3,3&# 39- Dichlorobenzidine hydrochloride CAS 612-83-9 , also known as DCB, is an important pigment intermediate used in mid to high grade biarylamine azo pigments such as pigment yellow 12,13,14,17,35,55, pigment orange 13, and pigment red 38. This series of organic pigments accounts for 25% of the total production of organic pigments. Due to the good solubility and migration resistance of biarylamine azo pigments, as well as their excellent crystallinity resistance and thermal stability, and their coloring strength is twice that of monoazo pigments, Due to its bright color and low price, DCB has a wide range of applications in industries such as ink, plastics, rubber, coatings, and dyes. In addition, DCB can also manufacture high-performance direct dyes and drugs. In addition, its pigment has a pure and bright color, alkali resistance, and good heat resistance, making it an irreplaceable variety in the pigment industry. For example, C.I pigment yellow 17 is suitable as a colorant for high transparency printing ink due to its coloring power and transparency, There is no choice but to use biarylamine yellow azo pigments. The world’s total production is 240000 tons/year, with 25% of the yellow series and 25000 tons/year of DCB demand. Due to environmental protection needs in countries such as Europe, America, and Japan, production has been stopped, and almost all of it is produced in China.

Chinese name: 3,3 ‘- Dichlorobenzidine hydrochloride

Foreign name: 3,3 ‘- ichlorobenzidine dihydrochloride

Alias: DCB

Chemical formula: C12H10Cl2N2.2HCL

Molecular weight: 326.05

CAS login number: 612-83-9

Melting point: 132~137 ℃

Boiling point: 385 ° C at 760 mmHg

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