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
