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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:
99-96-7
Molecular Weight:
138.12
Beilstein/REAXYS Number:
970950
EC Number:
202-804-9
MDL number:
MFCD00002547
UNSPSC Code:
12352100
PubChem Substance ID:
24895495
NACRES:
NA.22

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
GHS05,GHS07

signalword

Danger

hcodes

H318,H335

Hazard Classifications

Eye Dam. 1 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Esterification of Carboxylic Acids with Trialkyloxonium Salts: Ethyl and Methyl 4?Acetoxybenzoates: Benzoic acid, 4?(acetyloxy)?, ethyl and methyl esters.
Douglas J, et al.
Organic Syntheses, 56, 59-59 (1977)
Formation of novel polymeric films derived from 4-hydroxybenzoic acid
Ferreira L, et al.
Materials Chemistry and Physics, 129, 46-52 (2011)
2?Hydroxy?3, 5?diiodobenzoic Acid.
Woollett G H and Johnson W W
Organic Syntheses, 14, 52-52 (1943)
Behrooz Darbani
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