... Hydrosulphide, export Sodium Hydrosulfide Flakes, Sodium Hydrosulphide Solid in high quality at competitive price.Usage: Mainly used by ... less iron, sodium sulfide, sodium carbonate, insolubles impurity in water, DIP-dying in the leather production, it can disperse the fibre ... and release hydrogen disulfice at its melting point, soluble in water and alcohols, its water solution is strongly alkaline ...