Paratoluene Sulfonic Acid
Paratoluene Sulfonic Acid
Para Toluene sulfonic acid (PTSA or pTsOH) 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 CH3C6H4SO2– group is known as the tosyl group and is often abbreviated as Ts or Tos. Most often, TsOH refers to the monohydrate, TsOH.H2O. it finds use in organic synthesis as an “organic-soluble” acid catalyst. Examples of uses include: Acetalization of an aldehyde, Esterification of carboxylic acids and Transesterification of an ester.
| Product Name | P-Toluene Sulfonic Acid - Monohydrate |
| Synonyms | 4-Methylbenzene-1-sulfonic acid 4-Methylbenzenesulfonic acid Tosylic acid Tosic acid PTSA |
| Molecular Formula | CH3C6H4SO3H.H2O |
| Molecular Weight | 190.20 g/mol |
| CAS No | 104-15-4 / 6192-52-5 |
| Purity (%) | 99 / 70 / 65 |
| Acidity | Less than 0.1% / 2.9 % Max in HS / 1% Max in LS |
Applications :
- Used as a catalyst in the following processes:
- Used as Intermediate in
- As a curing agent in bulk quantities in thermosetting resin systems, varnishes, acrylic resins, foundry resins.
- As a neutralizing agent for acrylonitrile production.
- Used in paints, paper chemicals, API, detergent, cosmetics.
- Anionic surfactants (clear liquid detergent, luxury shampoo).
- Performance additives for paint & coating.
- Esterification /condensation /acetylation / polymerization/ alkylation/ hydrolysis /dehydration.
- Also applicable for use in food packaging adhesives.
Cross linking reactions
Ethly Acetate, Butyl Acetate
Plasticizer manufacturing DOP, DBP, DEP
Unsymmetrical benzils
Highly substituted piperidines
1,3,5-Trisubstituted benzenes by trimerization of alkynes
Triazoloquinazolinone and benzimidazoquinazolinone derivatives
Selenated ketene dithioacetals
Coating industry
Electronic polymers
Fine chemical manufacture
Dye/pigment
Metal working
Pharmaceutical intermediates (tetra cycline drugs, antiviral)