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2-(4-Hydroxyphenylazo)benzoic acid

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2-(4-Hydroxyphenylazo)benzoic acid molecular structure
Molecular structure

The Sigma-Aldrich catalog lists 3 grades and pack sizes of 2-(4-Hydroxyphenylazo)benzoic acid (CAS 1634-82-8). Pick the code you need and request a quote for price and lead time from Klar Chem.

CAS1634-82-8
Molecular formulaC13H10N2O3
Molecular weight242.23 g/mol
IUPAC name2-[(4-hydroxyphenyl)diazenyl]benzoic acid
Synonyms2-[(4-hydroxyphenyl)diazenyl]benzoic acid · Benzoic acid, 2-[(4-hydroxyphenyl)azo]- · 2-(p-Hydroxyphenylazo)benzoic acid · Benzoic acid, 2-[2-(4-hydroxyphenyl)diazenyl]- · RefChem:457810 · HABA
Safety & Hazards (GHS) Warning
Irritant Irritant
  • H315 Causes skin irritation
  • H319 Causes serious eye irritation
  • H335 May cause respiratory irritation

⚠️ For information only (source: EU CLP harmonised classification and ECHA notifications, via PubChem); not a substitute for the official Safety Data Sheet (SDS).

Catalog codes and grades

Brand Product / grade Code
Sigma 2-(4-HYDROXYPHENYLAZO)BENZOIC ACID,>= 9 H5126-1G
H5126-25G
H5126-5G		 Request Quote

For information only; specifications and availability are confirmed at quotation. Prices are not listed.