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Factory Supply Sodium Metabisulfite Na2S2O5, White Powder Sodium Metabisulphite, SMBS
| Product Name | Sodium Metabisulfite |
| Appearance | White Powder |
| Formula | Na2S2O5 |
| Purity | 96%-97% |
| CAS No. | 7681-57-4 |
| HS CODE | 2832100000 |
| Storage | Store in a segregated and approved area |
| Usage | Leather Treatment/Dyeing and Painting industry/Antiseptic/Bleach/loose agent |
Sodium metabisulfite is white or yellow crystalline powder or small crystal, with a strong SO2 odor, soluble in water, the aqueous solution is acidic, when contacted with strong acid, SO2 is released to form corresponding salts, and it is oxidized to Na2S2O6 when placed in the air for a long time. Therefore, the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.
| Item | Specification | Test |
| CONTENT(AS Na2S2O5): | 97%min | 97.5% |
| HEAVY METAL(Pb): | 0.0005%max | 0.0002% |
| IRON (Fe): | 0.005%max | 0.004% |
| ARSENIC(As): | 0.0001%max | 0.00007% |
| WATER INSOLUBLE: | 0.05%max | 0.04% |
| CLARITY: | PASSES TEST | QUALIFIED |
| Appearance | WHITE CRYSTALLINE FINE PARTICLES | |
| Industrial Grade Sodium Metabisulfite | ||
| Item | Specification | Result |
| Na2S2O5 | 96.5%Min | 97.18% |
| SO2 | 65.0%Min | 65.53% |
| Fe | 0.003%Max | 0.002% |
| As | 0.0001% Max | 0.0001% |
| Water Insoluble Matter | 0.05% Max | 0.01% |
(1) Food Grade: Bleach agent (e.g. candies, cake, bamboo shoots, etc); Loose 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).
(2) Industry 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 Stap; Treatment agent of waste water; Rubber solidifying agent Perfume industry is served as hydro carbon perfume aldehyde. The hide profession employ to do to molt dose and pliable dose and wearproof dose; sewage treatment, and so on .
(3) Pharmaceutical Grade: In chemical synthesis in the production of acrylic fibre, vitamin K, vitamin A, pharmaceutical intermediates, etc.
(4) Photo Grade: The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose.
For sodium metabisulfite, please only contact to
Bella Cheng
E-mail: sales08@yixinchemical.com
WhatsApp/Wechat: 0086 15705596714