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






Dynathrene


C.I. Vat


CAS NO.


Characteristics







Brown R


Brown 3


131-92-0


Brown







Product Name: Vat Brown 3
Product Description:
Synonyms:C.I. 69015; C.I. Pigment Brown 28; C.I. Vat Brown 3; Vat Brown 3;
N,N'-(5,10,15,17-tetraoxo-10,15,16,17-tetrahydro-5H-dinaphtho[2,3-a:2',3'-i]carbazole-4,9-diyl)dibenzamide;
Vat Brown R; C.I.Vat Brown 3
Molecular Formula:C42H23N3O6


Molecular Weight: 665.65
CAS NO.131-92-0


EINECS 205-044-6


Molecular Structure :







Properties and Applications: brown. Deep red powder. Insoluble in water and Etanol, slightly soluble in Xylene for bordeaux red solution. In concentrated sulfuric acid for dark wine red, dilution to red light brown, flocks. Alkaline reduction leuco body for the color red; Acid reduction leuco for yellow brown. Is light brittle dye. To cotton affinity is poorer, less used in cotton dyeing. Suitable for direct printing, resist printing and aniline black color resist, also suitable for shallow, color of discharge. Suitable for cotton knits dyeing, more suitable for silk printing. But printing and dyeing fabric in sunlight exposure easy appear fiber brittle damage phenomenon. Can be used for viscose and wool dyeing, can also be processed into organic pigment.







Standard


Ironing Fastness


Chlorine bleach


Light Fastness


Mercerized


Oxygen bleach


Soaping




Fading


Stain




ISO


5


5


7


4-5


4-5


5


5




AATCC


5


5


7-8


4-5


4-5











--LYY
http://www.dychemco.com