Sulfur black 1, also known as 522 sulphur black br, has a CAS number of 1326-82-5. This is a chemical belonging to the category sulphur dyes, mainly used for dyeing cotton and vitamin/cotton blended fabrics, as well as for dyeing hemp and viscose fibers.

522 sulphur black br is insoluble in water and ethanol, but when dissolved in sodium sulfide solution, it appears dark green. In hydrochloric acid, it precipitates as a green light black precipitate, and in sodium hydroxide solution, it appears blue.

If you want to use 522 sulphur black br to dye denim, it needs to be done at the dyeing factory. The specific dyeing process may include mixing 522 sulphur black br with sodium sulfide solution, then immersing the denim in the solution, and controlling parameters such as temperature, time, and pH to allow dye molecules to penetrate into the fibers, thereby achieving the dyeing effect.

Our factory produce 522 sulphur black br for 30 years, including 522 sulphur black br 200%, sulphur black 220% and 100%-240% different quality standard with competitive prices and reliable quality. Welcome your inquiry.

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