C.I. Vat Black 23

CAS NO.：1328-28-5
Molecular Weight: 0
EINECS: 603-672-9

What is C.I. Vat Black 23?

Preparation

1,5-Diaminoanthraquinone?or 1,8-diaminoanthraquinone?with Potassium hydroxide alkali fusion.

Properties and Applications

Ash. Slightly soluble in 1, 2, 3, 4 – Tetrahydronaphthalene, Xylene, insoluble in Etanol. In concentrated sulfuric acid for brown, dilution after black brown precipitation; In the basic insurance powder solution for dark red light purple.

Standard	Ironing Fastness	Chlorine bleach	Light Fastness	Mercerized	Oxygen bleach	Soaping
						Fading	Stain
ISO	4	4	6-7	4	4

Safety information for C.I. Vat Black 23

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