1. Color: white crysallized power,irregular particle 2. Absorbent: highly absorbent property 3. Boiling point: 400°C(vacuum) 4. Fusion point: 36°C 5. Attention: resovled in wet air, disssovled in water, ammonia and amine 6.Usage: used as reducing agent, making medincine, compound of organicmedicals and fine chemical products 7. Packing: three layers of packing,internal packing applies brown paper with inner lining of polyethylene film bag and external packing applies special seal head open metal pail 8. Execution Standard: HG/T 3584