PTSA 70-55-3

Category :

Organic chemicals and Derivatives

CAS NO :

70-55-3

EC NO :

200-741-1

MF :

C₇H₉NO₂S

MW :

171.2169

Product description :

English name: P-Toluene Sulfonic acid (short for PTSA)
Aliases: p-methylbenzenesulfonic acid, p-toluenesulfonic acid-hydrate, 4-methylbenzenesulfonic acid
Molecular formula: C₇H₈O₃S•H₂O
Molecular weight: 190.2
CAS number: 104-15-4, 6192-52-5 (p-toluenesulfonic acid-hydrate)
Implementation standard: Q/HXY 006-2016
EINECS No.: 203-180-0 UN NO.: 2585
HS Code: 2904100000
Product technical indexes are as follows:

Item/Indexes	Mother liquor	Crude	Industrial Grade	Pharmaceutical Grade	Refined Grade	Reagent grade
Total acidity ≥% (as sulfonic acid)	40-65	90	93/95	95/97	98/99	98/99
Free acid ≤%	20-40	3-6	3/2.5	2.5/ 0.7	0.5/0.3	0.3/0.1
Moisture (excluding crystal water) ≤%	/	4-12	4/3	3/2.5	1.5/1	1
Fe++ ≤ppm	/	/	50	30/20	20/ 10	10
Residue on ignition ≤%	/	/	/	0.2	0.2	0.02
Melting point (℃)	/	/	/	/	100	10 3
Ethanol dissolution test	/	/	/	qualified	qualified	qualified
Water solubility test	/	/	/	qualified	qualified	qualified
Color	Yellow and black	gray white	white	white	white	white
Can be customized according to customer requirements Can be produced according to customer requirements

Packaging: It is divided into Chinese, English, blank and other packaging. The inner packaging is a double-layer film bag, and the outer packaging is: plastic woven, kraft paper, cardboard barrel, etc., with a net weight of 25 kg. Various types of packaging can be customized according to user needs.

The main purpose:

1. It is an important raw material for the synthesis of doxycycline, dipyridamole, amoxicillin, cefadroxil intermediates, etc. in medicine.

2. Widely used as a catalyst in organic chemical synthesis (such as ester products, textile auxiliaries, photographic films, electronic products, new materials, etc.).

3. It is widely used as a curing agent in resin, coating, artificial board, casting, paint and other industries, with fast curing speed and no discoloration of the paint film.

4. Widely used in chemical synthesis such as medicine and pesticides.

5. Used as a catalyst in electronics, new polymer materials, flavors and fragrances, and daily chemical products.

Synonyms :

PASAM;p-Toluenesulphonamide;Para-Toluene Sulfonamide;Ortho Para-Toluene Sulfonamide;P-TOLUENE SULFONAMIDE;P-toluene sulfonylamine;Photoinitiator-6105l;Toluene-4-sulphonamide;4-Toluene sulfonamide;4-Methylbenzenesulfonamide;PTSA;Toluene-4-sulfonamide;p-Toluenesulfonylamide;P-toluene Sulfonamine(PTSA);

Molecular Structure :

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