Specifications

sodium metabisulfite
1.monthly output about 3000MT
2.Purity(Na2S2O5): 97% Min
3.SO2 Content: 65% Min
4.CAS No.:7681-57-4

Commodity name :Sodium Pyrosulfite, Sodium Metabisulfite 

1. Chemical formula:Na2S2O5
2.Standard:Industrial Grade:HG/T2826—2008,Food Grade:GB1893—2008

Product Specification:

Item	Index
	Technical Grade		Food Grade
	Special	First
Na2S2O5              %   ≥	96.5	95.0	96.5
Iron (Fe)               ≤	50ppm	100ppm	30ppm
Clear degree	—	—	Through the test
Water-fast material      %  ≤	0.05	0.05	—
Heavy metal(Pb)     %  ≤	—	—	5ppm
Arsenic(As)             ≤	1ppm	—	1ppm

 

Physical appearance:White or slightly yellow crystal powder.
3. Package:Compound plastic woven bag with polyethylene liner, net weight 25kg or 50kg each.

 

4. Notice: Store it in aeration and shady place . Not put it together with strong acids, oxidants. Avoid the 
wrappage being perforated and prevent from water and moisture when conveyed.  Exposure to moisture
 will make it to be oxidized easily to release SO2. Do not store it for long time. 

 

5. Aplication:Bleaching agent for textiles.  Dechlorination agent for Bleached textiles. Bleaching agent 
for paper pulps. Bactericide and antiseptic in food industries. Disposal agent for waste water,etc.

 

6. Quality-keep time:6 months.

 

 

About our company

Rongda Chemical Co.,Ltd is an export-oriented enterprise specialized in producing and marketing zinc-based chemical material. Our head company is Zhuzhou Mingqi Chemical Co.,Ltd .which was established in 2005,famous by the great performance and reputation in domestic chemical market. Actually we are biggest distributor for sodium sulfite in China. Rongda was built mainly for our export sales.
Rongda has it’s own invested and cooperative facilities, and also represent some other renowned suppliers in China.

The main products with yearly production capacity as below:
1) Sodium sulfite anhydrous Capacity: 30,000metric tons
2) Zinc sulphate Capacity: 30,000metric tons
3) Zinc oxide Capacity: 30,000metric tons
4) Rongalite Capacity: 20,000metric tons
5) Sodium metabisulphite Capacity: 50,000metric tons
6) Soda ash Capacity: 30,000 metric tons

Rongda is also dedicated to source and supply other quality chemicals to meet customer’s needs.
Rongda is still young,but we will try the best to be your reliable source of chemicals from China.