Nouryon Functional Chemicals LLC Performance Formulations
Product Data Sheet Sodium Hydrosulfide (NaHS) Solution, 45%
Nomenclature Sodium Hydrosulfide Sodium Hydrogen Sulfide Formula NaSH Product UN 2922 Identification Number CAS Number 16721-80-5 Molecular Weight 56.06 Description Sodium Hydrosulfide (NaHS) is an economical form of reactive sulfur that is typically a light-yellow colored solution with the accompanying odor of rotten eggs. Hydrogen Sulfide (H2S), a toxic gas, is evolved upon contact of NaHS with acids. NaHS is mildly corrosive to carbon steel and cast iron. Stainless steels are very resistant to corrosion. Copper and its alloys, aluminum and zinc are rapidly attacked. Polyvinyl chloride (PVC) storage systems are to be avoided. Available Grades Technical Grade Typical Parameter Specification Test Method Composition NaHS (%) 42.5 – 46.5 QCL455 Na2S (%) 1.5 max. QCL455 Na2CO3 (%) 0.6 max. QCL453 Na2S2O3 (%) 0.3 max. QCL456 Na2S2 (%) 0.05 max. QCL456 Typical Specific Gravity (50°C/15.6°C) 1.259 – 1.283 ----- Properties Density (lb./gal) at 50°C (122°F) 10.5 – 10.7 ----- Freezing Point 11°C (52°F) - 22°C (72°F) ----- Fe 6 ppm max. QCL452 Shipping Tank Trailers (22 short tons net weight) Containers ISO Tank Containers (22 to 25 short tons net weight) Rail Tank Cars (92 short tons net weight) Uses Chemical In manufacture of thio compounds such as thioamides, thiourea, thioglycolic acid, thio and dithiobenzoic acids, and sodium thiosulfate. As an agent to separate or remove heavy metals. Dyes To apply sulfur dyes to cotton, leather and skins; as a process material in the manufacture of some dyes Leather Processing As a dehairing agent to produce fine leathers Glass Making As a fining agent in flint glass Metal Refining As a floatation aid; to precipitate metals for recovery
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131 South Dearborn Street T +1 888 578 5387 B. Doyle, revised 12-April-2020 Chicago, IL 60603 https://sulfurderivatives.nouryon.com U.S.A Uses (continued) Mining For sulfidizing the ore and as a depressant in flotation circuits Plastics Manufacturing As a process additive in the manufacture of heat resistant thermoplastics for the auto and electric and electronic industries Paper Industry In synthetic cooking liquor for kraft pulp mill start-ups or as a make-up chemical for this process Textiles To desulfurize viscose rayon and regenerated viscose