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Key Documents

H20059

Sigma-Aldrich

4-Hydroxybenzoic acid

ReagentPlus®, 99%

Synonym(s):

p-HBA, p-Hydroxybenzoic acid

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About This Item

Linear Formula:
HOC6H4CO2H
CAS Number:
Molecular Weight:
138.12
Beilstein:
970950
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Quality Level

product line

ReagentPlus®

Assay

99%

mp

213-217 °C (lit.)

solubility

alcohol: freely soluble

SMILES string

OC(=O)c1ccc(O)cc1

InChI

1S/C7H6O3/c8-6-3-1-5(2-4-6)7(9)10/h1-4,8H,(H,9,10)

InChI key

FJKROLUGYXJWQN-UHFFFAOYSA-N

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General description

4-Hydroxybenzoic acid (PHBA) is a phenolic derivative of benzoic acid, used as a building block in polymer synthesis.

Application

4-Hydroxybenzoic acid can be used as a starting material to synthesize organic intermediates such as 4-acetoxybenzoic acid and 4-hydroxy-3,5-diiodobenzoic acid.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

Eye Dam. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Organic Syntheses, 56, 59-59 (1977)
2?Hydroxy?3, 5?diiodobenzoic Acid.
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Organic Syntheses, 14, 52-52 (1943)
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