| Model: | 7775-14-6 |
|---|---|
| Brand: | RongDa |
| Origin: | Made In China |
| Category: | Chemicals / Inorganic Chemical Materials / Other Inorganic Chemical Materials |
| Label: | Sodium hydrosulfite , Rongalite C , Sodium hydrosulphite |
| Price: |
US $1500
/ Metric Ton
|
| Min. Order: | 25 Metric Ton |
| Live Chat: | Last Online:17 Jun, 2014 |
Commodity name：Sodium Hydrosulfite,Cas No:7775-14-6
1.Chemical formula:Na2S2O4
2.Standard: Industrial Grade HG/T 2074-2011, Food Grade GB 22215-2008
HG/T 2074-2011 Product Specification
|
Item |
Index |
||
|
Special |
First |
Normal |
|
|
Sodium hydrosulfite (Na2S2O4 )%，≥ |
90.0 |
88.0 |
85.0 |
|
appearance |
White crystal powder |
||
|
smell |
No smell or slightly sulfur dioxide smell |
||
|
State when dissolved |
Clear or slightly muddy when dissolved in formaldehyde |
||
GB 22215-2008 Product Specification
|
Item |
Index |
|
Sodium hydrosulfite（Na2S2O4 ）% |
≥ 88.0 |
|
Clear degree |
Through the test |
|
Heavy metal（Pb） |
≤ 10ppm |
|
Lead(Pb) |
≤ 5ppm |
|
Cadmiun(Cd) |
≤ 2ppm |
|
Arsenic（As） |
≤ 1ppm |
|
Ethylenediamine tetraacetic acid disodium （EDTA） |
qualified |
|
formate (as HCOONa) |
≤ 0.05% |
3. Package：
1） Iron drums with double polyethylene liners, net weight 20kg or 40kg each.
2）Internal callbackable container, net weight 1200kg each.
4. Storage & handling: The product must always be handled and stored in sealed and clean iron drums or bulk
containers. Protect the product away from direct sunlight, heat , sparks and open flames. Avoid contacting it with moisture, acids, oxidizing chemicals and combustible organic substances. Handle the product carefully and
avoid damaging the package when conveyed. The storehouse should be equipped witdry-chemical fire extinguister, fire protection claw, water sourse and suitable gas mask.
5,Aplication: It is widely used in the textile industry for vat dyeing, reduction cleaning, printing, stripping and textile materials bleaching. It is also used in bleaching paper pulps , especially mechanical pulpbleaching kaolin clay and foodstuffs. As a reducing agent, it is used in organic synthesizing.
