| CAS No.: | 7681-57-4 |
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| Formula: | Na2s2o5 |
| EINECS: | 231-673-0 |
| Certification: | ISO |
| Purity: | 90%~99% |
| Type: | Sodium Sulfate |
| Samples: |
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| Customization: |
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Chemical name
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Sodium Metabisulfite
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Molecular Formula
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Na2S2O5
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CAS
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7681-57-4
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Character
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White or yellow crystalline powder or small crystalline, with a strong smell of sulfur dioxide, it is soluble in water.
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Applications
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In food industry, it is used as bleaching agents, preservatives, loosen agents, antioxidants, color protecting agents and preservatives.
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The Doctor industry is used for the production of chloroform, phenylpropane and benzaldehyde.
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The rubber industry is used as a coagulant.
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The printing and dyeing industry is used as a dechlorination agent for cotton bleaching and a cotton cooking agent.
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Tannery industry for leather treatment, can make leather soft, plump, tough, with waterproof, anti - folding, wear resistance and other properties.
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| Classification: | Sulphate | Type: | Sodium Metabisulfite |
| CAS No.: | 7681-57-4 | Other Names: | Sodium Metabisulphite, SMBS, Sodium pyrosulfite |
| MF: | Na2S2O5 | EINECS No.: | 231-673-0 |
| Place of Origin: | Hunan, China | Grade Standard: | Agriculture Grade, Food Grade, Industrial Grade, Reagent Grade |
| purity: | 97%min | Appearance: | White Powder or Yellow crystalline powder |
| Application: | Water, Dyeing, Gold, food, Photography... | Brand Name: | Choice Chem |
| Model Number: | Sodium Metabisulphite | Product name: | Sodium Metabisulphite SMBS |
| Smell: | strong smell of sulfur dioxide | Content: | 97%min |
| SO2: | 66.8% | Fe: | 0.0015 |
| Pb: | 0.0002 | As: | 0.0001 |
| Water soluble: | 20°C, 54g/100ml water | Usage 1: | Raw materials of sodium hydrosulfite and caprolactam |
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Chemical Analysis- Sodium metabisulphite Food Grade
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Component
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Standard
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Result
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Appearance
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white or yellowwish crystalline powder
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Confirm
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Content
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≥96.5%
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97.50%
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Fe
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≤0.003
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0.0015
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Clarity
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Clarify
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confirm
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Pb
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≤0.0005
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0.0002
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As
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≤0.0001
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0.0001
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SO2
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>65%
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66.8%
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PH Value
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4.0-4.6
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4.3
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Water soluble
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20ºC,54g/100ml water
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Confirm
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| Fruits & Vegetables preservatives Sodium metabisulphite chipwhite |
| 1.Sodium metabisulphite |
| 2.Fruits preservatives |
| 3.Vegtable preservatives |
1. All raw materials must be inspected prior to transferring to warehouse. 2. With regarding to the incoming materials which are not able pass the incoming inspection. Engineers will evaluate its quality and decide if they could be used for production or need to be returned to suppliers. 3. With regarding to NG materials, SQE organizes MRP meeting with suppliers and request them for 8D report and improvement plan. SQE |
1. Monitor equipment temperature and other index every 2 hrs, keep result in record.
2. Assign staff for each shift to record the equipment working status. It is requested to stop production machine working once abnormal condition found.
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1. Randomly pick out 5 pcs samples for final inspection for each batch, and only they all passed, then can be moved to qualified area.
2. If NG products found, put them at unqualified area, and let R&D department, production team and QC team review together for sorting out root cause and arranging improvement action plan. NG
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