Amines, Amides and Aldehydes
Morpholine
CAS 110-91-8Liquid
- Corrosive
- Flammable
Sodium Hydrosulfide (Flake, Hydrated)
Also known as: Sodium hydrogen sulfideSodium sulfhydrateNaHS
- CAS16721-80-5
- EC240-778-0
- Physical formFlake
- GradeNaHS ~70%, water of crystallization ≥25% (commercial flake grade)
- OriginChina
Salt used as a sulfur/reducing agent source in leather tanning, ore flotation and wastewater treatment.
Sodium hydrosulfide (NaHS) is an inorganic salt obtained by the partial neutralization of sodium sulfide with hydrogen sulfide. It is commercially sold as light yellow flakes of a grade containing approximately 70% NaHS and more than 25% water of crystallization. It is used for dehairing in leather tanning, in ore flotation/beneficiation, in wastewater treatment and as a sulfur source in dye and rubber production. On contact with acids it releases toxic and flammable hydrogen sulfide gas.
Used in: RubberLeather and TanningWater and Wastewater TreatmentMetal Surface Treatment
| Density | 1.79 g/mL |
|---|---|
| Flash point | 90 °C |
| Purity | NaHS ~70%, water of crystallization ≥25% (commercial flake grade) |
Transport
- ADR class
- Class 8 — Corrosive substances
- UN number
- UN2949
- Packing group
- II
Hazard statements
- H290May be corrosive to metals.
- H301Toxic if swallowed.
- H312Harmful in contact with skin.
- H314Causes severe skin burns and eye damage.
- H413May cause long lasting harmful effects to aquatic life.
Precautionary statements
- P260Do not breathe dust/fume/gas/mist/vapours/spray.
- P264Wash hands thoroughly after handling.
- P270Do not eat, drink or smoke when using this product.
- P273Avoid release to the environment.
- P280Wear protective gloves/protective clothing/eye protection/face protection.
- P303+P361+P353IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water.
- P304+P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
- P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
- P310Immediately call a POISON CENTER/doctor.
- P405Store locked up.
- P406Store in a corrosion-resistant container with a resistant inner liner.
- P501Dispose of contents/container in accordance with local regulations.
- Safety data sheet (SDS)On request by email
- Technical data sheet (TDS)On request by email
- Certificate of analysis (CoA)On request by email
Applications
Dehairing in leather tanning · Ore flotation / beneficiation · Wastewater treatment · Dye and rubber production · Metal surface treatment
Storage
Store in a cool, dry and well-ventilated place · Keep in a closed container, protected from moisture · Keep away from acids and oxidizing substances · Do not store in aluminum, copper or zinc containers · Keep away from heat and fire sources
Packaging
Packed to your specification. Powders, crystals, flakes and granules are supplied in:
- Bags
- Big bags
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Sodium Hydrosulfide (Flake, Hydrated)
CAS 16721-80-5 · Flake
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