CAS No.： 1313-82-2
Molecular formula： Na2S
Molecular weight： 78.04
EINECS No.： 215-211-5
Chemical properties: yellow or reddish brown block, flake and granular, with an eggy smell.
Chemical formula: Na2S
Úsalo: Used in the dye industry to produce sulfur dyes, and is the raw material for sulfur cyan and sulfur blue. Used as a dyeing aid for dissolving sulfur dyes in the printing and dyeing industry. Used in the leather industry for hydrolysis to remove hair from raw hides, and also used to prepare sodium polysulfide to accelerate the soaking of dry hides and softening. Used as a cooking agent for paper in the papermaking industry. Used in the textile industry for denitrification of artificial fibers and reduction of nitrates, as well as a mordant for dyeing cotton fabrics. Used in the pharmaceutical industry for the production of antipyretics such as phenacetin. In addition, it is also used to make sodium thiosulfate, sodium hydrosulfide, sodium polysulfide, etc.
