Description:
Product name: P-toluenesulfonic Acid
Formula:C7H8O3S·H2O
CAS No.:104-15-4
EINECS No.:203-180-0
UN. Code: 2585
Characters:
Colorless crystal,density@1.34g/cm3,melting point@102-105℃,boiling point@140℃, easily soluble in ethyl alcohol and diethyl ether;lightly soluble in water and hot benzene
Technical Data:
| Item/index | Industrial Grade | Medical Grade | Refined Grade | Reagent Grade |
| Total acidity ≥%(sulfonic acid) | 93 | 95 | 97 | 99 |
| Free acid ≤% | 3 | 2 | 0.7 | 0.1 |
| Moisture(not includingcrystal water )≤% | 4 | 3 | 2.3 | 0.9 |
| Fe++ ≤ppm | 50 | 30 | 20 | 10 |
| Ignition residue ≤% | / | 0.2 | 0.2 | 0.02 |
| Melting point(oC) | / | / | / | 102-105 |
| Ethanol solubility expenriment | qualified | qualified | qualified | qualified |
| Water solubility expenriment | qualified | qualified | qualified | qualified |
Application:
Used in the synthesis of doxycycline (hydrogen,. Yi doxycycline and Lynn doxycycline etc.), dipyridamole, amoxicillin, cephalosporins hydroxylamine benzyl D860 pharmaceutical intermediates and other important raw materials; 2. Used in organic chemical industry.In acrylate, textile auxiliaries, photographic film, polymerization of stabilizer and organic synthesis catalyst (esters);In resin, paint, man-made board, casting, paint and other industries; 3. Used as curing agent, and fixed speed, the film does not change color;Is also a synthetic ethoxy quinoline important raw materials; 4. Used in pesticide synthesis industry (dicofol) chloramine T, paint;Cli acid, etc.