| Item | Standards |
|---|---|
| Appearance Flakes | Yellow, orange-yellow, brown, taupe |
| Odor | Stench |
| Density | Not applicable |
| Boiling Point | No information available |
| Melting Point | 55 °C / 131 °F |
| Flash Point | 90 °C / 194 °F |
| PH | 11 |
| Stability | Hygroscopic. Temperatures above 50°C. Incompatible products. Exposure to moist air or water. Keep away from open flames, hot surfaces and sources of ignition. Acids, Strong oxidizing agents, Metals, copper |
| Water Solubility | 620 g/L (20°C) |
Product description:
Sodium Hydrosulfide Flakes (NaHS 70%) are industrial-grade, hygroscopic flakes with strong reducing properties and high water solubility. The product is commonly supplied in yellow to brown shades and is used in processes requiring sulfide chemistry, mineral activation, reduction, or metal precipitation.
With its practical solid form and consistent NaHS content, Sodium Hydrosulfide is widely used in mining, pulp and paper, leather processing, wastewater treatment, and chemical manufacturing.
Product Applications:
- Mineral Flotation
Used as an activator and flotation reagent in the beneficiation of copper and other non-ferrous metal ores, particularly in processes involving oxidized minerals.
- Pulp & Paper Processing
Used as a sulfur makeup chemical in kraft pulping systems to support lignin removal and fiber separation during pulp production.
- Leather Processing
Applied during hide processing as a reducing and dehairing agent to support efficient hair removal before subsequent tanning steps.
- Chemical & Wastewater Treatment
Used as a reducing agent, sulfur-containing chemical intermediate, and precipitating agent in selected chemical manufacturing and heavy-metal treatment processes.
Why Choose Our Sodium Hydrosulfide?
Consistent NaHS Content
Controlled ≥70% NaHS content supports stable performance in industrial processing and formulation.
High Water Solubility
Good solubility allows efficient preparation and introduction into suitable industrial process systems.
Multi-Industry Versatility
Suitable for mining, pulp and paper, leather processing, chemical manufacturing, and metal treatment applications.
Technical Documentation Support
TDS, SDS, COA, and relevant batch documentation are available for technical review and purchasing requirements.

