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Ethyl p-Hydroxybenzoate 4-Hydroxybenzoic acid ethyl ester CAS: 120-47-8
Chemical name: 4-Hydroxybenzoic acid ethyl ester
Product name:Ethyl 4-hydroxybenzoate
Molecular formula:C9H10O3
Molecular weight:166.18
CAS#:120-47-8
Physical and chemical properties:White ctystal with a little bitter taste. Easily soluble in alcohol, ether and acetone, almost insoluble in water. Boiling point is 297-298℃.
Uses: the product is mainly used as preservative of foods, 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.
Item | Index | ||
GB 1886.31-2015 | BP | USP | |
Appearance | White crystalline powder | Colorless crystal or white crystalline powder | / |
Content (dry basis) %≥ | 99.0-100.5 | 99.0-100.5 | 98.0-102.0 |
Melting point℃ | 115-118 | 115-118 | 115-118 |
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 | / | / |
Related substances | / | Qualified | Qualified |
Appearance | / | Clear and transparent | Qualified |
Identification test | / | Qualified | Qualified |
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