6373-31-5

(a) 1-Chloroanthraquinone and 2-Aminobenzoic acid condensation in the presence of Nitrobenzene with Sulfuryl chloride and chloride Iodine monochloride and cyclization, (b) Naphtho[2,3-c]acridine-5,8,14(13H)-trione?chloride, ?about three chlorine atoms introduced. Note: commodity contains some dichloride.

2,5,7-Trichloro-3,4-phthaloylacridone , Indanthren Red Violet RRK, is prepared by chlorination of 3,4-phthaloylacridone in nitrobenzene with sulfuryl chloride .

red light purple. Red purple powder. Insoluble in water, soluble in 1, 2, 3, 4 – Tetrahydronaphthalene and Xylene. In concentrated sulfuric acid to orange, red purple precipitation after dilution. Alkaline reduction leuco for purple; Acid reduction leuco for brown. In the commodity dye a dichloride. Used for viscose fabric dyeing and printing, unfavorable discharge printing, can white discharge. To cotton have higher direct sex. Also can be used for wool, silk dyeing.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4-5	4-5	8	4	4
AATCC	4	4-5	7	4	4-5