Product name :P-toluene sulfonic acid
CAS NO.:108-78-1
H.S.Code:2904100000
MF:C7H8O3SH2O
EINECS No.:203-180-0
Appearance:white powder
P-toluene sulfonic acid
Technical Parameters
|
Item/Index |
Industrial grade |
Pharmaceutical grade |
Refining grade |
Reagent grade (chemical pure) |
|
Content(C7H8O3S·H2O) ≥% |
93.0 |
95.0 |
97.0 |
99.0 |
|
Free acid(H2SO4) ≤% |
3.0 |
2.0 |
0.7 |
0.1 |
|
Moisture(crystal water)≤% |
4 |
3 |
2.3 |
0.9 |
|
Iron(Fe++) ≤ppm |
50 | 30 |
20 |
10 |
|
Ignition residue ≤% |
/ |
0.2 |
0.2 |
0.02 |
|
Melting point(°C) |
/ |
/ |
/ |
102-105 |
|
Alcohol solution test |
/ |
qualified |
qualified |
qualified |
|
Water solution test |
qualified |
qualified |
qualified |
qualified |
Application
- 1. Used as an important raw material for the synthesis of doxycycline, dipyridamole, amoxicillin, cefadroxil intermediate, etc.
- 2. Widely used as a catalyst for reaction in organic chemical synthesis (such as ester products, textile auxiliaries, photographic film, electronic products, new materials, etc.).
- 3. Widely used as a curing agent in resins, paints, wood-based panels, foundry, paints, etc.. The curing speed is fast, and the paint film does not change color.
- 4. Widely used in chemical synthesis such as medicines and pesticides.
- 5. Catalytic use in electronics, polymer new materials, flavors and fragrances and daily chemical products.
Package
25kg plastic woven bag / 25kg drum or as requirements
