Sodium Hydrosulfite 85%

Specifications Sodium Hydrosulfite,World Class Quality,Competitive Price,Good After-sales,Industrial Grade 90%,Food Grade 88%

 Commodity name:Sodium Hydrosulfite 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.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.
4.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. 5.Company Profile: 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 2007,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 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.