Sodium hydrosulfide Basic Knowledge
At room temperature, sodium hydrosulfide (NaHS) appears as off-white granular solid or dark red flaky crystals. Its molecular structure contains both hydrosulfide ions (HS⁻) and sodium ions. Commercial products are mostly mixtures containing crystal water and trace impurities, with concentration and purity significantly affected by the manufacturing process.
Sodium hydrosulfide Core Reaction Principles
The compound exhibits dual reaction characteristics due to its unique structure:
1. Behavior in Alkaline Environments
In aqueous solutions with pH > 9, it primarily undergoes dissociation, releasing small amounts of sulfide ions (S²⁻) to form a weakly corrosive medium.
Experimental verification: When the solution pH is adjusted to alkaline with sodium hydroxide and silver nitrate reagent is added, a slow formation of dark brown silver sulfide precipitate can be observed.
Sodium Hydrosulfide – Zibo Anhao Chemical Co., Ltd.
Zibo Anhao Chemical Co., Ltd. is a professional and trusted supplier of Sodium Hydrosulfide (NaHS) (CAS: 16721-80-5), a core inorganic sulfur compound widely used across global industries. Our product portfolio includes high-purity solid flakes (≥70% purity) and stable aqueous solutions (30%–45% concentration), tailored to meet diverse industrial application needs.
Manufactured in strict accordance with national and international quality standards, our sodium hydrosulfide features stable chemical properties, high water solubility, and strong alkalinity (pH 12–13 for 30% solution). It is a versatile industrial material serving as a key raw material and auxiliary agent in multiple fields:
Mining & Metallurgy: Acts as a selective depressant in copper and non-ferrous metal ore flotation, enhancing mineral separation efficiency.
Leather Tanning: Used for unhairing and tanning of raw hides, ensuring efficient and high-quality leather processing.
Dye & Chemical Intermediates: Serves as a reducing agent and sulfidation intermediate in the synthesis of sulfide dyes, thiols, and other organic sulfur compounds.
Wastewater Treatment: Effectively precipitates heavy metal ions and removes sulfur-containing pollutants in industrial effluents.
Textile & Fiber: Applied in desulfurization of viscose fibers and sulfite dyeing processes.
Located in Zibo, Shandong—China’s renowned chemical industry base—we leverage superior geographical advantages and mature supply chain resources to ensure stable product quality, reliable supply capacity, and competitive pricing. Our sodium hydrosulfide is packaged in 25kg woven bags or 200kg iron drums, with flexible packaging options available upon request. Committed to safety, environmental protection, and customer satisfaction, we provide professional technical support and comprehensive after-sales services, adhering to strict hazardous chemical production and transportation regulations.
