Direct Dyes

Application and parameters of direct dye products

Home > Direct dyes > Direct dye blue

Direct Blue 6

TRADE NAME:
Direct Blue 2B
Direct Blue GS
Direct Blue A
ABCOL Direct Blue 2BS
Apollo Direct Blue 2B
Atul Direct Blue 2B
Atul Leather Blue D2B
Bitamine Direct Blue 2B
Dyrite Blue 2B-NB Conc
Leadirect Blue 2B-NB
Multicuer Blue GS
Rifa Direct Blue 2B
Rifa Direct Blue BW
Simrect Blue 24942
Vopsider Blue DA

CAS NO: 2602-46-2

CI.NO: 22610

Molecular Formula:C32H20N6Na4O14S4
Molecular Weight: 932.76
Shade:Cyan blue
COLOR TEMPLATE

Direct Blue 6 Physical and Chemical properties

Density 1.60
Dyeing Depth % 2
Light Fastness 2
Washing Fatness 2-3
Rubbing Fastness(dry) 4-5
Rubbing Fastness(wet) 3

Application Features

solubility(g/L)

SDC classification

displacement(grade)

metal ion effect(grade)

discharge property(grade)

other features

     

copper

iron

neutral

basic

 

B

4

2

4

4~5

4

Colour Fastness Test

sun exposure

soaping 

flooding

perspiration

rubbing

ironing

acid and  alkali resistant

standard depth

1/12

depth

original color change

white fiber stained

original color change

white fiber stained

original color change

white fiber stained

dry

wet

 

sulfuric

acetate

soda ash

2~3

2

4

1~2

4

1~2

4~5

2~3

4~5

2~3

2~3

4
 

Direct blue 2B alias direct indigo, direct indigo 2B. Appearance is generally dark blue uniform powder, good water solubility. Dissolved in water blue to navy, slightly soluble in alcohol and cellosolve, insoluble in other organic solvents. It is bright blue in sulfuric acid, turns purple to red blue after dilution, reddish brown in concentrated nitric acid, blue-violet in concentrated sodium hydroxide, red blue in concentrated ammonia, and concentrated hydrochloric acid in aqueous solution. There is a navy blue precipitate, and the concentrated sodium hydroxide has a deep purple precipitate. When the copper and iron ions are turned, the color turns red.

Direct Blue 6 Application:

Mainly used for cotton, such as glue the cellulose fibre, silk and their blended fabric, pulp and biological dyeing.

Use condition:

1. Direct Blue 6 has been used for dyeing cotton or viscose fiber to obtain cyan blue. For example, after diazotization, 2-naphthol is used to develop blue-violet gray color, and phenylmethylpyridone is used to develop green light gray. The dyeing rate is good, the dyeing property and leveling property are poor. When dyeing, salt should be added to control the dyeing to obtain uniform color. After dyeing, the dyeing solution should be naturally cooled to 40~80 °C, which is good for dye exhaustion. .

2. It has also been used for dyeing rich fiber, the dyeing rate is very good, the color light and dyeing cotton are similar. When dyeing vinyl fabric, the dyeing rate is poor, the color light is slightly darker than cotton. Cotton, viscose fiber and other fibers are the same. When dyeing the bath, the wool is light gray, the silk is very light, the nylon is heavily stained, the second vinegar is slightly stained, and the polyester and acrylic are light yellowish gray. If dyed at low temperature, the silk and wool are almost non-stained. .

3.It has also been used for direct printing of cotton or viscose fabrics, and it is necessary to add urea to dissolve the dark-colored paste.

When the ground color is discharged, the discharge performance is good.

Precautions

Direct Blue 6 can be used to decompose benzidine, which is a banned dye. The alternative dye is C.I.Direct Blue 71.

Packing:

20 or 25kg/compound bag, carton box, iron drum, fiber durm for powder dye and 1000kg/tank for liquid dye

Direct Blue 6 Material Safety Data Sheet (MSDS)

Inquiry for Direct Blue 6
Question: *
You can learn about other products:
Direct Blue 15
Direct Blue 71
Direct Blue 86
Direct Blue 106
Direct Blue 108
Direct Green 6
Direct Violet 12
Direct Violet 9
Direct Violet 1
Direct Black 22

Products Catalog

Solvent dyes
Solvent dye red
Solvent dye yellow
Solvent dye orange
Solvent dye green
Solvent dye blue
Solvent dye violet
Solvent dye black
Solvent dye brown
Basic dyes
Basic dye red
Basic dye yellow
Basic dye orange
Basic dye green
Basic dye blue
Basic dye violet
Basic dye black
Basic dye brown
Direct dyes
Direct dye red
Direct dye yellow
Direct dye orange
Direct dye blue
Direct dye green
Direct dye violet
Direct dye black
Direct dye brown
Acid dyes
Acid dye red
Acid dye yellow
Acid dye orange
Acid dye green
Acid dye violet
Acid dye blue
Acid dye black
Acid dye brown
Sulphur dyes
Sulphur dye red
Sulphur dye yellow
Sulphur dye green
Sulphur dye blue
Sulphur dye black
Sulphur dye brown
Vat dyes
Vat dye brown
Vat dye green
Vat dye red
Vat dye yellow
Vat dye orange
Vat dye blue
Vat dye violet
Vat dye black