Nouryon Sodium Hydrosulfide 30%

Nouryon Sodium Hydrosulfide 30% is an economical form of reactive sulfur, typically a light-yellow colored liquid solution with the distinctive odor of rotten eggs. It is soluble in both alcohol and water. When Sodium Hydrosulfide comes into contact with acids, it releases hydrogen sulfide (H₂S), a toxic gas.

Chemical Name: Sodium Hydrogen Sulphide

CAS Number: 16721-80-5

Chemical Family: Inorganic Acids

Labeling Claims: Not Listed In California Proposition 65

Applicable Processes: Flame Retardant Production, Leather-Dehairing, Mining Applications, Paper Manufacturing, Plastics Manufacturing, Textile Treatment, Vulcanization Accelerators Manufacturing

Synonyms: Hydrogen sodium sulfide (HNaS), NSC 158264, Sodium bisulfide, Sodium hydrogen sulfide (NaHS), Sodium hydrosulfide (Na(HS)), Sodium mercaptan, Sodium mercaptide, Sodium sulfhydrate, Sodium sulfide (Na(SH))

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Identification & Functionality

Features & Benefits

Applications & Uses

Markets
Applications
Applicable Processes
Compatible Substrates & Surfaces
Industrial Additives End Use
Product Applications
  • Sodium hydrosulfide is used as a reactive form of sulfur and acts as an intermediate in the production of other chemicals, including thio-chemicals used in textile processing, in the production of flame retardant resins, and in vulcanization accelerators.
  • Sodium hydrosulfide is also used as a processing aid in the production of a variety of industrial products.
  • It is a die-hairing agent in the production of fine leathers.
  • In mining, it is a flotation agent, helpful in the precipitation of metals from ore slurries.
  • Sodium hydrosulfide is also valuable as a raw material in the production of heat-resistant plastics for the auto and electronic industries.
  • In paper making, Sodium hydrosulfide is used to add sulfidity to cooking liquor in kraft pulp mills.

Properties

Physical Form
Soluble In
Appearance
Yellow to green liquid
Characteristics
ValueUnitsTest Method / Conditions
Boiling Point (at 1 bar)approx. 110°C-
Crystallisation Pointapprox. -13°C-
Viscosity (at 20°C)approx. 2.8mm²/s-
Vapor Pressure (at 20°C)approx. 17mbar-
Vapor Pressure (at 50°C)approx. 70mbar-
Specifications
ValueUnitsTest Method / Conditions
Sodium Hydrosulfide Content29 - 31wt%-
Density (at 20°C)1.185 - 1.205kg/l-
Molecular Weight56.06--
Sodium Carbonatemax. 0.5wt%-
Sodium Sulfidemax. 0.3wt%-

Regulatory & Compliance

Safety & Health

Safety Information
  • Sodium Hydrosulfide 30% is classified as a hazardous substance.
  • Although hydrogen sulfide (H2S) forms a stable bond with caustic in the NaSH solution, toxic vapor concentrations of H2S above the liquid are possible and typical for high quality NaSH solutions.
  • For this reason NaSH should always be handled in closed systems under inert gas while vapors should be treated before venting into the air.
  • Tank containers should not be opened at any time unless the tank is properly decontaminated.

Packaging & Availability

Packaging Type
Supplied by
Packaging Information

Shipped in: Tank Trailers, ISO Tank Containers and Rail Tank Cars.

Storage & Handling

Storage Information

Store under nitrogen atmosphere in closed storage tanks. Requirements regarding storage tank design are available on request.