Sulphides and polysulphides; whether or not chemically defined, other than sulphides of sodium

HS code 283090 covers a diverse range of sulphur-containing compounds, excluding sodium sulphides. These chemicals play a vital role in various industries, from agriculture and pharmaceuticals to textiles and mining. As a key component in the production of pesticides, dyes, and vulcanized rubber, the sulphides and polysulphides classified under this code are essential for the functioning of many global supply chains and the broader economy.

The production of sulphides and polysulphides typically involves the reaction of elemental sulphur with various metal or organic compounds. Common methods include the direct combination of sulphur with metals, the treatment of metal salts with hydrogen sulphide, and the reaction of organic compounds with sulphur or sulphur-containing reagents. The specific techniques used can vary depending on the desired product and the level of purity required.

The main inputs for the production of sulphides and polysulphides include elemental sulphur, various metal compounds (such as 282000 Inorganic chemical elements, oxides and halogen salts), and organic precursors. Specialized equipment, such as reactors, distillation columns, and purification systems, are also necessary for the manufacturing process.

The sulphides and polysulphides classified under HS code 283090 are used in a wide range of applications, including the production of 380810 Insecticides, rodenticides, fungicides, herbicides, anti-sprouting products and plant-growth regulators, 320000 Tanning or dyeing extracts; tannins and their derivatives; dyes, pigments and other colouring matter; paints and varnishes; putty and other mastics; inks, and 400000 Rubber and articles thereof. These chemicals may also be consumed by manufacturers of pharmaceuticals, textiles, and mining chemicals, among other industries.