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Merck
CN

633461

Sigma-Aldrich

4-Formyl-3-hydroxybenzoic acid

95%

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About This Item

Empirical Formula (Hill Notation):
C8H6O4
CAS Number:
Molecular Weight:
166.13
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22
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Assay

95%

form

solid

mp

235-240 °C (lit.)

functional group

aldehyde
carboxylic acid

SMILES string

OC(=O)c1ccc(C=O)c(O)c1

InChI

1S/C8H6O4/c9-4-6-2-1-5(8(11)12)3-7(6)10/h1-4,10H,(H,11,12)

InChI key

FDDHFCWYCKQKGY-UHFFFAOYSA-N

Application

4-Formyl-3-hydroxybenzoic acid can be used as a reactant to prepare:
  • A pH-sensitive fluorescent probe 4,4′-(hydrazine-1,2-diylidene bis(methanylylidene)) bis(3-hydroxybenzoic acid (HDBB) by one-step condensation reaction with hydrazine.
  • 2-Oxo-2H-1-benzopyran-3,7-dicarboxylic acid by condensation reaction with diethyl malonate.
  • Schiff base ligands for the preparation of stable and functional Schiff base metal complexes.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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