亚洲免费在线观看-亚洲女人天堂-国产在线观看一区-欧洲美一区二区三区亚洲-国产美女在线播放-狠狠干五月天-在线看h片-宅男噜噜噜-99re6这里只有精品-全黄一级裸体-99精品久久久久久中文字幕-四虎网址大全-国产精品羞羞答答-88久久精品无码一区二区毛片-91精品国产91久久久久久黑人-婷婷在线综合-在线97视频-国产欧美日韩精品一区二区三区-小舞脱了内裤打开腿给人软件-91深夜视频-激情综合六月-66亚洲一卡2卡新区成片发布-麻豆蜜桃在线-操女人逼网站-不卡的免费av-人av在线-欧美黑人精品一区二区不卡-成人在线中文-一边搓奶一边摸下面太爽了-午夜影院1000

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