| CAS No. | 135-53-5 |
| Molecular Formula | C10H7NaO5S |
| Molecular weight | 240.3 |
| Structure | ![]() |
| EINECS | 205-198-4 |
| Appearance | Grey white powder |
| Purity | ≥99% |
| Moisture | ≤0.5% |
| Iron | 10PPM |
| PH value | 3-7 |
| Uses | mainly used as coupling agent for diazo photosensitive paper, also used as food additive, etc. |
| Packing | 25kg fibre drum lined with plastic bags |