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H20059

Sigma-Aldrich

4-Hydroxybenzoic acid

ReagentPlus®, 99%

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Synonym(s):
p-HBA, p-Hydroxybenzoic acid
Linear Formula:
HOC6H4CO2H
CAS Number:
Molecular Weight:
138.12
Beilstein:
970950
EC Number:
MDL number:
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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1 of 4

This Item
H6654H5501108510
4-Hydroxybenzoic acid ReagentPlus®, 99%

Sigma-Aldrich

H20059

4-Hydroxybenzoic acid

-
Methyl 4-hydroxybenzoate BioXtra, ≥99.0% (titration)

Sigma-Aldrich

H6654

Methyl 4-hydroxybenzoate

Premium Grade
Methyl 4-hydroxybenzoate ReagentPlus®, ≥99.0%, crystalline

Sigma-Aldrich

H5501

Methyl 4-hydroxybenzoate

-
4-Bromobenzoic acid 98%

Sigma-Aldrich

108510

4-Bromobenzoic acid

-
mp

213-217 °C (lit.)

mp

125-128 °C (lit.)

mp

125-128 °C (lit.)

mp

252-254 °C (lit.)

solubility

alcohol: freely soluble

solubility

ethanol: 0.1 M, clear, colorless

solubility

-

solubility

ethanol: soluble 5%, H2O: slightly soluble (hot), alcohol: slightly soluble, diethyl ether: slightly soluble

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

100

product line

ReagentPlus®

product line

BioXtra

product line

ReagentPlus®

product line

-

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 Sigma-Aldrich Co. LLC

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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Customers Also Viewed

Slide 1 of 2

1 of 2

2?Hydroxy?3, 5?diiodobenzoic Acid.
Woollett G H and Johnson W W
Organic Syntheses, 14, 52-52 (1943)
Formation of novel polymeric films derived from 4-hydroxybenzoic acid
Ferreira L, et al.
Materials Chemistry and Physics, 129, 46-52 (2011)
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)
Behrooz Darbani
International journal of molecular sciences, 22(11) (2021-06-03)
Gene clusters are becoming promising tools for gene identification. The study reveals the purposive genomic distribution of genes toward higher inheritance rates of intact metabolic pathways/phenotypes and, thereby, higher fitness. The co-localization of co-expressed, co-interacting, and functionally related genes was
L I Wiebe et al.
Drug metabolism and disposition: the biological fate of chemicals, 6(3), 296-302 (1978-05-01)
Butylated hydroxytoluene (BHT) containing the stable isotope 13C was synthesized from 2-[13C]methylpropan-2-ol. A minor constituent of urine following ingestion of BHT-13C by a human volunteer was identified as 3,5-di-(1-[13C]methyl-1-methylethyl)-4-hydroxybenzoic acid, The major metabolite detected was 13C-labeled 5-carboxy-7-(1-carboxy-1-methylethyl)-3,3-dimethyl-2-hydroxy-2,3-dihydrobenzofuran. Detailed spectral analysis

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