|Place of Origin:||Hunan|
|Model Number:||antioxidant 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:||Antioxidant Sodium Sulfite SSA||Other Name:||Antioxidant Anhydrous Sodium Sulphite|
|Color:||White Crystalline Powder||Shelf Life:||12-24 Months|
sodium sulfite anhydrous,
sodium sulfite preservative
SODIUM SULFITE ANHYDROUS
|DOT Classification:||Not a DOT controlled material|
|Packing Group:||Not applicable|
Handing & Storage
(1).Precautions:Do not ingest. Do not breathe dust. Wear suitable protective clothing. If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles such as oxidizing agents, combustible materials, organic materials, acids.
(2).Storage: Air sensitive. Moisture sensitive. Keep container tightly closed. Keep container in a cool, well-ventilated area.
l In 25kg bags
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.
|melting point||500 °C|
|storage temp.||Store at RT.|
|solubility||H2O: 1 M at 20 °C, clear, colorless|
|Water Solubility||23 g/100 mL (20 ºC)|
|Stability||Stable. Incompatible with strong acids. Moisture and air sensitive.|
|Analytically pure-AR||Chemical pure-CP||High purity|
|Sulphurous acid( counted by Na2HSO3 )||Qualified||Qualified|
|Free alkali( counted by Na2CO3 )||≤0.1||≤0.3||≤0.5|
|Heavy metal(counted by Pb)||≤0.001||≤0.002||≤0.003|
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.
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.
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|Anhydyous sodium sulphite|
|English name||Anhydyous sodium sulphite|
|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||—||—||—|
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