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P-Toluenesulfonic Acid
SINOBIO
2904100000
p-Toluenesulfonic acid (CAS 104-15-4), also known as p-toluenesulfonic acid (PTSA) or p-toluenesulfonic acid monohydrate (TsOH·H₂O), is an important organic compound. The following is a detailed introduction:
Chemical Name: p-Toluenesulfonic acid
CAS Number: 104-15-4
Molecular Formula: C₇H₈O₃S (anhydrous); C₇H₁₀O₄S (monohydrate)
Molecular Weight: 172.20 g/mol (anhydrous); 190.22 g/mol (monohydrate)
Appearance: White solid, typically present as needle-shaped or powdery crystals
Solubility: Soluble in water, alcohols, and other polar organic solvents such as ethanol and ether; insoluble in non-polar solvents such as benzene and toluene
Stability: Excellent stability during storage and use, but should be avoided from contact with strong oxidants, strong bases, and most common metals to prevent chemical reactions.
-Acidity: P-Toluenesulfonic Acid is a strong organic acid, approximately a million times more acidic than benzoic acid. In aqueous solution, it dissociates almost completely, exhibiting strong acidity.
-Structure: The 4-CH₃C₆H₄SO₂- group in its molecule is known as the p-toluenesulfonyl group (tosyl group), often abbreviated as Ts or Tos.
| Items | Technical grade | Pharma grade | Refine grade | Reagent grade | Electronic grade |
| Assay (as C7H8O3S·H2O)≥% | 93.0 | 95.0 | 97.0 | 99.0 | 99.9 |
| Free acid (as H2SO4) ≤% | 3.0 | 2.0 | 0.7 | 0.1 | 0.03 |
| Moisture≤% | 4.0 | 3.5 | 2.3 | 0.9 | 0.1 |
| Fe content≤ppm | 50 | 30 | 20 | 10 | 1 |
| Residue on ignition ≤% | / | 0.2 | 0.2 | 0.02 | 0.02 |
| Dissolve test of ethanol | / | Qualified | Qualified | Qualified | Qualified |
| Dissolve test of water | / | Qualified | Qualified | Qualified | Qualified |
| Main metal ions ≤ppm | / | / | / | / | 1 |
-P-Toluenesulfonic Acid is commonly used as a catalyst in organic synthesis due to its high catalytic activity and good selectivity.
-It participates in a variety of important reactions, such as Friedel-Crafts alkylation and acylation, Diels-Alder reaction, and Heck reaction.
-In the pharmaceutical industry, it is used in synthetic processes such as transesterification, carboxylation, and acetalization.
-In the coatings industry, P-Toluenesulfonic Acid is used as a catalyst to accelerate the curing process of coatings.
-In the plastics and polymers industry, it participates in polymerization reactions and improves polymer properties.
-It is also used as a descaling agent in metal cleaning, an additive in electroplating baths, and a neutralizing agent in acrylonitrile production.
-P-Toluenesulfonic Acid acts as a catalyst and sulfonating agent in dye synthesis, promoting dye formation.
-It aids in the production of water-soluble dyes and dye intermediates, improving dye color fastness and the overall quality of textiles.
-The sulfonation ability of P-Toluenesulfonic Acid enables the production of anionic surfactants with excellent cleaning and foaming properties.
-These surfactants are widely used in household and industrial cleaning products.
Standard package: 25kg/drum
Sample is also avaliable, provide customized package for different quantity.
Shipping: by express DHL,FEDEX,TNT.....by Sea or by Air, accoring to client's request.
Delivery time: 7 working days after receiving your deposit.
Payment: T/T,western union,moneygram or as your requirement.
p-Toluenesulfonic acid (CAS 104-15-4), also known as p-toluenesulfonic acid (PTSA) or p-toluenesulfonic acid monohydrate (TsOH·H₂O), is an important organic compound. The following is a detailed introduction:
Chemical Name: p-Toluenesulfonic acid
CAS Number: 104-15-4
Molecular Formula: C₇H₈O₃S (anhydrous); C₇H₁₀O₄S (monohydrate)
Molecular Weight: 172.20 g/mol (anhydrous); 190.22 g/mol (monohydrate)
Appearance: White solid, typically present as needle-shaped or powdery crystals
Solubility: Soluble in water, alcohols, and other polar organic solvents such as ethanol and ether; insoluble in non-polar solvents such as benzene and toluene
Stability: Excellent stability during storage and use, but should be avoided from contact with strong oxidants, strong bases, and most common metals to prevent chemical reactions.
-Acidity: P-Toluenesulfonic Acid is a strong organic acid, approximately a million times more acidic than benzoic acid. In aqueous solution, it dissociates almost completely, exhibiting strong acidity.
-Structure: The 4-CH₃C₆H₄SO₂- group in its molecule is known as the p-toluenesulfonyl group (tosyl group), often abbreviated as Ts or Tos.
| Items | Technical grade | Pharma grade | Refine grade | Reagent grade | Electronic grade |
| Assay (as C7H8O3S·H2O)≥% | 93.0 | 95.0 | 97.0 | 99.0 | 99.9 |
| Free acid (as H2SO4) ≤% | 3.0 | 2.0 | 0.7 | 0.1 | 0.03 |
| Moisture≤% | 4.0 | 3.5 | 2.3 | 0.9 | 0.1 |
| Fe content≤ppm | 50 | 30 | 20 | 10 | 1 |
| Residue on ignition ≤% | / | 0.2 | 0.2 | 0.02 | 0.02 |
| Dissolve test of ethanol | / | Qualified | Qualified | Qualified | Qualified |
| Dissolve test of water | / | Qualified | Qualified | Qualified | Qualified |
| Main metal ions ≤ppm | / | / | / | / | 1 |
-P-Toluenesulfonic Acid is commonly used as a catalyst in organic synthesis due to its high catalytic activity and good selectivity.
-It participates in a variety of important reactions, such as Friedel-Crafts alkylation and acylation, Diels-Alder reaction, and Heck reaction.
-In the pharmaceutical industry, it is used in synthetic processes such as transesterification, carboxylation, and acetalization.
-In the coatings industry, P-Toluenesulfonic Acid is used as a catalyst to accelerate the curing process of coatings.
-In the plastics and polymers industry, it participates in polymerization reactions and improves polymer properties.
-It is also used as a descaling agent in metal cleaning, an additive in electroplating baths, and a neutralizing agent in acrylonitrile production.
-P-Toluenesulfonic Acid acts as a catalyst and sulfonating agent in dye synthesis, promoting dye formation.
-It aids in the production of water-soluble dyes and dye intermediates, improving dye color fastness and the overall quality of textiles.
-The sulfonation ability of P-Toluenesulfonic Acid enables the production of anionic surfactants with excellent cleaning and foaming properties.
-These surfactants are widely used in household and industrial cleaning products.
Standard package: 25kg/drum
Sample is also avaliable, provide customized package for different quantity.
Shipping: by express DHL,FEDEX,TNT.....by Sea or by Air, accoring to client's request.
Delivery time: 7 working days after receiving your deposit.
Payment: T/T,western union,moneygram or as your requirement.
