The boiling method is to heat and boil the amines, phenols or nitro compounds of aromatic hydrocarbons and sodium polysulfide in water or organic solvents to prepare black, blue and green sulfur dyes.
Applications of Sulfur Powder
Sulfur powder has a wide range of applications in industry. Our common items such as matches, adhesives, synthetic fibres, paper products, plastics, batteries, lotions, skin cream dyes, fungicides, etc. all owe their existence to sulfur powder. In recent years, with the advancement of ultra-micro grinding technology, micronised sulfur powder has a wider and higher-end application. For example, sulfur is added in the manufacture of tyres to harden the rubber and prevent it from melting at higher temperatures.
Insoluble sulfur is mainly used as a vulcanisation accelerator and agent in the rubber industry. It allows a more solid adhesion of the rubber, prevents the rubber from breaking apart and improves resistance to heat and tyre wear, and is therefore an essential raw material in tyre production.
