Product Description
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Sodium metabisulfite is white or yellow crystalline powder or small crystals, with a strong SO2 odor, specific gravity 1.4, soluble in water, the aqueous solution is acidic, and when it comes in contact with strong acid, it will release SO2 and generate corresponding salts. It will oxidize if left in the air for a long time. It becomes Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.Item | Chinese standard | Company standard |
HG/T2826-2008 |
| Top-grade | First grade | |
Main content(Na2S2O5) | 96.0 min | 95 | 96.5 |
Fe %( Fe) | 0.005max | 0.01 | 0.002 |
Water-Insoluble | 0.05max | 0.05 | 0.02 |
Arsenic(As) content | 0.0001max | -- | 0.0001 |
Application
------------------------------------------------------------------------------------------------------------------- 1. Chemical industryUsed in the production of insurance powder, sulfamethazine, a caprolactam, etc., as well as the purification of chloroform, phenylpropane sulfone and benzaldehyde. The photographic industry is used as an ingredient in fixers. The perfume industry is used to produce vanillin. Used as a preservative for brewing industry, a rubber coagulant and a bleaching agent for cotton bleaching. Organic intermediates, dyes, and tanning are used as reducing agents for electroplating, wastewater treatment in oil fields, and as a mineralizer for mines.
2. Industry
It is used in printing and dyeing, organic synthesis, printing, tanning, pharmaceutical and other departments; as a preservative, bleaching agent and loosening agent in food processing.
3. Used as a chemical reagent
(Printing and dyeing, photography, etc.), used as bleach mordant, reducing agent rubber coagulant, also used in organic synthetic pharmaceuticals and spices.Packing & Delivery
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Packing: 25kg/bag or JUMBO bag
Delivery Time: 3-10 days after receiving TT payment
Storage
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Store in a cool, ventilated warehouse. Keep away from fire and heat sources. The storage temperature should be kept above 16°C in the freezing season to prevent solidification. Keep the container tightly closed. It should be stored separately from oxidants and alkalis, and avoid mixed storage.Konw About the Company
-------------------------------------------------------------------------------------------------------------------Our company specialises in paraffin wax, chemical products,non-ferrous metals and related products. We always adhere to the business policy of being based in China and serving the whole world, adhering to the philosophy of high quality, low price, excellent service and honest management, providing the most sincere service to customers worldwide with professional service, stable supply and quality products.1.Experienced and reliable quality 2.Customer first, service first 3. Perfect sale service system 4.Rich products, accurate inventory management 5.High cost-effectiveOur Service
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1.Be 100% responsible for quality complaint ,0 quality issue in our past dealings.
2.Hundreds of products in different for your optiion.
3.Any inquiries will be replid within 12 hours.
4.Strictly on selecting raw materials.
5.Reasonable & competive price,punctually delivery.
FAQ
-------------------------------------------------------------------------------------------------------------------Q1.What's the shelf life for the cargos?
Our product's shelf life is 2 years, which is based on dry and ventilated storage.
Q2. What's product the delivery time ?
An: Deposit received 7-15 days of delivery. For special products like machine delivery time will be according to production situations.
Q3:How can I get the samples?
A: We can provide you free sample for our existing products, the lead time is about 1-2 days.You just need to pay the sample delivery cost.
Q4.Why did lots of customers choose us?
An: Stable quality, high efficient reply, very professional and experienced sales service.