Nickel Subsulfide

Nickel smelting and refining; production of nickel powders and catalysts; byproduct of processing sulfide ores; emissions from refineries and some high‑temperature metalwork [1][2].

Mainly at work by inhaling dust or fumes; less commonly by skin contact; people near facilities may have low‑level air or dust exposure; take‑home contamination on work clothes [1][2].

Classified carcinogenic to humans; raises risk of lung and nasal/sinus cancer; can cause asthma‑like symptoms, chronic bronchitis, nasal irritation, and allergic skin rash in sensitized people [2][3][1].

Workers in nickel smelting/refining, powder/catalyst manufacturing, electroplating, and other processing of nickel sulfide ores; smokers with workplace exposure; people with asthma or nickel allergy [1][2][4].

Use engineering controls and local exhaust; follow exposure limits and wear appropriate respirators and protective clothing; wash/shower and change before going home; employers should monitor air and provide training; nearby residents can reduce indoor dust by wet‑wiping, keeping outdoor dust out, and checking facility notices [1][4][5].