dye|World dye variety

Name:C.I.Vat Brown 31,C.I.70695

Molecular Structure: anthraquinones

C.I.Vat Brown 31,C.I.70695,CAS 6451-09-8,604.61,C41H20N2O4,Red Brown Dbl,Red Brown R

Molecular Formula:C₄₁H₂₀N₂O₄

Molecular Weight: 604.61

CAS Registry Number:6451-09-8

Manufacturing Methods : 1-Nitro-9,10-dioxo-9,10-dihydroanthracene-2-carboxylic acid (2 Moore) and 4-(4-Aminophenyl)benzenamine (1 Moore) condensation, then in sulfuric acid central change, then take off carboxyl group. Note: in addition to Acridone and Acridine dye outside, goods in the dye containing about 23% and 7% corresponding double Acridone and double Acridine dye.

Properties and Applications:  red light brown. Soluble in 1, 2, 3, 4 – Tetrahydronaphthalene, Xylene. In concentrated sulfuric acid for brown light yellow, dilution red brown after precipitation; In the basic insurance powder solution for red brown; In the acidic insurance powder solution for brown.

List of Suppliers:

Amanthrene Red Brown Dbl Pdr( Standard Dyes )

Carbanthrene Red Brown R( Allied chemical Corporation?)