Country: 
China (Mainland)
Business Type:Trading Company
Tel: 008617663981261
Mobile: 17663981261
Tel: 008617663981261
Fax:
URL: http://www.eastchem-cn.com
Province/state: Shangdong
City: Qingdao
Street: No.1581-12,Jinshui Road, Licang, Qingdao,China
Contact SuppliersCAS NO.7681-57-4
CAS NO.7681-57-4
FOB price
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.
Founded in 2008, East Chemsources Limited is a professional manufacturer of supplier in food and pharmaceutical field in China.Through more than four years development, QINGDAO EAST CHEMSOURCES TRADE CO.,LTD,there is new branch office Qingdao East Chemsources Limited,our company has developed from single product at first to providing solution to finished products now, is committed to providing solutions for success and growth through long term relationships.
Currently, our products have been exported to more than 50 countries all over the world. Our service is accomplished by providing good quality solution that matches the specifications of our clients at competitive price. Our products will derive from trusted sources and arrive to our clients in time and well arranged manner, be creating the greatest benefits for our customers.
Whether your project is large or small, whether it needs one, several or all of our disciplines you will find our level of dedication to a quality result to be the same. We are looking forward to your sincere cooperation and participation.