一区二区日韩少妇首页,一起日一起射在线视频,青草社区色色,亚洲天堂女人的,色潮不卡亚洲无码,在线看片亚洲精品,玖玖re69在线经典,制服av五区,欧美精品国产内射

Hongye Chemical Co., Ltd is the leading professional manufacturer and supplier of Thiourea Dioxide and pulp bleaching agent FAS. We can produce 50000MT Thiourea Dioxide(Formamidine sulfinic acid) &pulp bleaching agent FAS.

TDO is a new kind of reducing agent that used as exchange of sodium hydrosulfite. It is widely used in textile and paper making industry. This product is also used in leather processing industry, paper, pulp and board industry, photographic industry, bleaching and reducing agents. This product is also a component of decolorisation agents. In macromolecule material industry, it is used as catalysis agent and stabilizer of resinic producing, and it is also used in organic synthesization of sensitizing material, and medicine, medical, spicery materials in fine chemicals, and also can be applied in the recycling and separating of heavy metals.

Physical & Chemical Features

Byname: Formamidine Sulfinic Acid

Molecular Formula:（NH2）2CSO2

PH 4 （1% Solution）

CAS NO. 1758-73-2 or 4189-44-0

UN NO:3341

Dangerous Goods Class:4.2

Specification:

Purity: 99.%Min

Thiourea: 0.10%Max

Moisture:0.05%Max

Iron(Fe):10ppm Max

Sulphate: 0.17%Max