	0.15-0.3%

 

Packaging & Shipping

 

 20kg/drum