| ≥1 piece |
Propyl p-Hydroxybenzoate
Product Number:SX2004
Chemical name: 4-Hydroxybenzoic acid propyl ester
Product name:Propyl 4-hydroxybenzoate
Molecular formula:C10H12O3
Molecular weight:180.20
CAS#:94-13-3
Physical and chemical properties: white crystal. Easily soluble in alcohol and ether, almost insoluble in water. Relative density is (d4102) 1.0630, refractive index is (nD102)1.5050.
Quality standard
| Item | Index | ||
| Q/SH 024-2016 | BP | USP | |
| Appearance | / | Colorless crystal or white crystalline powder | / |
| Content (dry basis) % ≥ | 99.0-100.5 | 99.0-100.5 | 98.0-102.0 |
| Melting point ºC | 95-98 | 96-99 | 96-99 |
| Acidity | / | Qualified | Qualified |
| Sulfate (SO42-) % ≤ | 0.024 | / | / |
| Heavy metal (Pb) % ≤ | 0.001 | / | / |
| Arsenic (AS) % ≤ | 0.0001 | / | / |
| Drying loss % ≤ | 0.50 | / | 0.50 |
| Residue on ignition % ≤ | 0.05 | 0.1 | 0.1 |
| Mass fraction of free acid (PHBA)% ≤ | 0.55 | / | / |
| Identification test | / | / | Qualified |
| Related substances | / | Qualified | / |
| Appearance | / | Clear and transparent | / |
| Organic volatile impurities | / | / | Qualified |
Uses: the product is mainly used as preservative of cosmetics, drugs and feeds.
Packing: plastic bag, 1kg/bag, 20 bags/carton, or cardboard drum lined with plastic bag, net weight is 25kg or 50kg.
*Special requirements can be negotiated