Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
p-Salicylic acid
1. Basic Product Information
Product Name: p-Salicylic acid
Other Names: 4-Hydroxybenzoic acid, p-Hydroxybenzoic acid
CAS Number: 99-96-7
Molecular Formula: C?H?O?
Molecular Weight: 138.12
Product Category: Fine organic chemical, cosmetic raw material, food preservative intermediate, pharmaceutical intermediate, dye intermediate
2. Physical and Chemical Properties
Physical Indexes
- Appearance: White crystalline powder
- Odor: Faint slight phenolic odor
- Solubility: Slightly soluble in cold water, soluble in hot water, ethanol, methanol, ether, acetone; insoluble in benzene and petroleum ether
- Melting Point: 214–217 °C
- Density (20 °C): 1.49 g/cm3
- Hygroscopicity: Non-hygroscopic under fully sealed dry storage
- Aqueous Stability: Stable in neutral and weak acidic water; dissolves and forms salt with alkaline aqueous solution
Chemical Characteristics
- Molecular Structure: Benzene ring with para-substituted hydroxyl group and carboxyl group, dual functional phenolic acid structure
- Core Reactivity: Carboxyl group can form esters to produce methylparaben, ethylparaben, propylparaben, butylparaben; phenolic hydroxyl group has antioxidant and bacteriostatic effects
- Photostability: Slightly light-sensitive; long-term UV exposure leads to slight yellow discoloration
- Thermal Stability: Stable below 200 °C; decarboxylation occurs above melting point to generate phenol
- Chemical Compatibility: Compatible with neutral and weak acidic raw materials; incompatible with strong alkalis, heavy metal ions and strong oxidants
3. Main Application Fields
- Core Application: Preservative Intermediate
Key raw material for synthesizing parabens series preservatives widely used in cosmetics, personal care products, food and medicines - Cosmetic Functional Raw Material
Antioxidant, antibacterial and mild exfoliating ingredient for skin care formulations - Pharmaceutical Synthetic Intermediate
Building block for anti-inflammatory, bacteriostatic and antipyretic pharmaceutical APIs - Dye & Pigment Intermediate
Raw material for synthesizing water-soluble azo dyes, textile color fixing agents - Laboratory Analytical Reagent
Standard phenolic acid substrate for organic synthesis and cosmetic formulation research
4. Platform Category & Product Group Selection Guide
1) Domestic B2B Platform Category
Recommended Path: Organic Intermediates / Organic Intermediates
Reason: Universal phenolic fine chemical intermediate for cosmetics, food additives and pharmaceutical synthesis
2) English Product Group Dropdown Options
Recommended Selection: Basic Organic Chemicals
Do not select Pharmaceutical Chemicals; it is a general industrial synthetic raw material rather than exclusive human drug API
3. Standard Foreign Trade Packaging Specification
1kg aluminum foil vacuum bag for lab samples; 25kg fiber drum lined with double PE inner bags for bulk orders; customized packaging specifications are available upon request
5. Quality Specification Table
| Test Item | Standard Requirement |
| CAS Number | 99-96-7 |
| Molecular Formula | C?H?O? |
| Appearance | Uniform white crystalline powder without yellow impurities |
| HPLC Purity | Synthetic Grade ≥99.0%, Preservative Grade ≥99.5% |
| Melting Point | 214–217 °C |
| Water Content (KF Method) | ≤0.20% |
| Single Unknown Impurity | ≤0.10% |
| Total Related Substances | ≤0.40% |
| Heavy Metals (Pb) | ≤10 ppm |
| Standard Storage Package | Light-proof nitrogen-sealed aluminum foil vacuum bag, 25kg PE lined fiber drum |
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