Sodium Metabisulphite
Business Type : Manufacturer/Factory&Trading Company
Main Product : Magnesium Chloride Calcium Chloride,Barium Chloride,
Sodium Metabisulphite, Sodium Bicarbonate
Number of Employees : 150
Year of Estabulishment : 2006
Management System Certification: ISO 9001
Location : Shandong,China(Mainland)
Product name : Sodium Metabisulphite
Other Names: Sodium Metabisufite;Sodium Pyrosulfite; SMBS; Disodium Metabisulfite; Disodium Pyrosulphite;Fertisilo;Metabisulfitede Sodium; Sodium Metabisulfite (Na2S2O5);Sodium Pyrosulfite(Na2S2O5); Sodium Dissulfite;Sodium Disulphite; Sodium Pyrosulphite.
Appearance: white or yellow crystal powder or small crystal ;Storage for a long time color gradient yellow.
PH: 4.0 to 4.6
Category: Antioxidants.
Molecular formula : Na2S2O5
The molecular weight : 190.10
CAS : 7681-57-4
EINECS : 231-673-0
Melting point: 150℃ (decomposition)
Relative density (water =1) : 1.48
Solubility: Soluble in water and acidic in aqueous solution (54g/100ml water at 20℃;81.7g/100ml water at 100℃).Soluble in glycerol, slightly soluble in ethanol.Relative density 1.4.Soluble in water, soluble in glycerol, slightly soluble in ethanol.Damp is easy to decompose, exposed to the air is easy to oxidize into sodium sulfate.Contact with strong acids gives off sulfur dioxide and forms corresponding salts.Decompose at 150℃.
Specifications
|
Items |
Tech Grade |
Food Grade |
|
Na2S2O5 content |
97.0 %min | 97.0 %min |
|
SO2 |
65.0%min | 65.0%min |
|
Heavy metals (as Pb) |
0.0005%max | |
|
Arsenic (As) |
0.0001%max | 0.0001%max |
|
Iron (Fe) |
0.005%max | 0.003%max |
|
Water insoluble |
0.05%max | 0.04%max |
Chemical industry:
1）Used for the production of insurance powder, sulfadimethylpyrimidine analgin, caprolactam, and chloroform, phenylpropylsulfone and benzaldehyde purification.
2）Used as a fixer in the photographic industry.
3）The spice industry is used to produce vanillin.
4）Used as industrial preservative in brewing, rubber coagulant and cotton cloth dechlorination after bleaching.
5) Organic intermediates, dyes and tanning are used as reducing agents for electroplating, waste water treatment in oil fields .
6)Used as mineral dressing agents in mines.
Pharmaceutical:
1)For the production of chloroform, phenylpropylsulfone and benzaldehyde.
2)The rubber industry is used as a coagulant.
Industry:
1)Used in printing and dyeing, organic synthesis, printing, leather, pharmaceutical and other fields.
2)Printing and dyeing industry for cotton bleach after the dechlorination agent, cotton refining additives.
3)The leather industry is used for leather treatment, which can make the leather soft, plump, tough, waterproof, flex-resistant, wear-resistant and other properties.
4)Chemical industry is used for organic synthesis of pharmaceutical and spices, production of hydroxyvanillin, hydroxyamine hydrochloride, etc.
5)Photographic industry used as developer, etc.
Food industry:
Used as bleaching agent, preservative, loosening agent, antioxidant, color protector and fresh-keeping agent.
Treatment measures
First, the sulfur is crushed into powder, and sent into the combustion furnace with compressed air for combustion at 600 ~ 800℃. The amount of air added is about 2 times of the theoretical amount, and the concentration of gas SO2 is 10-13.
Second, after cooling, dust removal and filtration, the sublimated sulfur and other impurities are removed, and the gas temperature is reduced to about 0℃, and it is passed into the series reactor
The third stage reactor is slowly added with mother liquor and soda soda solution for neutralization reaction, the reaction formula is as follows:
2NaHSO4+ Na2CO3 -- 2Na2SO4 + CO2+ H2O
The resulting sodium sulfite suspension is successively passed through the second stage and the first stage reactor for absorption reaction with SO2 to form the crystallization of sodium metabisulfite.
Payment Term: TT, LC or by negotiation
Port of Loading : Qingdao Port,China
Lead time : 10-30days after confirming the order
Small Oders Accepted Sample Available
Distributorships Offered Reputation
Price Quality Prompt Shipment
International Approvals Guarantee / Warranty
Country of Origin, CO/Form A/Form E/Form F...
Have more than 10 years professional experience in the production of Sodium Metabisulphite;
Could customize the packing according to your requirement; Safety factor of jumbo bag is 5:1;
Small trial order is acceptable , free sample is available;
Provide reasonable market analysis and product solutions;
Fire extinguishing method: fire personnel must wear full body fire - proof clothing, fire fighting in the upwind.When putting out a fire, move the container as far as possible from the fire site to an open area.
Emergency treatment: isolation of the leakage contaminated area, restricted access;Emergency personnel are recommended to wear dust masks (full cover), wear gas suits;Avoid dust, sweep up carefully, put in bags and transfer to a safe place;If there is a large amount of leakage, cover with plastic sheets and canvas.Collect, recycle or transport to waste disposal site for disposal.
Occupational exposure limit TLVTN: 5mg/m3
Engineering control: the production process is closed, and ventilation is strengthened.
Respiratory system protection: when the dust concentration in the air exceeds the standard, you must wear a self-suction filter dust mask.In case of emergency rescue or evacuation, an air respirator should be worn.
Precautions for Operation
Closed operation to strengthen ventilation.Operators must be specially trained and strictly follow the operating procedures.Operators are recommended to wear self-suction filter dust masks, wear chemical safety protective glasses, wear anti-toxic permeation overalls, and wear rubber gloves.Avoid dust.Avoid contact with oxidants and acids.Handle lightly to prevent damage to packaging and containers.Equipped with leakage emergency treatment equipment.Empty containers may retain harmful substances.
Storage: Shading, sealed storage.
Should be stored in a cool, dry warehouse.The package should be sealed to prevent air oxidation.Take care against moisture.The transportation should be protected from rain and sunlight.It is strictly prohibited to store and transport with acids, oxidants and harmful and poisonous substances.This product is not suitable for long storage.Handle with care during loading and unloading to prevent packing from breaking.In case of fire, use water and various fire extinguishers to put out the fire.
Transport matters
The packing should be complete and the loading should be safe at the time of shipment.Ensure that the container does not leak, collapse, fall or damage during transportation.It is strictly prohibited to be mixed with oxidants, acids and edible chemicals.The transportation should be protected against exposure to the sun, rain and high temperature.The vehicle should be thoroughly cleaned after transportation.
