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7775-14-6
Industrial grade
Na2O4S2
173.90300
2831101000
Sodium dithionite
Sodium sulfoxylate; Sodium hypodisulfite;Dithionous acid,disodium salt; Sodium dithionite;
Chemical Name | Sodium Dithionite |
CAS No. | 7775-14-6 |
Molecular Formula | Na2O4S2 |
Molecular Weight | 173.90300 |
Packing:50KG/DRUM,450DRUM,22.5MT/20GP
Product name: | Sodium Hydrosulfite 88PCT grade | Batch Number | 20211228 | |
Manu.date | 2021.12.28 | standard | HG/T 2074-2011 | |
Quantity | 112.50MT | Validity date | 12 Months after the production date | |
Index | Specification | Result | ||
88 PCT | Lot No. 21122828 | |||
Appearance | White crystalline powder | White crystalline powder | ||
odor | Odorless or with a slight odor of sulfur dioxide | Odorless or with a slight odor of sulfur dioxide | ||
Na2S2O4 （%） | 88 min | 88.4 | ||
Na2S2O5 （%） | 5-7 | 6.1 | ||
Na2CO3 (%) | 0.9-5.0 | 3.2 | ||
Water Insolubles （%） | 0.05 max | 0.04 | ||
Test Conclusion :Qualified excellent grade | ||||
2、Chemical properties
Its aqueous solution is unstable and has strong reducibility, which is a strong reductant. Exposure to the air is easy to absorb oxygen and oxidation, but also easy to absorb moisture fever and metamorphism, and can seize the oxygen in the air agglutination and a stimulating sour taste.
Safety term
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 ... (to be specified by the manufacturer).
S43：In case of fire, use ... (if water increases the risk, add - never use water).
Risk term
R7：May cause fire.
R22：Harmful if swallowed.
R31：Contact with acids liberates toxic gas.
Storage precautions:
Store in a cool, ventilated warehouse. The relative humidity is kept below 75%. Packing should be sealed and out of contact with air. It should be stored separately with oxidizer, acid and combustible materials, and must not be mixed. Explosion-proof lighting and ventilation facilities are adopted. Do not use mechanical equipment and tools that may cause sparks. The storage area shall be equipped with suitable materials to accommodate leaks.
Chemical Name | Sodium Dithionite |
CAS No. | 7775-14-6 |
Molecular Formula | Na2O4S2 |
Molecular Weight | 173.90300 |
Packing:50KG/DRUM,450DRUM,22.5MT/20GP
Product name: | Sodium Hydrosulfite 88PCT grade | Batch Number | 20211228 | |
Manu.date | 2021.12.28 | standard | HG/T 2074-2011 | |
Quantity | 112.50MT | Validity date | 12 Months after the production date | |
Index | Specification | Result | ||
88 PCT | Lot No. 21122828 | |||
Appearance | White crystalline powder | White crystalline powder | ||
odor | Odorless or with a slight odor of sulfur dioxide | Odorless or with a slight odor of sulfur dioxide | ||
Na2S2O4 （%） | 88 min | 88.4 | ||
Na2S2O5 （%） | 5-7 | 6.1 | ||
Na2CO3 (%) | 0.9-5.0 | 3.2 | ||
Water Insolubles （%） | 0.05 max | 0.04 | ||
Test Conclusion :Qualified excellent grade | ||||
2、Chemical properties
Its aqueous solution is unstable and has strong reducibility, which is a strong reductant. Exposure to the air is easy to absorb oxygen and oxidation, but also easy to absorb moisture fever and metamorphism, and can seize the oxygen in the air agglutination and a stimulating sour taste.
Safety term
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 ... (to be specified by the manufacturer).
S43：In case of fire, use ... (if water increases the risk, add - never use water).
Risk term
R7：May cause fire.
R22：Harmful if swallowed.
R31：Contact with acids liberates toxic gas.
Storage precautions:
Store in a cool, ventilated warehouse. The relative humidity is kept below 75%. Packing should be sealed and out of contact with air. It should be stored separately with oxidizer, acid and combustible materials, and must not be mixed. Explosion-proof lighting and ventilation facilities are adopted. Do not use mechanical equipment and tools that may cause sparks. The storage area shall be equipped with suitable materials to accommodate leaks.
