UV-328 UV absorber CAS No. 25973-55-1

• CAS No.: 25973-55-1
• Formula: C22H29N3O
• Certification: REACH
• Environmental Protection: Yes
• Color: Yellow
• Kind: UV absorber
• Model NO.: 328
• Appearance: Powder
• Transport Package: 20kg carton
• Specification: purity 99% min
• Trademark: LEPUZ
• Origin: China
• Production Capacity: 2000mt/Year

Product Description

LeSorb^® UV-328

Benzotriazole UV Absorber

 

Chemical Name		2-(2'-Hydroxy-3', 5'-di-tert-amylphenyl) benzotriazole
Formula		C22H29N3O
Structure
CAS NO.		25973-55-1
Molecular Weight		351.5
Specifications	Appreance	Yellowish powder or cylindrical granule
	Purity	≥99%(HPLC)
	Melting Point	79-87 ^oC
	Ash	≤0.1%
	Loss On Drying	≤0.5%
	Transmittance	460nm≥96%   500nm≥97%
Advantage and Application		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. This product is suitable for polyolefin (especially PE), polyester, styrene polymers, polyamide, PC, elastomers, epoxy, 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%
Package		20KG cartons or drum

 

Application

 

Main products
 

Optical brighteners: OB    OB-1   OB-3   KCB    FP-127    KSN    MDAC(SWN)    CBS-X

UV absorbers: UV-531    UV-9(BP-3)    UV-P    UV-326    UV-327    UV-328    UV-329   
                         UV-1130   UV-284(BP-4) 

Light stabilizers: 622    770    944    292    783    695

 

Our Services

We have exact inventory plans to guarantee stable supply.

We have many years' experience of chemical logistics and dangerous chemical managers with specially trained, which ensure the safety and right of chemicals, timely logistics.

Our laboratory takes strictly testing on every lot of goods according to customers' requirement. Meanwhile we has good relationship with the third party company SGS.

After-sales service is the important part in our service. If there are quality problems, we will actively cooperate with the customers and solve the problems early.

We expect to become good partners with our customers for long.





Company Information 

NANJING LEPUZ CHEMICAL CO., LTD. is an ISO-certified modernized chemical enterprise concentrating on the production, sales and service for pesticide, plastic and coating additives, fine chemicals and intermediates.  
Our products are widely used in agriculture, plastic and rubber industry, medical industry, paints, printing inks and etc.  
 
Our company's headquarters is based in Nanjing city, Jiangsu Province, China.  
Our factory is located in Touqiao Town, Hanjiang District, Yangzhou City, where is adjacent to Guangling Hi-tech Development Zone, mainly producing high quality plastic additives and intermediates such as optical brighteners and etc.

We have established long years' technical cooperation with Nanjing University, Nanjing Tech University, and make continuous innovation to fulfill the changing market's demand and trends.  

Besides the professional R&D team, our factory has advanced production and testing equipments, which can be used for testing and reprocessing to ensure the high quality and meet customers' different requirement. 

With profound chemistry knowledge and rich experience, our business team can offer professional customized technical supports and solution for customer's demand.

Till now our products have occupied a good market in China, and also exported to Europe, the United States, Japan and South Korea, Southeast Asia, the Middle East, Central and South America, Africa and etc.  

Welcome to contact us. Hope we can have a good cooperation and bright future.