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| Place of Origin: | HUNAN PROVINCE |
| Brand Name: | NBS |
| Certification: | SGS ISO |
| Model Number: | anhydrous sodium sulfite |
| Minimum Order Quantity: | 10 metric ton |
|---|---|
| Price: | around $ 440 usd per metric ton |
| Packaging Details: | 25 kgs bag,1000 1250 kgs jumbo bag |
| Delivery Time: | 3-5 days |
| Payment Terms: | T/T , L/C |
| Supply Ability: | 3000 tons per month |
| Name: | Sodium Sulfite Anhydrous | Other Name: | Anhydrous Sodium Sulphite |
|---|---|---|---|
| Situation: | Crystalline Powder | Shelf Life: | 24 Months |
| Usage: | For Industry Use, Water Treatment, Bleaching | Mocular: | Na2SO3 |
| High Light: | sodium sulfite water treatment,sodium sulfite anhydrous msds |
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93/96/97 % SODIUM SULFITE ANHYDROUS
products names : 93/96/97 % SODIUM SULFITE ANHYDROUS
Classification:Sulphate
Type:Sodium Sulfite
CAS No.:7757-83-7
Other Names:Sodium Sulphate
MF:Na2SO3
EINECS No.:231-821-4
Place of Origin:Hunan, China (Mainland)
Grade Standard:Food Grade, Industrial Grade
Purity:93/96/97/98% min
Appearance:White Crystal Powder
Application:Industry Grade;Food Grade;Photo Grade;Pharmaceutical Grade
Brand Name: nbschem www.nbschem.com
Model Number:90/93%
Sodium Sulfite
Sodium sulfite anhydrous(SSA), 
Specification:
| Item | Quality Index | |
| Industry Grade | Food Grade | |
| Purity ( As Na2SO3) | 96.0% min | 98.0% min |
| Sodium sulphate ( SO4) | 2.0% max | 1.2% max |
| Chlorides ( As NaCL) | 0.5% max | 0.08% max |
| Arsenic ( As ) | - | 0.0002% max |
| Heavy metals ( As Pb ) | - | 0.0005% max |
| Iron (Fe) | 0.005% max | 0.003% max |
| Water insoluble | 0.05% max |
0.01% max |
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.
Usage
(1) Industry Grade : Used in Dyeing and printing Industry , as dechlorinating agent and bleaching agent, in leather and tanning industry as bleaching agent , developer agent , reductant agent , stabilizer agent , or used in papermaking, electronic and water treatment industry.
(2) Food Grade: In food industry as additive (E223) preservative, antioxidant and antimicrobic for fruits (dried, glazed and candled), vegetables (onions, potatoes, etc.), juices (citrus and grapes) and fish (shrimps and prawns). In silage treatment as anti-fermentative. In starch and sweeteners production as bacteriostatic.
(3) Photo Grade: In the photographic industry as component of developer bath.
(4) Pharmaceutical Grade: pharmaceutical industry for the production of chloroform, benzene and formaldehyde phenylpropanoid Sulfone.
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 | — | — | — |
10. Packing : External packing is PP woven bag, Internal packing is PE bag,25 kgs, 50 kgs, 1000 kgs, and 1250 kgs bag packing.
11. 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.
erik@nbschem.com
erik@nbschem.com
Contact Person: Ms.xie
Tel: +8613975090964
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