少妇与子亂伦在线看香蕉性视频,妺妺窝人体色聚窝窝www,免费观看全黄做爰的视频,免费拍拍拍网站,性色av免费观看

Molecular formulabyNa_twoS. Molecular weight 78.04。

nature:Sodium sulfideby紅褐色片狀(zhuang)或塊狀(zhuang)固體(ti)(ti)，具有臭(chou)味。無水Sodium sulfide比(bi)重byone.856（one4℃），熔點(dian)byoneone80℃。 Industrial products are generally hydrate of nine crystal water,比重byone.4two7（one6℃），熔點byfifty℃； Easily deliquescent, corrosive and toxic; It is easy to oxidize in the air and soluble in water. The aqueous solution is strongly alkaline. In case of acid, it will produce toxic and flammable hydrogen sulfide gas.

Purpose:Sodium sulfideIt is used as the main raw material of sulfide dyes in the dye industry. It is also widely used in printing and dyeing, leather, papermaking and chemical industries. Printed circuit boards are used to precipitate heavy metals in wastewater.

Product quality:（one0fifty0-two009）

Packaging and storage:

This product belongs to inorganic alkaline corrosive product, and the number of hazard code is8two0oneone

two5kg woven bags lined with plastic bags.

本品易吸(xi)潮，需(xu)儲于陰涼干燥的(de)庫(ku)房內。搬(ban)運(yun)時要(yao)戴手套圍裙防止具有腐蝕性(xing)的(de)Sodium sulfide觸及(ji)皮膚。