For resin curing, it is the most important additive in the acid tin plating process, and also has the function of acid resin foaming, and is used as the curing agent for casting resin at room temperature.
Product Name
4-Hydroxybenzenesulfonic Acid
Multiple Names
4-Hydroxybenzenesulfonic Acid;
Phenol-4-Sulfonic Acid;
Phenol-p-Sulphonic Acid;
P-Phenolsulfonic Acid Hydrate;
Phenolsulfuric Acid;
4-Hydroxy-Benzenesulfonicaci;
4-Hydroxyphenylsulfonic Acid;
4-Hydroxyphenylsulfonicacid;
4-Phenolsulfonic Acid;
4-Phenolsulfonicacid;
Benzenesulfonic Acid, P-Hydroxy-;
Benzenesulfonicacid,4-Hydroxy-;
Phenol-4-Sulfonicacidsolutio;
Phenol Sulphonate;
4-Hydroxybenzenesulfonic Acid;
4-Hydroxy-Benzenesulfonicacid;
P-Hydroxybenzenesulfonic Acid;
4-(4-Hydroxyphenyl)Azobenzenesulfonic Acid
CAS No. 98-67-9
EC No. 202-691-6
MF No. C6H6O4S
MW No. 174.20
Assay Item | Standard |
Form | Liquid |
Color | White to Light yellow to Light red |
Acidity Coefficient (pKa) | 9.11(at 25℃) |
Melting Point | 52 °C |
Refractive Index | n20/D 1.489 |
Density | 1.337 g/mL at 25 °C |
Soluble in water, hot alcohol and glycerin
An intermediate that is very important in the pharmaceutical industry
Stable, combustible, incompatible with strong oxidizing agents.
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