Sodium Metabisulfite Smbs (Na2S2O5) Food Grade
Product Description
| Name |
Sodium Metabisulfite |
| Molecular formula |
Na2S2O5 |
| Molecular weight |
190.09 |
| Executive standard |
HG/T 2826-2008 |
| CAS NO. |
7681-57-4 |
| EINECS NO. |
231-673-0 |
| Appearance |
White or yellowish crystal powder |
| Density |
1.48g/cm3 |
| Melting point |
170ºC |
| Odor |
Strong SO2 odor |
| Solubility |
Soluble in water and acidic in aqueous solution |
| Property |
When exposed to strong acid,it emits SO2 to form corresponding salts.When exposed to air for a long time,it oxidizes to Na2S2O4,so the product can not last forever.SO2 is decomposed when the temperature is higher than 1500ºC. |
2.Specification
| Item |
Index |
| Superior quality |
First class |
| Main content(Na2S2O4),% ≥ |
97min |
97.1 |
| Iron(Fe),% ≤ |
0.005 |
0.01 |
| Water-insoluble,% ≤ |
0.05 |
0.05 |
| (As) ,% ≤ |
0.0001 |
--- |
1) Printing and dyeing mordant
2) Antichlor in after fabric bleaching
3) Chemical and medicine reducer and sulfonating agent
4) Bleaching agent of bamboo
5) Wood and paper fiber
6) Nonferrous metal dressing agent
7) Waste water finishing agent
8) Rubber coagulator
9) Alkyl spice aldeheyde in spice industry
10) Depilating agent
11) Softening agent and anti-wear agent in leather industry
12) Reducer of developer and protective agent of fixative in sensitization industry
Packing and Transport
Packing:25/50/1000kg bag
Transport: should be protected from rain and sunlight.It is strictly prohibited to store and transport with acids,oxidants and harmful and toxic substances.
Storage: Should be stored in a dry,clean warehouse.The package should be sealed to prevent air oxidation.Guard against moisture.
- Who are we?
We are based in Weifang, China, export to North America(15.00%),Eastern Europe(15.00%),Southeast Asia(15.00%),South America(10.00%),Eastern Asia(10.00%),Northern Europe(10.00%),Mid East(5.00%),Western
- How can we guarantee quality?
Free samples can be supplied for test quality, Or can sending us your product pecifications and requests,we will manufacture the products according to your requests.
- How about the delivery time
Normally 10- 15 days after the deposit show in our bank account.
- Why should you buy from us not from other suppliers?
Weifang Tainuo Chemical ltd. is a global chemical manufacturer and traders focuses on advanced chemical technology .we can help buyers to decide which products are there best choice, and all your inquiry will be replyed within 24 hours
- What services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,FAS,CIP,FCA, DDP,DDU,Express Delivery,
Accepted Payment Currency:USD,EUR,JPY,CAD,
Accepted Payment Type: T/T,L/C,D/P D/A,
Audited Supplier 
){kind=link}
){kind=link}