Sulphides; of sodium, whether or not chemically defined

HS code 283010 covers the classification of sodium sulphides, which are important chemical compounds with a wide range of industrial applications. Sodium sulphides are used in various manufacturing processes, from the production of other chemicals to the treatment of textiles and leather. This industry plays a crucial role in the broader chemical sector, contributing to the development of numerous downstream products that are essential for various industries and the overall economy.

The production of sodium sulphides typically involves the reaction of sodium hydroxide (NaOH) with hydrogen sulphide (H2S). This process can be carried out using various methods, such as the Leblanc process or the Kraft process. The Leblanc process involves the reaction of sodium carbonate (Na2CO3) with calcium sulphide (CaS) to produce sodium sulphide, while the Kraft process utilizes the reaction of sodium hydroxide (NaOH) with sodium hydrosulphide (NaHS) to form the final product.

The main inputs required for the production of sodium sulphides include sodium hydroxide, hydrogen sulphide, and other raw materials such as sodium carbonate and calcium sulphide, depending on the specific production method used. Additionally, the industry requires various types of equipment and machinery, such as reactors, distillation columns, and drying units, to facilitate the manufacturing process.

The primary output of HS code 283010 is sodium sulphide, which can be used as a chemical intermediate in the production of other compounds, such as 283090 Sulphides; polysulphides, whether or not chemically defined, excluding those of sodium, 283220 Sulphites; of sodium, and 283330 Sulphates; of aluminium. Sodium sulphide also finds applications in the textile, leather, and pulp and paper industries, as well as in the production of various other chemicals.