2-(4-Hydroxyphenylazo)benzoic acid

CAS No.：1634-82-8

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This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
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2-(4-Hydroxyphenylazo)benzoic acid Basic information

Product Name:	2-(4-Hydroxyphenylazo)benzoic acid
Synonyms:	2'-(4-HYDROXYPHENYLAZO)BENZOIC ACID, MAT RIX SUBSTANCE;2-(4-HYDROXYPHENYLAZO)BENZOIC ACID, PGE. WITH 10 X 10 MG;2-(p-Hydroxyphenylazo)benzoic acid, 98+%;HABA GR FOR AUTOMATIC ANALYSIS;2-(4-Hydroxyphenylazo)benzoic acid, 98+%;2-(4μ-Hydroxybenzeneazo)benzoic acid, 4μ-Hydroxyazobenzene-2-carboxylic acid, HABA, HBABA;HABCA;2-(4-Hydroxyphenylazo)benzoic acid,97%
CAS:	1634-82-8
MF:	C13H10N2O3
MW:	242.23
EINECS:	216-655-2
Product Categories:	UltraPure MALDI Matrices;Analytical Chemistry;Mass Spectrometry;Matrix Materials (MALDI-TOF-MS)
Mol File:	1634-82-8.mol

2-(4-Hydroxyphenylazo)benzoic acid Chemical Properties

Melting point	204-208 °C(lit.)
Boiling point	385.05°C (rough estimate)
density	1.2480 (rough estimate)
refractive index	1.5300 (estimate)
storage temp.	Store below +30°C.
solubility	ethanol: 20 mg/mL, clear
pka	3.40±0.36(Predicted)
form	powder to crystal
color	Light yellow to Brown
BRN	1842696
Stability:	Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference	1634-82-8(CAS DataBase Reference)
EPA Substance Registry System	Benzoic acid, 2-[(4-hydroxyphenyl)azo]- (1634-82-8)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3
Hazard Note	Irritant
TSCA	Yes
HS Code	29270000

MSDS Information

Provider	Language
ACROS	English
SigmaAldrich	English
ALFA	English

2-(4-Hydroxyphenylazo)benzoic acid Usage And Synthesis

Chemical Properties	light yellow to orange powder
Uses	2-(4-Hydroxyphenylazo)benzoic acid may be used in the preparation of: 2-((4-(3,4-dicyanophenoxy)phenyl)diazenyl)benzoic acid 2,2′-((((4,5-dicyano-1,2-phenylene)bis(oxy))bis(4,1-phenylene))bis(diazene-2,1-diyl)) dibenzoic acid a multifunctional benzoxazine monomer
Definition	ChEBI: An azo compound that is azobenzene in which one phenyl group is substituted at position 4 by a hydroxy group, while the other phenyl group is substituted at position 2 by a carboxy group. It is used as a matrix in matrix-assisted laser desorption/ionizatio (MALDI) mass spectrometry.
General Description	2-(4-Hydroxyphenylazo)benzoic acid) (HABA), can be used for desorption of proteins, peptides and glycoproteins, thereby making it very advantageous for matrix-assisted laser desorption ionization mass spectrometry.

2-(4-Hydroxyphenylazo)benzoic acid Preparation Products And Raw materials

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