Sodium hydrosulfide NaSH (CAS 16721‑80‑5) is supplied by Global Optimals in Tashkent with a purity of at least 70 % and impurity levels below 50 ppm. This colour‑less crystalline compound acts as a strong reducing agent and is extensively used in leather processing for depilation, in mineral flotation and in dye manufacturing. In aqueous solution NaSH dissociates to hydrosulfide ion (HS⁻), which remains stable in alkaline media and can reduce metal sulfates, disulfides and many organic oxidants. In leather treatment HS⁻ is typically combined with alkaline agents such as sodium hydroxide to control pH and accelerate hair removal, resulting in a softer, more uniform hide. In mineral processing the ion selectively adsorbs on copper, lead or zinc ore surfaces, suppressing their hydrophobicity and enhancing flotation recovery; it is often used together with carboxylate collectors to fine‑tune selectivity. In dye synthesis HS⁻ serves as a reductant for producing vivid sulfide pigments and for stabilising azo‑type colourants. The high grade ensures consistent reaction kinetics and limits formation of unwanted by‑products, which is critical when processing sensitive fabrics or reactive metals. When handling NaSH, strict safety measures are required: store in airtight, dry containers, protected from moisture and acidic environments, at temperatures not exceeding 30 °C. In water it forms hydrosulfide ions that react rapidly with metals, therefore non‑porous vessels and well‑ventilated work areas are recommended. Typical dosing involves preparing a 0.5–2 % aqueous solution, adjusted according to the required reduction intensity; adding a buffering agent such as sodium carbonate helps maintain alkaline conditions and reduces the risk of hydrogen sulfide evolution. Global Optimals offers NaSH in packs from 5 kg to 25 kg, accompanied by complete technical documentation (TDS, SDS, COA) and fast dispatch within 2‑3 business days across Uzbekistan and CIS markets. The company also provides consulting support to optimise technological parameters when using sodium hydrosulfide. Choosing a certified supplier guarantees reliable delivery and compliance with international quality standards.
| NaSH | ≥70% (р-р) |
| Fe | ≤50 ppm |
Drums 200 kg / Big bags
Sodium hydrosulfide (NaSH) must be stored in a dry, cool, well‑ventilated area, protected from direct sunlight and heat sources. Maintain storage temperature below +25 °C and relative humidity not exceeding 50 %. The material is supplied in sealed metal or polymer containers; regularly inspect packaging integrity and watch for corrosion. Typical shelf life is up to 12 months when stored under these conditions. During handling wear chemical‑resistant gloves, safety goggles and respiratory protection, avoid contact with acids or oxidizers, and ensure adequate ventilation.
