Sodium hydrosulfide

• CAS NO.:16721-80-5
• HS CODE: 28301090

Main application:

• In the dye industry, it serves as an additive in the synthesis of organic intermediates and the pre paration of sulfur dyes. In the tannery industry, it is utilized for the processes of hair removal and tanning of raw hides.
• The fertilizer industry is used to remove monomer sulfur from activated carbon desulfurizers.
• It is widely used in the mining industry for copper ore beneficiation, and in the production of man-made fibers, it is used for sulfurous acid dyeing.

Manufacturing quality standards: GB∕T 23937-2020

Product parameters:

Appearance	Grade	Iron content	Executive Standard	NaHS content	NA2S content
Solid/flake	Premium	Fe:15ppm max	Gb	≥70%	＜3.0%
Solid/flake	Grade one	Fe:20ppm max	Gb	≥70%	＜3.0%
Solid/flake	Qualified	Fe:30ppm max	Gb	≥70%	＜3.0%