p-Hydroxybenzoic acid
Contact Info
- Add:衢江区廿里镇, Zip:
- Contact: 毛德义
- Tel:13505708770
- Email:sx@shengxiaochemical.com
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p-Hydroxybenzoic Acid
Product Number: SX1001
Chemical Name: p-Hydroxybenzoic Acid
Trade Name: p-Hydroxybenzoic Acid
Molecular Formula: C7H6O3
Molecular Weight: 138.12
CAS#: 99-96-7
Physical and Chemical Properties: This product is a white crystalline powder, odorless, tasteless, with a numbing sensation when tasted. It is easily soluble in hot water, alcohol, ether, and acetone; slightly soluble in cold water and benzene; insoluble in carbon disulfide. Soluble in 125 parts of cold water; relative density 1.46.
Product Quality Standards
Item | Specification | |
Polymer Grade | Industrial Grade | |
Appearance | White crystalline powder | White crystalline powder |
Content (dry basis) % ≥ | 99.6 | 99.0 |
Melting Point ℃ | 214-217 | 212-216 |
Odor | Odorless | Odorless |
Solubility | Clear and transparent | Clear and transparent |
Loss on Drying % ≤ | 0.20 | 0.50 |
Color (Pt-Co) ≤ | 10 | 40 |
Ash Content % ≤ | 0.02 | 0.15 |
Sulfate (as SO42-) % ≤ | 0.01 | 0.05 |
Chloride (as Cl⁻) % ≤ | 0.005 | 0.02 |
Phenol % ≤ | 0.01 | 0.10 |
Salicylic Acid % ≤ | 0.02 | 0.10 |
4-Hydroxyisophthalic Acid ppm ≤ | 500 | / |
Methanol Insolubles ppm ≤ | 50 | / |
Potassium (K⁺) ppm | 5 | / |
Sodium (Na⁺) ppm ≤ | 5 | / |
Iron (Fe) ppm ≤ | 5 | / |
| Calcium + Magnesium (Ca²⁺ + Mg²⁺) ppm ≤ | 10 | / |
Applications: This product can be used as a preservative, dye, pharmaceutical and injection molding intermediate. It can be esterified with alcohols to produce parabens, and is also a main raw material for high-performance liquid crystal polymers and pesticide intermediates.
Packaging: This product is packaged with inner double-layer plastic and outer woven bags, net weight 25 kg per bag; or in PP bags, net weight 500 kg/bag or 1000 kg/bag.
*Special requirements can be negotiated separately.
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