Chemical Name: 4-Hydroxybenzoic acid
CAS No: 99-96-7
Appearance: White Powder
Packing: 25kg/fiber drum or kraft paper bags
Purity: 99.0%
4-Hydroxybenzoic acid CAS 99-96-7
Description
4-Hydroxybenzoic acid Quick Details
Chemical Name: 4-Hydroxybenzoic acid
Synonyms: p-Hydroxybenzoic acid; PHBA; 4-Carboxyphenol
CAS No: 99-96-7
Molecular Formula: C7H6O3
Molecular Weight: 138.12
Chemical Structure:
Appearance: White Powder
Purity: ≥ 99.0% / 99.5%
Specification
| Item | Specifications |
| Appearance | White powder |
| Purity | ≥99.0% |
| Melting point | 213-217°C(lit.) |
| Loss on Drying | ≤ 0.5% |
| Residue on Ignition | ≤ 0.1% |
| Heavy Metals | ≤ 10 ppm |
4-Hydroxybenzoic acid Usage
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Essential Precursor for Paraben Preservatives (Core Domain): Serves as the primary starting material for synthesizing parabens (Ethylparaben, Propylparaben, Butylparaben, etc.).
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Personal Care & Food Preservation: Parabens act as broad-spectrum antimicrobial preservatives widely incorporated into skincare cosmetics, toiletries, food preparations, and pharmaceutical formulations. Applications include soy sauce, vinegar, fruit flavorings, fruit and vegetable products, and pickled foods.
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Monomer for Liquid Crystal Polymers (LCP): In advanced materials science, it serves as a critical co-monomer for producing wholly aromatic Liquid Crystal Polymers (LCP, e.g., Vectra resins), imparting outstanding heat resistance, high mechanical strength, and dielectric properties needed in 5G electronics and connectors.
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Pharmaceutical & Chemical Intermediate: Applied in synthesizing cardiovascular APIs, antifungal therapeutics, organic pigments, and fine chemical reagents. In the dye industry, it is used to synthesize color developers for thermal-sensitive dyes.
- Other industrial applications: It is used in the production of color film, the oil-soluble color coupler “538,” and plasticizers for Nylon 12. Additionally, it is utilized in the manufacture of liquid crystal polymers and plastics.
4-Hydroxybenzoic acid Packing
25kg/fiber drum or kraft paper bags.
Storage
- Store in a cool, dry, and well-ventilated dedicated chemical warehouse.
- Keep away from heat sources, open flames, and direct sunlight; suggested storage temperatures should not exceed 30°C.
- Keep containers hermetically sealed and sheltered from atmospheric moisture.
- Strictly avoid joint storage alongside strong oxidizers.