Excellent Ultraviolet Absorber CAS No. 5973-55-1; UV328

• CAS No.: 5973-55-1
• Kind: UV Absorbe
• Appearance: Powder
• Purity: 99.0% Min
• Melting Point: 81.0 Temperature Min
• Volatiles: 0.50% Max
• Model NO.: UV Absorbe
• Transmittance 460nm: 98.0% Min
• Transmittance 500nm: 99.0% Min
• Ash: 0.05% Max
• Transport Package: in 20kgs Net Carton
• Trademark: SWE
• Origin: China
• Production Capacity: 20mts/Month

Product Description

Product Name  UV 328

Identification
Synonyms 2-(2'-Hydroxy-3',5'-di-tert-pentylphenyl)-benzotriazole
Molecular Formula C22H29N3O
Molecular Weight  351.49
CAS Number  25973-55-1
EINECS/ELINCS 247-384-8

 

Properties
Appearance  :   light yellowish powder
Melting Range:  80-83 °C
Specific Gravity :  1.17g/cm³ at 20 ºC
Solubility :  insoluble in water; soluble in acid, benzene, toluene, ethyl acetate and petroleum ether, slightly soluble in ethyl alcohol and methyl alcohol
Stability :stable under ordinary conditions
 

Item	Specification
Appearance	light yellowish powder
Purity	99.0% min
Melting point	81.0ºC min
Volatiles	0.50% max
Ash	0.05% max
Transmittance 460nm	98.0% min
Transmittance 500nm	99.0% min

Packing and Storage
Packing    In 20kgs net carton
Storage    Keep tightly closed and store in cool and dry place
 
Safety Information
Non-hazardous for air, sea and road freight.

Excellent ultraviolet absorber. UV  max: 345nm. Good solubility for polymer and little volatility. Mainly used for PE, PP,PS,PVC, poly ester and ABS resins, etc.

Frequently Asked Questions
Q1: May I get one sample before placing order? 

Re: Yes, Sample are available. For normal products, samples are for free and you just need to bear the freight; 

For those high value products, you just need to freight and certain product cost. When we both cooperate for 

some times or when you are our VIP customer, free sample will be offered when you need.

Q2: Which payment is available for your company?
Re: T/T, L/C. You can choose the one which is convenient for you. 

Q3: How and when can I get my goods after payment?
Re: For small quantity products, they will be delivered to you by international courier(DHL, FedEx, TNT etc.) 

or by air. Usually it will cost 3-5days that you can get the goods after delivery.For large quantity products,

shipping by see is worthwhile.It will cost days to weeks to come to your destination port, which depends on 

where the port is.

Q4: Is there any possible to use my appointed label or package?
Re: Yes. If needed, we'd like to use label or package according to your requirement. 

Q5: How can you guarantee the goods you offer is qualified? 
Re: We always believe honesty and responsibility are basis of one company, so whatever products we provide 

for you all are qualified. We will have goods tested and provide COA before delivery for sure.