久久无精品国产一级a∨片,狠狠狠狠狠一区二区三区,日本人妻熟女在线视频,国产精品露脸国语对白,av女优天堂网一区二区,free性欧美大hd另类4k,日本免费高清视频一区二区三区

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