The hydrazine dyes are various hydrazine derivative dyes synthesized from hydrazine and various fused ring ketone dyes synthesized from hydrazine derivatives. Generally, anthraquinone dyes have good light fastness and wash fastness, and occupy an important position in the field of synthetic dyes.
In the 19th century, the natural dye used in ancient times was a compound of hydroxyindole. Later, various alizarin derivatives were synthesized, and they were complexed with various metal salts such as chromium salts and aluminum salts to form mordant dyes.
Simple derivatives of hydrazine include guanamine compounds, hydrazine halogen compounds and the like. The hydrazine is reacted with glycerin in zinc and concentrated sulfuric acid to obtain benzoin and its derivatives, and various vat dyes having a large molecular weight, a bright color and a high fastness can be produced by a condensation reaction or the like. A variety of advanced acid dyes and reactive dyes can be prepared by using hydrazine as a raw material through a sulfonic acid compound containing an amino group, a hydroxyl group or a halogen.
In recent years, due to the rapid development of synthetic fibers, many of the disperse dyes required for synthetic fibers, particularly polyester fibers, are brightly colored and widely used, and are made of a compound containing a hydrophilic substituent.
Tantalum has disperse dyes, acid dyes, vat dyes, reactive dyes, etc., and has developed into a dye class with good chromatographic properties and good performance. There are more than 400 varieties of anthraquinone dyes, such as 2-Methylanthraquinone Refined CAS No. 84-54-8, which plays an important role in the field of synthetic dyes. The terpenoids are mainly composed of four blue dyes. The lanthanide dyes are brighter, and Longsheng has them. Haixiang Pharmaceuticals only has hydrazine reactive dyes.