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| Place of Origin: | Hunan |
| Brand Name: | Kemsky |
| Certification: | ISO 9001 SGS |
| Model Number: | sodium sulfite food grade and tech grade |
| 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: | Sodium Sulfite Food Grade And Tech Grade | Other Name: | Food Grade And Tech Grade Anhydrous Sodium Sulphite |
|---|---|---|---|
| Color: | White Crystalline | Grade: | Food Grade And Tech Grade, First Grade |
| Usage: | Fruit Additive,industrial Use | CAS NO: | 7757-83-7 |
| High Light: | sodium sulfite anhydrous,sodium sulfite oxygen scavenger |
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SODIUM SULPHITE
SODIUM SULFITE ANHYDROUS
FOOD AND TECH GRADE
Application
| Pulp and paper industry | Lignin removal agent |
| Water treatment | Oxygen scavenger agent. |
| Photographic industry | To protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions. |
| Textile industry | Bleaching, desulfurizing and dechlorinating agent |
| Chemical manufacturing | Sulfonation and sulfomethylation agent. It is used in the production of sodium thiosulfate. |
| Leather trade | The sulfitization of tanning extracts |
| Other applications | l froth flotation of ores |
Usage:
The role of anhydrous sodium sulfite is extensive, it is in the pharmaceutical industry, paper making, leather tanning and dyeing industries and plant fiber bleaching, food, etc have a very important role. Addition of anhydrous sodium sulfite is also used to film developing, bleaching agents, printing and dyeing industry as a deoxygenation 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 |
| 1.Grade | Food grade |
| 2.Purity | 97% |
| 3.Molecular formula | Na2SO3 |
| 5. CAS No | 7757-83-7 |
| 6. HS CODE | 28321000 |
| 7. EINECS No | 231-821-4 |
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 | 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 |
Application:
It is used in dyeing industry as deoxidizer and bleaching agent for a variety of cotton fabric treating and scouring, which can prevent fabrics from local oxidation and deterioration of fibre strength. In photographic industry it is used as a reagent. In organic industry it is used as reducing agent in production of m-phenylenediamine, 25 - bared oxazolone, amino salicylic acid, etc. Textile industry uses it as a stabilizer for synthetic fibre. Other applications include various uses in paper mills, electronic industry, water treatment, etc.
Nature:
White crystal or powder; no foul. Soluble in water, very slightly soluble in ethanol, almost insoluble in ether. White hexagonal prismatic crystals, soluble in water (0 ℃ 12.54g/100ml water; 80 ℃ when the 283g/100ml water), in 33.4 ℃ The maximum solubility of about 28% when the aqueous solution is alkaline, PH value is about 9 ~ 9.5 . Slightly soluble in alcohol, insoluble in liquid chlorine, ammonia. Easily oxidized in air sodium, when the temperature is decomposed into sodium sulfide. To strengthen the reducing agent, reacts with sulfur dioxide, sodium bisulfite, reacted with the acid salt.
Contact Person: Mrs. Kim Xie
Fax: Ningbo Keyuan Holdings Group
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