4-Hydroxybenzoic Acid CAS 99-96-7 Purity ≥99.5% Factory High Quality

Short Description:

Name: 4-Hydroxybenzoic Acid (Polymer Grade) 

CAS: 99-96-7

Purity: ≥99.5%

Appearance: White Crystalline Powder

High Quality, Commercial Production

Inquiry: alvin@ruifuchem.com

Product Detail

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Product Tags


Manufacturer Supply, High Purity, Commercial Production 
Chemical Name: 4-Hydroxybenzoic Acid 
CAS: 99-96-7

Chemical Properties:

Chemical Name 4-Hydroxybenzoic Acid (Polymer Grade)
Synonyms p-Hydroxybenzoic Acid; PHBA; Para Hydroxy Benzoic Acid; p-Salicylic Acid
CAS Number 99-96-7
CAT Number RF-PI407
Stock Status In Stock, Production Scale Up to Tons
Molecular Formula C7H6O3
Molecular Weight 138.12
Brand Ruifu Chemical


Item Specifications
Appearance White Crystalline Powder
Purity  ≥99.5% 
Melting Point 214.0℃~217.0℃
Odor Odorless
Solubility Clear and Transparent
Insolubility of Methanol ≤50ppm
Moisture (K.F) ≤0.20%
Color (Pt-Co) ≤15
Sulfate Ash ≤0.02%
Sulfate (SO4) ≤50ppm
Chloride (Cl) ≤50ppm
Phenol ≤0.01%
Salicylic acid ≤0.02%
4-Hydroxyisophthalic Acid ≤500ppm (HIPA)
Potassium (K) ≤10ppm
Sodium (Na) ≤10ppm
Iron (Fe) ≤10ppm
Calcium+Magnesium (Ca+Mg) ≤5ppm
Test Standard Enterprise Standard
Usage Pharmaceutical Intermediates

Package & Storage:

Package: Bottle, Aluminium foil bag, 25kg/Cardboard Drum, or according to customer's requirement.

Storage Condition: Store in sealed containers at cool and dry place; Protect from light, moisture.





4-Hydroxybenzoic Acid, also known as p-Hydroxybenzoic acid (PHBA) CAS 99-96-7, is a monohydroxybenzoic acid, a phenolic derivative of benzoic acid. It is a white crystalline solid that is slightly soluble in water and chloroform but more soluble in polar organic solvents such as alcohols and acetone. 4-Hydroxybenzoic Acid is primarily known as the basis for the preparation of its esters, known as parabens, which are used as preservatives in cosmetics and some ophthalmic solutions. It is isomeric with 2-hydroxybenzoic acid, known as salicylic acid, a precursor to aspirin, and with 3-Hydroxybenzoic acid. 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. 4-Hydroxybenzoic Acid is of significant commercial importance.

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