Benzenesulfonic acid is often used as a catalyst and water absorbent, mainly for the production of phenol through alkali melting, and also for the production of resorcinol, etc. It is often used as a catalyst in esterification and dehydration reactions.
Product Name
Benzenesulfonic Acid
Multiple Names
17-120a;
Bl70;
Benzenesulfonicacid90%Technicalgrade;
Benzenesulfonicacidtechnicalgrade;
Benzolsulfonsaeuchemicalbookre;
Benzenesulfonicacidsolution70%Inwa;
Benzenesulfonicacid,Tech.,90%;
Benzenesulfonicacidsolution30-35%
CAS No. 98-11-3
EC No. 202-638-7
MF No. C6H6O3S
MW No. 176.1903
Assay Item | Standard |
Form | Damp Crystalline Solid or Fused Mass |
Color | Yellow to light brown |
Acidity Coefficient (pKa) | 0.7 |
Melting Point | 30-60 °C |
Refractive Index | 1.5151 |
PH | 2 |
Less oxidizing than sulfuric acid.
Slow reaction with carbonate.
Low corrosivity and safe use.
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