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UV-320

UV-320 Structure
UV-320 structure
CAS No.
3846-71-7
Chemical Name:
UV-320
Synonyms
2-benzotriazol-2-yl-4,6-di-tert-butylphenol;HDBB;4,6-Di-tert-butyl-2-(2H-benzotriazole-2-yl)phenol;UV Absorber 320;Ultraviolet absorbent UV-320;2-(2-HYDROXY-3,5-DI-TERT-BUTYLPHENYL)BENZOTRIAZOLE;2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-di-tert-butylphenol;2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-Phenol;Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-;UV-320
CBNumber:
CB4154994
Molecular Formula:
C20H25N3O
Molecular Weight:
323.43
MDL Number:
MFCD01075688
MOL File:
3846-71-7.mol
MSDS File:
SDS
TDS File:
TDS
Last updated:2026-05-28 02:37:48
Request For Quotation

UV-320 Properties

Melting point 152-154°C
Boiling point 444.0±55.0 °C(Predicted)
Density 1.10±0.1 g/cm3(Predicted)
Flash point 215°C
storage temp. 2-8°C
solubility Chloroform (Slightly), Methanol (Slightly)
form Solid
pka 9.41±0.48(Predicted)
color White to Off-White
InChI InChI=1S/C20H25N3O/c1-19(2,3)13-11-14(20(4,5)6)18(24)17(12-13)23-21-15-9-7-8-10-16(15)22-23/h7-12,24H,1-6H3
InChIKey LHPPDQUVECZQSW-UHFFFAOYSA-N
SMILES C1(O)=C(C(C)(C)C)C=C(C(C)(C)C)C=C1N1N=C2C=CC=CC2=N1
Substances of Very High Concern (SVHC) Candidate List 2-benzotriazol-2-yl-4,6-di-tert-butylphenol (UV-320) (3846-71-7)
CAS DataBase Reference 3846-71-7(CAS DataBase Reference)
FDA UNII US7KL87A2P
EPA Substance Registry System Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)- (3846-71-7)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Health Hazard (GHS08)
GHS08
Signal word  Warning
Hazard statements  H373-H351-H412
Precautionary statements  P273-P501-P260-P314-P501-P201-P202-P281-P308+P313-P405-P501
Risk Statements  48/22-52/53
Safety Statements  26-36/37/39
RIDADR  3077
TSCA  TSCA listed

UV-320 price More Price(27)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC TRC-U850210-100MG UV-320 3846-71-7 100mg $102 2026-06-03 Buy
AK Scientific J94448 2-Benzotriazole-2-yl-4,6-di-tert-butylphenol 95% 3846-71-7 5g $12 2026-06-04 Buy
AK Scientific J94448 2-Benzotriazole-2-yl-4,6-di-tert-butylphenol 95% 3846-71-7 25g $38 2026-06-04 Buy
AK Scientific J94448 2-Benzotriazole-2-yl-4,6-di-tert-butylphenol 95% 3846-71-7 100g $91 2026-06-04 Buy
AK Scientific J10891 UV-320 99%(HPLC) 3846-71-7 5g $22 2026-06-04 Buy
Product number Packaging Price Buy
TRC-U850210-100MG 100mg $102 Buy
J94448 5g $12 Buy
J94448 25g $38 Buy
J94448 100g $91 Buy
J10891 5g $22 Buy

UV-320 Chemical Properties, Uses, Production

Uses

UV-320 is a benzotriazole UV stabilizer, which is used to increase product stability and to prevent discolouration in various consumer and industrial goods such as plastics. Benzotriazole UV stabilizers are a pollutant for the aquatic environment and have been implicated as a potential stable and toxic ligands for aryl hydrocarbon receptor in human.

Synthesis

NSC 373428

84755-44-2

UV-320

3846-71-7

The general procedure for the synthesis of 2-(2H-3,5-di-tert-butyl-2-hydroxyphenyl)benzotriazole from 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole N-oxide is as follows: Example 3: 10 g (0.03 mol) of 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole-N-oxide, 100 mg of palladium-carbon catalyst, 100 ml of solvent mixture of toluene and water (4:1 ratio by volume), and 3 g of 50% dimethylamine solution were added to a 500 ml autoclave equipped with a stirrer. After replacing the air in the autoclave with hydrogen, the hydrogen pressure was set to 10 kg/cm2. The temperature was raised to 50 °C with stirring, and the reaction was maintained at this temperature until no more hydrogen was absorbed by the mixture. After completion of the reaction, the autoclave was cooled and the catalyst was removed by filtration. A portion of the filtrate was quantitatively analyzed by GC and the yield of 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole was measured to be 85.6%. After removing the solvent from the filtrate by distillation, the residual solid was crystallized with ethanol and subsequently washed with ethanol to give 7.1 g of 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole (71% yield; melting point 152-155 °C).

References

[1] Tetrahedron Letters, 1997, vol. 38, # 48, p. 8303 - 8306
[2] Tetrahedron Letters, 1997, vol. 38, # 5, p. 845 - 848
[3] Journal of Organic Chemistry, 1995, vol. 60, p. 5683 - 5685
[4] Australian Journal of Chemistry, 1982, vol. 35, # 10, p. 2089 - 2093
[5] Patent: US5104992, 1992, A

UV-320 synthesis

96-76-4
3846-71-7
Synthesis of UV-320 from 2,4-Di-tert-butylphenol

UV-320 Preparation Products And Raw materials

Raw materials

2,4-Bis(tert-butyl)-6-[(2-nitrophenyl)azo]phenol Phenol, 2-(6-chloro-1-oxido-2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)- 2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole 4,6-Di(tert-butyl)-2-[(4-chloro-2-nitrophenyl)azo]phenol 2,3-Dichloro-1,4-naphthoquinone
NSC 373428 2-Nitroaniline 2,4-Di-tert-butylphenol 4-Chloro-2-nitroaniline 1,4-Naphthoquinone

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Preparation Products

NSC 373428 2-(5-tert-Butyl-2-hydroxyphenyl)benzotriazole

UV-320 Suppliers

Global Suppliers ( 221)
Supplier Tel Email Country ProdList Advantage
Guangdong Wengjiang Chemical Reagent Co., Ltd. 0751-2886766 13927870850 3001267247@qq.com China 9939 58
Tianjin Zhongxin Chemtech Co., Ltd. 022-66880623 sales@tjzxchem.com China 612 60
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
TAIYUAN RHF CO.,LTD. +86 351 7031519 sales@RHFChem.com China 2334 56
Beijing Ouhe Technology Co., Ltd 13552068683 13522913783 2355560935@qq.com China 11777 60
Pure Chemistry Scientific Inc. 001-857-928-2050 or 1-888-588-9418 sales@chemreagents.com United States 10174 62
Nanjing Chemlin Chemical Co., Ltd 025-83697070 13770331960 info@chemlin.com.cn China 16306 64
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202 13764082696 info@hanhongsci.com China 42917 64
Tianjin heowns Biochemical Technology Co., Ltd. 400 638 7771 sales@heowns.com China 14412 57
UHN Shanghai Research & Development Co., Ltd. 021-58958002 18930822973 sales@uhnshanghai.com China 997 58
Supplier Advantage
Guangdong Wengjiang Chemical Reagent Co., Ltd. 58
Tianjin Zhongxin Chemtech Co., Ltd. 60
J & K SCIENTIFIC LTD. 76
TAIYUAN RHF CO.,LTD. 56
Beijing Ouhe Technology Co., Ltd 60
Pure Chemistry Scientific Inc. 62
Nanjing Chemlin Chemical Co., Ltd 64
Shanghai Hanhong Scientific Co.,Ltd. 64
Tianjin heowns Biochemical Technology Co., Ltd. 57
UHN Shanghai Research & Development Co., Ltd. 58

View Latest Price from UV-320 manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
uv absorber 320 pictures 2026-06-02 uv absorber 320
3846-71-7
 25KG 98% 20 tons QINGDAO JADE NEW MATERIAL TECNOLOGY CO.,LTD
UV absorber UV-320 pictures 2026-05-28 UV absorber UV-320
3846-71-7
 $10.00 10KG 99% 10000kg Hebei Chuanghai Biotechnology Co,.LTD
UV-320 pictures 2025-06-27 UV-320
3846-71-7
 1KG 99% 500000kg Hebei Chuanghai Biotechnology Co., Ltd
  • uv absorber 320 pictures
  • uv absorber 320
    3846-71-7
  • $0.00
  • 98%
  • QINGDAO JADE NEW MATERIAL TECNOLOGY CO.,LTD
  • UV-320 pictures
  • UV-320
    3846-71-7
  • 99%
  • Hebei Chuanghai Biotechnology Co., Ltd

3846-71-7 (UV-320) Related Search:

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4,6-Di-tert-butyl-2-(2H-benzotriazole-2-yl)phenol 2-Benzotriazole-2-yl-4 6-di-tert-butylphenol 3,5-Dibutylhy-2-droxyphenylbenzotriazole 2-(3,5-Di-t-butyl-2-hydroxyphenyl)benzotriazole 2-(2H-Benzo[d][1,2,3]triazol-2-yl)-4,6-di-tert-butylphenol uv absorber uv-320 2-(2'-Hydroxy-3',5'-di-t-butylphenyl)benzotriazole TINUVIN 320 ULTRAVIOLET ABSORBER UV-320 UV-320 2-(2h-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-pheno 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)-Phenol benzotriazolelightabsorber 2-BENZOTRIAZOLE-2-YL-4,6-DI-TERT-BUTYLPHENOL 2-(2'-HYDROXY-3',5'-DI-TERT-BUTYLPHENYL)BENZOTRIAZOLE 2-(2H-BENZOTRIAZOL-2-YL)-4,6-DI-T-BUTYLPHENOL 2-(2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol 2-(3,5-DI-TERT-BUTYL-2-HYDROXYPHENYL)-2H-BENZOTRIAZOLE 2-(3,5-DI-TERT-BUTYL-2-HYDROXYPHENYL)BENZOTRIAZOLE 2-benzotriazol-2-yl-4,6-di-tert-butylphenol(UV-320) 2-bromo-2-propan-2-ylpropanedioic acid diethyl ester 2-(2'-Hydroxy-3',5'-di-tert-butylphenyl)benzotriazole2-(2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol 2H-Benzotriazol-2-yl-4,6-di-tert-butylphenol~2-(2-Hydroxy-3,5-di-tert-butylphenyl)-2H-benzotriazole Hydroxydibutylphenylbenzotriazole Ultraviolet absorbent UV-320 2-(2H-Benzotriazole-2-yl)-4,6-bis(tert-butyl)phenol 2,4-Di-tert-butyl-6-(2H-benzotriazole-2-yl)phenol Phenol, 2-(2H-benzotriazol-2-yl)-4,6-bis(1,1-dimethylethyl)- 2-(2-hydroxy-3,5-di-tert-butylphenyl)-2h-benzotriazole 2h-benzotriazol-2-yl-4,6-di-tert-butylphenol 2-(3,5-Di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole, 99+% 2-(3,5-Di-tert-butyl-2-hydroxyphenyl)2H-benzotriazole @1000 μg/mL in Acetonitrile Light stabilizer UV-320 UV-320 ISO 9001：2015 REACH JADEADD UV320 JADEWIN UV 320 Sinosorb? UV-320 2- (2H-3,5-ditert-butyl-2-hydroxyphenyl) benzotriazole 2-(2'-Hydroxy-3'5-di-tert-butylphenyl) benzotriazole 2-(3,5-Di-tert-butyl-2-hydroxyphenyl)-2H-benzotriazole in methanol C12253300 2-(3,5-Di-tert-butyl-2-hydroxypheny 2-(3,5-Di-t-butyl-2-hydroxyphenyl)benzotriazole，UV-320 2-(2H-Benzotriazol-2-yl)-4,6-bis(2,4-dimethylphenyl)phenol CHLUMIUV UV-320 2-(2-HYDROXY-3,5-DI-TERT-BUTYLPHENYL)BENZOTRIAZOLE 2-benzotriazol-2-yl-4,6-di-tert-butylphenol HDBB UV Absorber 320 Absorbent UV-320 3846-71-7 62440-22-4