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UV Absorber 326

Characterization Physical Properties Features/Benefits Applications Guidelines for use Handling & Safety
UV Absorber 326
UV Absorber 326 structure
CAS No.
3896-11-5
Chemical Name:
UV Absorber 326
Synonyms
UV73;UV-326;tinuvin;HRsorb-326;TINUVIN 326;BUMETRIZOLE;Sumisorb 300;ACETOSTAB 326;UV ABSORBER 326;Absorber UV-326
CBNumber:
CB4256124
Molecular Formula:
C17H18ClN3O
Formula Weight:
315.8
MOL File:
3896-11-5.mol

UV Absorber 326 Properties

Melting point:
144-147 °C(lit.)
Boiling point:
460.4±55.0 °C(Predicted)
Density 
1.26±0.1 g/cm3(Predicted)
pka
9.31±0.48(Predicted)
InChIKey
OCWYEMOEOGEQAN-UHFFFAOYSA-N
Indirect Additives used in Food Contact Substances
2-(3'-TERT-BUTYL-2'-HYDROXY-5'-METHYL-PHENYL)-5-CHLOROBENZOTRIAZOLE
CAS DataBase Reference
3896-11-5(CAS DataBase Reference)
EWG's Food Scores
1
FDA UNII
7ZF18Q354W
EPA Substance Registry System
2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-p-cresol (3896-11-5)
SAFETY
  • Risk and Safety Statements
Symbol(GHS) 
GHS07
Signal word  Warning
Hazard statements  H315-H319
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Hazard Codes  Xi
Risk Statements  36/37/38-53
Safety Statements  26-36-61
WGK Germany  1
HS Code  29339900

UV Absorber 326 price More Price(3)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 422479 2-tert-Butyl-6-(5-chloro-2H-benzotriazol-2-yl)-4-methylphenol 98% 3896-11-5 50g $60.7 2020-08-18 Buy
TCI Chemical H0559 2-(5-Chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol >98.0%(GC) 3896-11-5 25g $60 2020-06-24 Buy
TCI Chemical H0559 2-(5-Chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol >98.0%(GC) 3896-11-5 500g $189 2020-06-24 Buy

UV Absorber 326 Chemical Properties,Uses,Production

Characterization

UV Absorber 326 is a UV absorber of the hydroxyphenylbenzotriazole class, which imparts outstanding light stability to plastics and other organic substrates.

Physical Properties

Features/Benefits

UV Absorber 326 has a wide range of indirect food approvals in polyolefins. It has a low volatility at high temperatures and high resistance to thermal degradation and can therefore be used without significant loss or decomposition in the polyolefin compounding and molding processes. In the use for the UV protection of polyester resins, TINUVIN 326 does not form colored complexes with the metallic salts used for the curing process of these resins.

Applications

UV Absorber 326 is especially suited for polyolefins and cold cured polyesters.

Guidelines for use

Handling & Safety

In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. Use only with adequate ventilation. Prevent contamination of the environment. Avoid dust formation and ignition sources. For more detailed information please refer to the material safety data sheet.

Chemical Properties

Pale Yellow Solid

Originator

Bumetrizole,Onbio Inc.

Uses

Bumetrizole is an intermediate reactant in the synthesis of UV light absorbers for polyester fibers.

Manufacturing Process

To a 2000 ml 3-necked, round-bottomed flask equipped with an agitator, reflux condenser, nitrogen inlet and thermometer were charged 140.5 g of 2'- hydroxy-3'-t-butyl-5'-methyl-5-chloro-2-nitroazobenzene, 119 g of isopropanol and 80 g of Amsco mineral spirits. A stream of nitrogen was introduced over the surface of the contents of the flask and the nitrogen atmosphere was then maintained throughout the remainder of the reduction process. 13.7 g of 50% aqueous sodium hydroxide solution and 222 g of water were added and the temperature of the contents of the flask were adjusted to 55°C. The ratio of the moles of alkali to moles of o-nitroazobenzene intermediate used was is 0.848/1. 104 g of zinc dust was added in 5 portions over a 2 hours period with the temperature of the flask being held at 55-60°C with some slight external cooling. The total concentration of iron impurities from all reactants less than 150 ppm based on zinc used. After all the zinc was added, the temperature was raised to 60°C and held at this temperature until a spot test indicated no more o-nitroazobenzene intermediate was present. The temperature was then raised to 65°C and held there for 4 to 5 hours or until TLC analysis indicated that no more of the N-oxy-intermediate was present. 62.6 g of anhydrous sodium sulfate and 35.6 g of water were then added, the batch was heated to 70°C and stirred for 15 min. The material was then allowed to stand and separate into three liquid phases plus unreacted zinc dust. The top two layers containing the desired product were transferred to another flask. The remaining aqueous zinc slurry was washed at 65-70°C with three successive 16 g portions of Amsco mineral spirits: isopropanol 50:50. The combined product layers and wash liquids were then washed once at 70°C with an aqueous hydrochloric acid solution made from 130 g of water and 40 g of 32% hydrochloric acid to remove cleavage amine by-products. A second and third wash followed at 70°C with aqueous hydrochloric acid solutions made each from 65 g of water and 20 g of 32% hydrochloric acid. The last wash was essentially colorless. 14 g of 32% hydrochloric acid and 220 g of isopropanol were added to the solution of the product. The batch was allowed to crystallize slowly. The solid product form was filtered and washed with isopropanol at 0°C to give 110 g of 5-chloro-2-(2-hydroxy-3-t-butyl-5- methylphenyl)-2H-benzotriazole with a melting point of 140-141°C.

Therapeutic Function

Sunscreen agent

UV Absorber 326 Preparation Products And Raw materials

Raw materials

Preparation Products


UV Absorber 326 Suppliers

Global( 273)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
QINGDAO JADE NEW MATERIAL TECNOLOGY CO.,LTD
+86 13658692156
(+86-532)68077006 zandrew@jadenmtc.com CHINA 219 58
RIANLON CORPORATION
+(86)13011086067 +86 18522174966
+86 22 8371 8815 market@rianlon.com CHINA 88 58
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21842 58
Shanghai Bojing Chemical Co.,Ltd.
+86-21-37122233
+86-21-37127788 Candy@bj-chem.com CHINA 497 55
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22625 55
Shanghai Time Chemicals CO., Ltd.
+86-021-57951555
+86-021-57951555 jack.li@time-chemicals.com CHINA 1365 55
Hangzhou FandaChem Co.,Ltd.
0086 158 5814 5714 (Mobile
+86-571-56059825 fandachem@gmail.com CHINA 3274 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 2754 55
Tianjin Zhongxin Chemtech Co., Ltd.
022-66880623
022-66880086 sales@tjzxchem.com CHINA 602 58
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30039 58

View Lastest Price from UV Absorber 326 manufacturers

Image Release date Product Price Min. Order Purity Supply Ability Manufacturer
2019-08-08 UV Absorber 326
3896-11-5
US $8.50 / KG 1KG 99.0% in stock 2000 MT per month Chemwill Asia Co.,Ltd.
2019-08-08 Bumetrizole UV-326 3896-11-5
3896-11-5
US $12.50 / KG 1KG 99.0% in stock 1000 MT per month Chemwill Asia Co.,Ltd.
2019-04-08 Ultraviolet absorber UV-326 Bumetrizole
3896-11-5
US $1.00 / kg 1kg Ultraviolet absorber UV-326 thousand metric tons capacity Factory Chemwill Asia Co.,Ltd.

UV Absorber 326 Spectrum


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