4-Hydroxybenzoic acid, 99%, Thermo Scientific Chemicals

Description

4-Hydroxybenzoic acid is used as an intermediate for dyes, antiseptics and active pharmaceutical ingredients. It is also used as a food preservative, corrosion inhibitor, anti-oxidant and an emulsifier. It reacts with 6-hydroxynaphthalene-2-carboxylic acid to prepare aromatic polyester called Vectran fiber. It acts as a precursor to prepare p-hydroxyphenylbenzoate, p-acetoxybenzoyl chloride and 4,4'-dihydroxybenzophenone. Further, it is used in paint additives, coating additives, processing aids, electrical and electronic products. In addition to this, it acts as a preservative in cosmetics and some ophthalmic solutions.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications
4-Hydroxybenzoic acid is used as an intermediate for dyes, antiseptics and active pharmaceutical ingredients. It is also used as a food preservative, corrosion inhibitor, anti-oxidant and an emulsifier. It reacts with 6-hydroxynaphthalene-2-carboxylic acid to prepare aromatic polyester called Vectran fiber. It acts as a precursor to prepare p-hydroxyphenylbenzoate, p-acetoxybenzoyl chloride and 4,4′-dihydroxybenzophenone. Further, it is used in paint additives, coating additives, processing aids, electrical and electronic products. In addition to this, it acts as a preservative in cosmetics and some ophthalmic solutions.

Solubility
Soluble in water, alcohol, ethanol, ether, n-butanol and acetone. Slightly soluble in chloroform. Insoluble in carbon disulfide.

Notes
Incompatible with strong oxidizing agents.

Specifications

Chemical Identifiers

• CAS: 99-96-7
• Molecular Formula: C7H6O3
• Molecular Weight (g/mol): 138.12
• MDL Number: MFCD00002547
• InChI Key: FJKROLUGYXJWQN-UHFFFAOYSA-N
• Synonym: p-hydroxybenzoic acid, 4-carboxyphenol, benzoic acid, 4-hydroxy, p-salicylic acid, benzoic acid, p-hydroxy, para-hydroxybenzoic acid, 4-hydroxybenzoesaeure, p-carboxyphenol, 4-hydroxy benzoic acid, p-oxybenzoesaure german
• PubChem CID: 135
• ChEBI: CHEBI:30763
• IUPAC Name: 4-hydroxybenzoic acid
• SMILES: OC(=O)C1=CC=C(O)C=C1

• Melting Point: 213°C to 218°C
• Flash Point: 199°C (390°F)
• Assay Percent Range: 99%
• Quantity: 1000 g
• Beilstein: 970950
• Merck Index: 14,4812
• Solubility Information: Soluble in water,alcohol,ethanol,ether,n-butanol and acetone. Slightly soluble in chloroform. Insoluble in carbon disulfide.
• Formula Weight: 138.12
• Percent Purity: 99%
• Chemical Name or Material: 4-Hydroxybenzoic acid

Safety and Handling

Product Identifier

• 4-Hydroxybenzoic acid

Signal Word

• Danger

Hazard Category

• Serious eye damage/eye irritation Category 1
• Specific target organ toxicity Category 3

Hazard Statement

• H318-Causes serious eye damage.
• H335-May cause respiratory irritation.

Precautionary Statement

• P261-Avoid breathing dust/fume/gas/mist/vapours/spray.
• P280-Wear protective gloves/protective clothing/eye protection/face protection.
• P305+P351+P338-IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Supplemental information

• MIXTURE LIST-Contains : p-Hydroxybenzoic acid

RUO – Research Use Only