Dynathrene dyes offer excellent fastness to washing, light and bleaching for cellulosic fiber.







Dynathrene


C.I. Vat


CAS NO.


Characteristics







Grey M


Black 8


2278-50-4


Bluish Grey








Product Name: Vat Black 8





Synonyms:C.I. 71000; C.I. Vat Black 8;
5H-benzo[6,7]indazolo[2,3,4-fgh]naphtho[2'',3'':6',7']indolo[3',2':5,6]anthra[2,1,9-mna]acridine-5,8,13,25(24H)-tetrone; Vat Grey 6BR,Vat Grey M,Vat Grey M-T


Molecular Formula: C45H19N3O4


Molecular Weight: 665.65


CAS NO.2278-50-4
EINECS 218-906-1
Molecular Structure :






Properties and Applications: blue light grey. Black powder. Insoluble in water, Acetone, Etanol, Toluene and Chloroform, slightly soluble in 2 Chlorophenol, Pyridine . In concentrated sulfuric acid to have yellow green: alkaline reduction leuco for blue light green; Acid reduction leuco for red brown: mainly used in the cotton fabric jig dyeing, dyeing and suspended pad dyeing, also used for Fiber/cotton, polyester-cotton blended fabric two bath set of dye dyeing. Suitable for suspension pad dyeing deep, shallow gray, and can spell dye all kinds of noise. Its main leuco dye yarn, can also be used to viscose and silk dyeing.






Standard


Ironing Fastness


Chlorine bleach


Light Fastness


Mercerized


Oxygen bleach


Soaping




Fading


Stain




ISO


4


4-5


7


4


5


4


5






--LYY




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