P-Toluenesulfonic Acid / CH3c6h4so3h
|Min. Order (Tons)||FOB Price|
|20+||US $186-365 / Ton|
Molecular formula: CH3C6H4SO3H.
CAS No.: 104-15-4.
Color: Colorless (white) power or crystal.
Min. Order: 20 metric tons.
Packing: 25 kg packed in woven bag with inner plastic bag.
Delivery time: Within 7 days after got deposit.
Direct manufacturer with high quality and competitive price in home and abroad.
P-Toluenesulfonic acid (PTSA) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. It is a white solid that is soluble in water, alcohols, and other polar organic solvents. The 4-CH3C6H4SO2- group is known as tosyl group and is often abbreviated as Ts or Tos. Most often, TsOH refers to the monohydrate, TsOH. H2O.
TsOH is a strong organic acid, about a million times stronger than benzoic acid. It is one of the few strong acids that is solid and, hence, conveniently weighed. Also, unlike some strong mineral acids (especially nitric acid, sulfuric acid, and perchloric acid), TsOH is non-oxidizing.
|p -Toluenesulfonic acid|
|Purity %||≥ 99 98 98 97 96|
|Sulfate (free acid SO4)||≤ 0.01 0.1 0.1 0.3 1.5|
|Ignition residue||≤0.1% ≤0.2%|
|Molar mass||172.20 g/mol (anhydrous)|
190.22 g/mol (monohydrate)
|Appearance||colorless (white) solid or crystal|
|Density||1.24 g/cm 3|
|Melting point||38 °C, 311 K (anhydrous)|
103-106 °C, 376-379 K (monohydrate)
|Flashing point||41 °C|
|Boiling point||140 °C, 413 K, 284 °F (at 20 mmHg)|
|Solubility in water||67 g/100 mL|
|Acidity (p K a)||-2.8 (water)|
8.5 ( acetonitrile )
|Main hazards||skin irritant|
|Related sulfonic acids||Benzenesulfonic acid|