Sodium disulphite

Superiority:

Sodium pyrosulfite

 

Sodium pyrosulfite is white or yellow crystal powder or small crystal, with a strong SO2 smell, the specific gravity of 1.4, soluble in water, the aqueous solution is acidic, contact with strong acid will release SO2 and generate the corresponding salts, for a long time in the air, it will be oxidized into Na2S2O6, so the product cannot exist for a long time. Above 150 degrees Celsius, you get SO2.

 

Item	Standard:GB1893-2008	Result
Main content (calculated as Na2S2O5),%	≥96.5	≥97.5
Iron content (in Fe),%	≤0.003	≤0.0015
Clarity	Passed	clarification
Heavy metal content (in Pb),%	≤0.0005	≤0.0002
Arsenic content (As content),%	≤0.0001	≤0.0001

Folding main purpose

Chemical industry

Used for the production of insurance powder, sulfadiazine analgen, caprolactam, etc., as well as chloroform, phenylpropanoid and benzaldehyde purification. Used in the photographic industry as a fixing agent. The spice industry is used to produce vanillin. Used as preservative in brewing industry, rubber coagulant and dechlorination agent after bleaching cotton cloth. Organic intermediates, dyes and tanneries are used as reducing agents in the electroplating industry, wastewater treatment in oil fields and as mineral dressing agents in mines.

 

Industry

For printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; In food processing as a preservative, bleaching agent, loose agent.

 

Used as a chemical reagent

(printing and dyeing and photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthesis of pharmaceuticals and spices, etc.

 

Problem of folding

Major hazards

 

Health hazard: This product has obvious stimulating effect on skin and mucous membrane, and can cause symptoms of conjunctiva and bronchitis. People with allergies or asthma are very sensitive to this, and direct skin contact can cause burns.

 

Explosion hazard: the product is non-flammable, toxic and irritating.

 

Terms of security

S26In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

S39Wear eye / face protection.

S46If swallowed, seek medical advice immediately and show this container or label.

R22Harmful if swallowed.

R31Contact with acids liberates toxic gas.

R41Risk of serious damage to the eyes.

Service we can provide:
1. Mixed container: We can mix different items in one container.
2. Quality control: Before shipment, we can provide free sample for test. Inspection before shipping.
3. Packing: We can pack according to your requirements and also give you some other packing methods for reference and suggest adequate packing methods according to global trend. We will send you photo of goods before shipment.
4. Prompt shipment: We usually can ship the goods within 7 days for 1*20'FCL conatiner after order confirmed and also provide professional shipping documents for your Customs clearance.
5. We work closely with DHL, FEDEX, UPS,ETC., we can ship samples and small quantity goods to you fast and safe.