P-hydroxybenzoic acid
CAS: 99-96-7
Category: Organic Intermediates
| Purity | 99% (Industrial Grade), 99.6% (Polymer Grade) |
| Molecular Formula | C7H6O3 |
| Molecular Weight | 138.12 |
| Appearance | White crystalline powder, tasteless, odorless. |
| Packaging | 25 kg fiber drums or plastic woven bags with inner liners. |
| Testing Indicators | Appearance — Visual inspection; Content (dry basis) — HPLC; Melting Point — Capillary method; Drying Loss — Gravimetric (Oven drying); Color (Pt-Co) — Colorimetric analysis (ASTM D1209); Ash Content — Gravimetric (Muffle furnace); Sulfate — Turbidimetric; Chloride — Nephelometric; Phenol, Salicylic Acid, 4-Hydroxyisophthalic Acid (HIPA) — HPLC; Insoluble in Methanol — Gravimetric; Potassium, Sodium, Iron, Calcium+Magnesium — Atomic Absorption Spectroscopy (AAS) or ICP-OES. |
| Storage Notes | Store in a cool, dry, well-ventilated area away from moisture and incompatible materials. Keep container tightly closed when not in use. |
| Lead Time | 10 days |
Used as a preservative, dye intermediate, pharmaceutical intermediate, and injection molding intermediate. Also serves as the main raw material for polymer liquid crystal polymers and as a raw material for pesticide intermediates. Additionally used for alcohol esterification.