Sodium Dithionite
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Category：Chemical Additives Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
CAS 7775-14-6,
| Name | Sodium hydrosulfite |
| Synonyms | burmol blankit HYDROSULFITE Sodium dithionite SODIUM DITHIONITE disodium dithionite SODIUM HYDROSULFITE Sodium hydrosulfite SODIUM HYDROSULPHITE SODIUM HYPODISULFITE Sodium hydrosulphite Sodium dithionite hydrate dithionous acid disodium salt |
Physico-chemical Properties
| Molecular Formula | Na2O4S2 |
| Molar Mass | 174.11 |
| Density | 2.13 |
| Melting Point | 300 °C |
| Boling Point | 1390°C |
| Flash Point | >100°C |
| Water Solubility | 250 g/L (20 ºC) |
| Solubility | 250 g/L (20°C) |
| Appearance | Powder/Solid |
| Color | White |
| Merck | 14,8626 |
| PH | 5.5-8.5 (50g/l, H2O, 20℃) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable, but air sensitive. Incompatible with strong acids, strong oxidizing agents, water, moisture. |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | Properties white crystalline powder. relative density 2.3~2.4 solubility: it is very soluble in water but insoluble in alcohol. |
| Use | Mainly used as printing and dyeing reducing agent, Pulp, hemp, oil and other bleaching agents, and for pharmaceutical, Analytical reagents, etc |
Risk and Safety
| Hazard Symbols | Xn – Harmful |
| Risk Codes | R7 – May cause fire R22 – Harmful if swallowed R31 – Contact with acids liberates toxic gas |
| Safety Description | S26 – In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 – After contact with skin, wash immediately with plenty of soap-suds. S43 – In case of fire use … (there follows the type of fire-fighting equipment to be used.) S7/8 – S43E – S28A – |
| UN IDs | UN 1384 4.2/PG 2 |
| WGK Germany | 1 |
| FLUKA BRAND F CODES | 1-10 |
| TSCA | Yes |
| HS Code | 28311010 |
| Hazard Class | 4.2 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 2500 mg/kg |
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