| CAS Number | 95-71-6 |
| Appearance | white to off-white crystals |
| Content | 99.0%Min |
| Melting point | 126 °CMin |
| Usage | An effective polymerization retarder and inhibitor for acrylonitrile and vinyl monomers, and a useful antioxidant for. oleate and linseed oil, etc. Also, used as a component of photographic developers and an intermediate of photographic agents. |