2-(4-Hydroxyphenylazo)benzoic acid

2-(对羟基苯偶氮)苯甲酸

Also known as: HABA, 4'-Hydroxyazobenzene-2-carboxylic acid, 4-Hydroxyazobenzene-2'-carboxylic acid, 2-(4-Hydroxybenzeneazo)benzoic acid, 2-[(4-Hydroxyphenyl)azo]benzoic acid, p-Hydroxybenzeneazo-o-benzoic acid, Benzoic acid, 2-[2-(4-hydroxyphenyl)diazenyl]-, NSC 77376, o-(p-Hydroxyphenylazo)benzoic acid

2-(4-Hydroxyphenylazo)benzoic acid (CAS 1634-82-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H10N2O3 and a molecular weight of 242.23000 g/mol. It is also known as HABA, 4'-Hydroxyazobenzene-2-carboxylic acid and 4-Hydroxyazobenzene-2'-carboxylic acid. Key properties include a melting point of 204-208 °C(lit.), a boiling point of 493.995ºC at 760 mmHg, a density of 1.3g/cm3 and a flash point of 252.559ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

1634-82-8

Jingsj CID

J-25272-8

Molecular Formula

C₁₃H₁₀N₂O₃

Chinese Name

2-(对羟基苯偶氮)苯甲酸

Molecular Weight

242.23000 g/mol

Category

Organic Acids

Last updated

8/21/2026