Sodium hydrosulfite
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Molecular Formula: NaNO2
CAS NO.: 7632-00-0
HS Code： 2834100000
UN No. ： 1500
Hazard category ： 5.1
EINECS No. ： 231 -555-9
Property: White or a little buff fine crystal. The relative molecular weight is 69.0 and density is 2.168. It’s no smell and a little saline taste, easy to be deliquescence and to dissolve in water. The melting point is 271℃ and decomposition temperature is 320℃. It has the strong oxidizing property, as well as reducing property.
Usage: This product is mainly used as raw material for manufacturing nitro compounds, azo dyes, etc., as mordant and bleach for fabric dyeing, as well as metal heat treatment agent, electroplating corrosion inhibitor, and as instrument disinfection and antiseptic in medicine. Cement early strength agent, antifreeze, etc. It is mainly used in pharmaceutical and chemical industries.
| ITEM | Best quality | First quality | Qualified quality |
| Content of sodium nitrite（calculated by dry base) %≥ | 99.0 | 99.0 | 98.5 |
| Moisture %≤ | 1.2 | 1.4 | 2.0 |
| Content of chloride(NaCl)（calculated by dry base) %≤ | 0.10 | 0.17 | - - |
| Content of insolubles in water（calculated by dry base) %≤ | 0.05 | 0.05 | 0.10 |
| Content of sodium nitrate（calculated by dry base) %≤ | 0.08 | 0.8 | 1.0 |
| Apperance of product | White fine crystal | ||
| Package and Trade mark | By woven plastic bag out , and white plastic bag inner | ||
Notice:
(1) This product shall be stored in the place where keep ventilation and dry against rain, heated and insolation under sunlight.
(2) This product shall not be delivered or stored together with strong reducing agent, inflammable and detonatable substances, foods, feed, and additives.
(3) This product is venomousness. Please keep it safely. Don’t eat it mistakenly.
CAS NO:7775-14-6
EC NO:231-890-0
Molecular Formula:Na2O4S2
Molecular Weight:174.1071
Synonyms:;Sodium dithionite hydrate;Sodium hydrosulphite;Sodium dithionite;disodium dithionite;
Molecular Structure:
CAS NO:7775-14-6
EC NO:231-890-0
Molecular Formula:Na2O4S2
Molecular Weight:174.1071
Synonyms:;Sodium dithionite hydrate;Sodium hydrosulphite;Sodium dithionite;disodium dithionite;
Molecular Structure:
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