Sodium Metabisulphite for food use
CAS NO.:7681-57-4 Formula : Na2S2O5
H.S. CODE:2832.100000
Sodium Metabisulphite for food use
CAS NO.:7681-57-4 Formula : Na2S2O5
H.S. CODE:2832.100000
- Product Identification
CAS No. : 7681-57-4
H.S. Code: 2832.100000
Formula: Na2S2O5
Molecular Weight.: 190.12
Toxicity LD50:178 mg/kg (rabbit vein)
Synonyms: sodium pyrosulfite, sodium metabisulfite
- Physical And Chemical Properties
Physical State(Appearance): White or light yellow powder, relative condense 1.4 in moist. It dissolves in water and glycerine and little in ethanol. Decomposed in humid, oxygenized into sodium sulfate by exposed in air, sulpher dioxide will be released when it contacts with strong acid and then created the relative salt, resolved by heated at 150 oC.
Specific Gravity :1.48
Solubility :in water 54 g/100ml (20 oC)
PH: 4-4.6
Stability: Stable under ordinary conditions
- Applications
Mining Industry : N/A
Medicine industry: Used for manufacturing trichloromethane, sulphetrone and benzaldohyde.
Rubber industry: Used as coagulative agent.
Dye-industry: Used as dechlorination agent and cotton boiling-off agent for bleached cotton.
Leather industry: It can make leather soft, well-developed, tough water proof, wear-ability and etc.
Chemical industry: Used for manufacturing hydrochloride hydroxylamine and etc.
Light-sensitive industry: Used as developer and others.
- Specification
Quality Standard : GB1893-1998
Appearance: White crystal powder
AssayY(Na2S2O5): 95% Min ( 98%MIN)
SO2: 65% Min
Water Insoluble: 0.05% Max
Iron (Fe): 50PPM Max
Heavy Metal (Pb): 20PPM
Chloride (Cl) :- / 3PPM
Arsenic (As): 2PPM
PH Value: 4.0 – 4.6
- Transportation
Storage: Cannot be stored and transported together with gasoline, acids or oxidants and other inflammable substances.
Packing : In 25kgs / 1000Kgs Net P.P. Woven Bags With PE Liner.
- Other Trade Information
Min. Order Quantity : 1FCL (25Mts)
Supply Capacity: 36,000mts /Year
Loading Capacity: 27Mts/1080bags (1x20'FCL)
Port of Loading: Guangzhou,China
Fresh Stocks: Yes
Shipment Time: Within 2-3 weeks upon receipt of advance payment or L/C .
Payment Time: T/T In Advance, Sight L/C, L/C 60 days after B/L date.
Origin Hunan, Tianjin
Sample Availability: Yes
Main Export Markets: South Africa, Thailand, Lebanon, Iran, Spain
