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| Place of Origin: | Hunan |
| Brand Name: | Kemsky |
| Certification: | ISO 9001 SGS |
| Model Number: | vegetable preservative sodium sulfite |
| Minimum Order Quantity: | 1 metric ton |
|---|---|
| Price: | usd 430 per metric ton |
| Packaging Details: | 25 kgs bag,1000 kgs big bag |
| Delivery Time: | 5-8 days |
| Payment Terms: | T/T , L/C |
| Supply Ability: | 3000 tons per month |
| Name: | Vegetable Preservative Sodium Sulfite | Other Name: | Anhydrous Sodium Sulphite Vegetable Preservative |
|---|---|---|---|
| Shelf Life: | 24 Months | Usage: | Preservative For Vegetable And Fruit |
| Packing: | 25 Kgs Plastic Woven Bag | CAS NO: | 7757-83-7 |
| Highlight: | sodium sulfite anhydrous,sodium sulfite preservative |
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SODIUM SULPHITE
SODIUM SULFITE ANHYDROUS
FOOD AND TECH GRADE
PRESERVATIVE FOR VEGETABLE AND FRUIT
96% Anhydrous Sodium Sulfite Na2SO3
1,Stable quality and reasonable price
2,Hot-sell in the global market
3,SGS,BV,CIQ.
96% Anhydrous Sodium Sulfite Na2SO3
Appearance: white crystal or powder
Density (g/cm3): 1.561
Solubility: Soluble in water, water solution is alkaline. indissolvable in ethanol
Specification:
| ITEMS | Premium grade | ||
| Super grade | First grade | Salable product | |
| Sodium sulfite ( Na2SO3 ) , % ≥ | 97.0 | 96.0 | 93.0 |
| Fe , ≤ | 0.003 | 0.005 | 0.01 |
| Water insoluble matter , % ≤ | 0.02 | 0.03 | 0.05 |
| Free alkali ( as Na2SO3 ) , % ≤ | 0.10 | 0.40 | 0.60 |
| Na2SO4 , % ≤ | 2.50 | / | / |
| NaCl , % ≤ | 0.10 | / |
/
|
Application:Used in artificial fiber stabilizer, fabric bleach, photographic contrast extravasation, dye bleaching deoxidizer, spices and dye reductant, paper lignin removal agent.
Basic information
| Product Name: | Sodium sulfite |
| Synonyms: | Sodium sulfite anhydrous;SODIUM SULFITE, EXSICCATED;SODIUM SULPHITE;anhydroussodiumsulfite;disodiumsulfite;exsiccatedsodiumsulfite;natriisulphis;natriumsulfid |
| CAS: | 7757-83-7 |
| MF: | Na2O3S |
| MW: | 126.04 |
| Product Categories: | Inorganic Chemicals;Inorganics;Water Ttreatment Chemicals;Analytical Reagents for General Use;Disulfide Bridge Cleavage Reagents;Denaturation;Synthetic Reagents;ACS GradeBiochemicals and Reagents;Synthetic Reagents;inorganic compound;Paper, glass, printing and dyeing |
| Mol File: | 7757-83-7.mol |
Packing : External packing is PP woven bag, Internal packing is PE bag,25 kgs, 50 kgs, 1000 kgs, and 1250 kgs bag packing.
Storage & defence: Stored in cool and dry place, avoid moisture and heat. No breakage, No mixed with oxidant and toxic matter. The storage period is 6 month since the production date. It should be transported by clean car, with covering matter, avoid rain.
Physical and chemical properties:
White crystalline or powder form; triangular prism crystal shape; alkaline water solution with pH at 9 – 9.5; The highest water solubility is about 28% with temperature at 33.4°C. When exposed to air, it is oxidized to form sodium sulfate. When heated to high temperature, it decomposes to form sodium sulfide; Density: 2.633(15.4°C), Refractive Index: 1.565; Molecular Weight: 126.04.
| Chemical Properties |
| melting point | 500 °C |
| density | 2.63 |
| refractive index | 1,484 |
| storage temp. | Store at RT. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| Water Solubility | 23 g/100 mL (20 ºC) |
| Sensitive | Hygroscopic |
| Stability | Stable. Incompatible with strong acids. Moisture and air sensitive. |
Technical specification
|
Specification Index name |
Analytically pure-AR | Chemical pure-CP | High purity |
| Content(Na2SO3) | ≥97.0 | ≥95.0 | ≥96.0 |
| Clarity test | Qualified | Qualified | |
| Water insoluble | ≤0.005 | ≤0.01 | ≤0.03 |
| Sulphurous acid( counted by Na2HSO3 ) | Qualified | Qualified | |
| Free alkali( counted by Na2CO3 ) | ≤0.1 | ≤0.3 | ≤0.5 |
| Chloride(Cl) | ≤0.005 | ≤0.02 | ≤0.05 |
| Thiosulfuric acid(S2O3) | ≤0.01 | ≤0.02 | ≤0.04 |
| Ferrum(Fe) | ≤0.0005 | ≤0.002 | ≤0.003 |
| Heavy metal(counted by Pb) | ≤0.001 | ≤0.002 | ≤0.003 |
| Arsenic(As) | ≤0.0001 | ≤0.0005 | ≤0.001 |
Specification:
| Anhydyous sodium sulphite | ||||||
| English name | Anhydyous sodium sulphite | |||||
| Molecular formula | Na2SO3 | |||||
| Technical specifications | High purity grade | Refined grade | Photographic grade | Industrial grade | Industrial grade | Industrial grade |
| Sodium sulfite | Sodium sulfite | Sodium sulfite | High-class product | High-class product | First grade product | |
| Na2SO3 ≥ % | 98 | 98 | 97 | 98 | 97 | 96 |
| Fe ≤ % | 0.0005 | 0.002 | 0.005 | 0.003 | 0.003 | 0.005 |
| Water insoluble ≤ % | 0.005 | 0.01 | 0.05 | 0.02 | 0.02 | 0.03 |
| Free alkali ≤ % | 0.1 | 0.3 | 0.15 | 0.1 | 0.1 | 0.4 |
| Sodium sulfate ≤ % | 1.5 | 1.5 | — | 1.5 | 2.5 | — |
| Sodium chloride ≤ % | 0.005 | 0.02 | — | 0.01 | 0.1 | — |
| Heavy metal on Pb≤ % | 0.001 | 0.002 | 0.002 | — | — | — |
| As ≤ % | 0.0001 | 0.0005 | — | — | — | — |
| Sodium thiosulfate ≤% | 0.01 | 0.02 | 0.03 | — | — | — |
| Aqueous solution appearance | Qualified | Qualified | Qualified | — | — | — |
| Reaction of silver nitrate ammonia solution | — | — | Qualified | — | — | — |
When producing Sodium sodium metabisulfite(SMBS), during the manufacture process there is SO2 gas can come from sulphur, pyrite, hydrogen sulfide incineration or other tail gas problem and waste treatment control .
Contact Person: Mrs. Kim Xie
Tel: +8613975090964
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