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Help CenterManufacturer Food Grade Sodium Metabisulfite Used as Preservative
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Sodium Metabisulphite (SMBS)
is mainly used as reduction agent. Furthermore, it is ideal for the bleaching of vegetable fibers and textile, for the production of solutions, which are used in the developing of photos and films as well as for the treatment of tanning agents in dyeing of textiles. ChoiceChem offers different sodium metabisulfite grades, all meeting highest quality standards.
CAS RN.: | 7681-57-4 |
EINECS: | 231-673-0 |
H.S.CODE: | 2832.1000.00 |
Chemical Analysis
Component | Range | Typical |
Assay(Na2S2O5 ) | 96.0% min. | 97.5% |
Iron content(base on Fe) | 0.005% max. | 0.002% |
water insoluble matter | 0.05% max. | 0.02% |
Arsenic content(base on As) | 1 ppm max. | 1ppm |
Pb | 10 ppm max. | 5ppm |
Appearance | White or yellowish crystalline powder | |
Application
Industrial Uses | |
Water Treatment | Eliminating dissolved oxygen in waste water and in pipes;Cleaning water pipes and reverse osmosis membranes in desalinization equipment as it is an antibacterial.It is used in water treatment plants to remove excess chlorine. |
Bleaching Agent | It functions as a bleaching agent, which is useful in making paper pulp, cotton and wool. |
Food Preservative | |
Antimicrobial | It is commonly used as a food preservative for dried foods, as well as fruit concentrate juices. It acts as an antimicrobial, inhibiting the growth of fungi and bacteria, thereby keeping food fresh and safe. |
In beer and wine manufacturing, it is used as both a sterilizer and an antioxidant in the process of brewing beer or fermenting wine. | |
Other Uses |
|
Medicinal | It is an antioxidant additive in inject able medicines and is also used as a reducing agent in pharmaceuticals. |
Photographic and film industry | For preparing developer solutions, for acidifying fixing baths(photo grade). |
Landscape Gardening | It used in landscape gardening as a tree stump remover, as it disintegrates the lignin -- chemicals in plant cell walls -- in the tree stumps, making them easier to remove. |
Fiber Industry | In the sulphitisation of tanning extract. |
Gold mining | For bleaching ground wood, as an antichlor. |
Transportation Information:
DOT Classification: | Non-dangerous goods |
U.N. | N/A |
Packing Group: | N/A |
Storage & Transportation
Not allowed in room with any oxidant or strong acid, and keep away from an oxidation by air or humidity. |
This product should NOT store for long time. DO NOT mix with inflammable substances, gasoline and oxidants. |
During transportation, keep away from direct sunlight and humidity. |
Packing
In net 25kg / 1000kg / 1100kg / 1200kg / 1250kg pp bags
- 25MT/20 FCL
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