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240141

Sigma-Aldrich

4-Hydroxybenzoic acid

ReagentPlus®, ≥99%

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Synonym(s):
4-Carboxyphenol, 4-Hydroxybenzoic acid, Paraben-acid, p-Carboxyphenol, p-Hydroxybenzoic acid, p-Hydroxyl benzoic acid, p-Salicylic acid
Linear Formula:
HOC6H4CO2H
CAS Number:
99-96-7
Molecular Weight:
138.12
Beilstein:
970950
EC Number:
202-804-9
MDL number:
MFCD00002547
UNSPSC Code:
12352100
PubChem Substance ID:
24854406
NACRES:
NA.22

Quality Level

100

product line

ReagentPlus®

Assay

≥99%

form

powder

mp

213-217 °C (lit.)

solubility

water: soluble 125 part(lit.)
acetone: soluble(lit.)
alcohol: freely soluble(lit.)
carbon disulfide: insoluble(lit.)
chloroform: slightly soluble(lit.)
diethyl ether: soluble(lit.)

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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Application

4-Hydroxybenzoic acid can be used as a reactant to synthesize:
  • Monoesters via esterification with sucrose.
  • Thermotropic liquid crystalline polymers.
  • 4-Hydroxybenzaldoxime via one-pot chemoenzymatic method.

Legal Information

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

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H318,H335

Hazard Classifications

Eye Dam. 1 - STOT SE 3

Target Organs

Respiratory system

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

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  4. How can Product 240141, 4-Hydroxybenzoic acid, be dissolved?

    According to the chemicals encyclopedia published by the Royal Society of Chemistry, 4-Hydroxybenzoic acid is freely soluble in alcohol, and soluble in about 125 parts water.

  5. What is the shelf life of Product 240141, 4-Hydroxybenzoic acid?

    This information can be found on the product specification sheet for a related product (H20059).

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    Our best offer item is Product No. H20059.

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