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| Place of Origin: | Hunan |
| Brand Name: | Kemsky |
| Certification: | ISO 9001 |
| Model Number: | sodium sulfite fruit preservative |
| Minimum Order Quantity: | 1 metric ton |
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| 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 SSA Fruit Preservative | Other Name: | Anhydrous Sodium Sulphite Fruit Preservative |
|---|---|---|---|
| Grade: | Food Grade For Food Industry | Usage: | Stablizer ,fruit Preservative |
| Packing: | 25 Kgs Plastic Woven Bag | Mocular: | Na2SO3 |
| High Light: | sodium sulfite anhydrous,sodium sulfite preservative |
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SODIUM SULPHITE
SODIUM SULFITE ANHYDROUS
Sodium Sulfite Anhydrous
is a soluble sodium salt of sulfurous acid (sulphite) with the chemical formula Na2SO3.It is a white crystal powder or granule that tastes salty with sulphur odor.
1. Chemical Analysis
| Component | Range | Typical |
| Na2SO3% | ≥ 97.0 % | 97.37% |
| Fe % | ≤ 0.003% | 0.003% |
| Water insoluble matter | ≤ 0.02% | 0.02% |
| Na2CO3 | ≤ 0.10% | 0.10% |
| Na2SO4 | ≤ 2.5% | 2.5% |
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.
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.
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 |
| 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 |
Superiority
1, High quality with competitive price:
We are manufacturer and can provide high quality products with factory price.
2, Fast and safe delivery
1) Parcels can be sent out within 24 hours after payment. Tracking number is available.
2) Secure and discreet shipment. You have various choices of transportation methods.
3, We have clients throughout the world.
1) Professional service and rich experience make customers feel at ease, adequate stock and fast delivery meet your desire.
2) Market feedback and goods feedback are appreciated, meeting customers's requirement is our responsibility.
3) High quality, competitive price, fast delivery, first-class service gain the trust and praise from the customers.
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 | — | — | — |
| 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 |
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.
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.
Contact Person: Mrs. Kim Xie
Fax: Ningbo Keyuan Holdings Group
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