It is the basic raw material of major fine chemical products, widely used as a preservative in food, medicine and cosmetics, and can also be used to prepare various dyes, fungicides, couplers, etc.
Product Name
4-Hydroxybenzoic Acid
Multiple Names
P-Oxybenzoic Acid;
Para Hydroxy Benzoic Acid;
P-Hydroxybenzoic Acid;
4-Hydroxybenzoate;
Para-Hydroxybenzoic Acid
CAS No. 99-96-7
EC No. 202-804-9
MF No. C7H6O3
MW No. 137.1133
Assay Item | Standard |
Form | Crystalline Powder |
Color | White to ivory |
Acidity Coefficient (pKa) | 4.48(at 19℃) |
Melting Point | 213-217 °C |
Refractive Index | 1.4600 |
PH | 3.3 |
It is a widely used organic synthetic raw material.
Can be used as food additive.
Color developing agent for synthesis of thermosensitive dyes.
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