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(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid

CAS No.
105299-45-4
Chemical Name:
(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid
Synonyms
4-(4'-Hydroxyphenylazo)benzoic acid 97%;(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid;4-[(1E)-(4-Hydroxyphenyl)azo]benzoic acid;Benzoic acid, 4-[(1E)-(4-hydroxyphenyl)azo]-;4-[(1E)-2-(4-hydroxyphenyl)diazen-1-yl]benzoic acid
CBNumber:
CB32750908
Molecular Formula:
C13H10N2O3
Molecular Weight:
242.23
MDL Number:
MFCD00225268
MOL File:
105299-45-4.mol
MSDS File:
SDS
Last updated:2026-05-28 01:10:14

(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid Properties

Melting point 270-280°C
Boiling point 497.7±30.0 °C(Predicted)
Density 1.30±0.1 g/cm3(Predicted)
storage temp. 2-8°C
pka 3.94±0.10(Predicted)
form solid
InChI 1S/C13H10N2O3/c16-12-7-5-11(6-8-12)15-14-10-3-1-9(2-4-10)13(17)18/h1-8,16H,(H,17,18)/b15-14+
InChIKey HLVCZTOFOWHIJZ-CCEZHUSRSA-N
SMILES OC(C1=CC=C(/N=N/C2=CC=C(O)C=C2)C=C1)=O
UNSPSC Code 12352106
NACRES NA.22

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H319
Precautionary statements  P264-P270-P280-P301+P312-P305+P351+P338-P337+P313
Hazard Codes  Xn
Risk Statements  22-36
Safety Statements  26
WGK Germany  3
Storage Class 11 - Combustible Solids
Hazard Classifications Acute Tox. 4 Oral
Eye Irrit. 2

(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid price More Price(15)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich S238503 4-(4-HYDROXY-PHENYLAZO)-BENZOIC ACID AldrichCPR 105299-45-4 1 unit $152 2026-04-30 Buy
Sigma-Aldrich 771058 4-(4′-Hydroxyphenylazo)benzoic acid 97% 105299-45-4 250mg $91.4 2026-04-30 Buy
Sigma-Aldrich S238503 4-(4-HYDROXY-PHENYLAZO)-BENZOIC ACID AldrichCPR 105299-45-4 25MG $139 2024-03-01 Buy
Sigma-Aldrich 771058 4-(4′-Hydroxyphenylazo)benzoic acid 97% 105299-45-4 50mg $66.8 2023-06-20 Buy
aablocks AA0096CF (E)-4-((4-Hydroxyphenyl)diazenyl)benzoic acid ≥97% 105299-45-4 50mg $23 2026-05-28 Buy
Product number Packaging Price Buy
S238503 1 unit $152 Buy
771058 250mg $91.4 Buy
S238503 25MG $139 Buy
771058 50mg $66.8 Buy
AA0096CF 50mg $23 Buy

(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid Chemical Properties, Uses, Production

Uses

4-(4′-Hydroxyphenylazo)benzoic acid may be used to synthesize 4-(4-propyloxyphenylazo)benzoic acid via Williamson synthesis by reacting with 1-bromopropane.

reaction suitability

reagent type: cross-linking reagent

(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid Suppliers

Global Suppliers ( 25)
Supplier Tel Email Country ProdList Advantage
Adamas Reagent, Ltd. 400-6009262 15618770481 yhx@titansci.com China 14098 59
Sigma-Aldrich 021-61415566 800-8193336 orderCN@merckgroup.com China 51389 80
Chengdu Kamel Pharmaceutical Co., Ltd 028-67136579 15828051124 sales@kamelpharm.com China 2473 55
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
Shandong Ono Chemical Co., Ltd. 0539-6362799 20) China 9998 58
Jilin Province Woda Biotechnology Co., Ltd. 13504435624 1927928688@qq.com China 1644 58
Zhengzhou Alpha Chemical Co. LTD 0371-53732842 13383863444 3838551451@qq.com China 9996 58
Energy Chemical 400-0056266 marketing1@energy-chemical.com China 44927 58
Shanghai Haohong Pharmaceutical Co., Ltd. 400-8210725 4008210725 malulu@leyan.com China 39796 58
Bide Pharmatech Ltd. 400-1647117 13681763483 product02@bidepharm.com China 59929 58
(E)-4-[(4-Hydroxyphenyl)azo]benzoic acid 4-(4'-Hydroxyphenylazo)benzoic acid 97% Benzoic acid, 4-[(1E)-(4-hydroxyphenyl)azo]- 4-[(1E)-(4-Hydroxyphenyl)azo]benzoic acid 4-[(1E)-2-(4-hydroxyphenyl)diazen-1-yl]benzoic acid 105299-45-4