Para Toluene Sulphonic Acid also known as PTSA which is an organic compound with the formula CH3C6H4SO3H.

Presence of starch derivatives absent

Sr No.	Particular	Limit	Results
1	Appearance	White to off white light pink crystalline solid	White crystalline solid
2	Assay on Monohydrate Basis (%)	98.5 min	99.1
3	Free Sulphuric Acid (%)	0.5% max	0.10
4	Total Moisture (%)	12.0 max	11.73

It is widely used in Industries. however some specific applications are given below