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CAS NO.7681-57-4
| Sodium metabisulfite Basic information |
| Product Name: | Sodium metabisulfite |
| Synonyms: | disodiummetabisulfite;disodiumpyrosulphite;fertisilo;metabisulfitedesodium;Sodiummetabisufite;sodiummetabisulfite(na2-s2o5);sodiumpyrosulfite(na2s2o5);Sodium dissulfite |
| CAS: | 7681-57-4 |
| MF: | 2Na.O5S2 |
| MW: | 190.11 |
| EINECS: | 231-673-0 |
| Product Categories: | INORGANIC & ORGANIC CHEMICALS;Inorganics;inhibitor and freshen agent |
| Mol File: | 7681-57-4.mol |
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| Sodium metabisulfite Chemical Properties |
| mp | 150 °C |
| density | 1.48 |
| storage temp. | Store at RT. |
| solubility | 540 g/L (20°C) |
| Water Solubility | 540 g/L (20 ºC) |
| Merck | 14,8638 |
| Stability: | Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive. |
| CAS DataBase Reference | 7681-57-4(CAS DataBase Reference) |
| EPA Substance Registry System | Disulfurous acid, disodium salt(7681-57-4) |
| Safety Information |
| Hazard Codes | Xn,Xi |
| Risk Statements | 22-31-41-36/37/38-52 |
| Safety Statements | 26-39-46-36 |
| RIDADR | 3260 |
| WGK Germany | 1 |
| RTECS | UX8225000 |
| PackingGroup | III |
| Hazardous Substances Data | 7681-57-4(Hazardous Substances Data) |
7681-57-4
Chemical Formular: Na2S2O5
CAS NO: 7681-57-4
HS Code: 2832.10.00
Quality indicators of sodium metabisulphite:
|
Sodium Metabisulfite |
|||
|
Items |
Industrial Grade HG/T2826-2008 |
Food Grade GB1893-2008 |
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Top grade |
First grade |
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Na2S2O5 |
96.5%min. |
95.0%min. |
96.5%min. |
|
Fe |
0.005%max. |
0.010%max. |
0.003%max. |
|
Clarity |
- |
- |
Pass the test |
|
Heavy metal(by Pb) |
- |
- |
0.0005%max. |
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Arsenic (As) |
0.0001%max. |
- |
0.0001%max.
|
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Water insolubles |
0.05%max. |
0.05%max. |
- |
Application of sodium metabisulphite:
Food grade:
Bleaching agent (e.g.candies, cake, bamboo shoots, etc);
Loosening agent (e.g.bread, cracker etc);
Antiseptic and germicide (e.g.fruit juice, tinned food brews, the cereals food is defended storage etc);
Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc);
Industrial grade:
Mordant of printing and dyeing;
Dechlorinate of textile after bleaching;
Sulphonated agent and reducer of chemical industry and pharmacy;
Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water;
Rubber solidifying agent;
Perfume industry is served as hydrocarbon perfume aldehyde;
The hide profession employ to do to molt dose and pliable dose and wearproof dose;
The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment.
Storage:
Store the product in a cool and dry place, prevent from direct sunlight ,water and moisture, avoid contact with strong acid,oxidants or poisonous substances. Exposure to moisture will make it oxidze easily to sodium sulphate. Do not store it for long time.
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