Direct Blue 297(TDS)

Application and parameters of Direct Blue 297

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Direct Blue 297

Direct blend navy blue D-R
Direct Navy Blue D-R
Direct Navy Blue R
direct fast dark blue D-R

CAS NO: 2602-46-2

CI.NO: direct blue 297

Molecular Formula: C54H30N10Na8O28S8
Molecular Weight: 1707.3
Shade: red light navy blue.

Direct Blue 297 Physical and Chemical properties

Density 1.60
Dyeing Depth % 2
Light Fastness -
Washing Fatness 2-3
Rubbing Fastness(dry) 4
Rubbing Fastness(wet) 1-2

Colour Fastness Test

sun exposure






acid and alkali resistant

standard depth



original color change

whita fiber stained

original color change

white fiber stained

original color change

white fiber stained




sulfuric acid

acetic acid

soda ash








Direct Blue 297 Appearance is a blue-black uniform powder that is soluble in water.


Direct Blue 297 Application:

Used for cellulose fiber dyeing and printing of, also suitable for polyester/cotton, polyester/stick blended a bath dyeing of step.

Use condition:

Direct Blue 297 Used in the one-bath one-step dyeing process of polyester-cotton, polyester-bonded or cotton-nitrile blended fabrics. The dyeing of cotton and viscose fibers can be dyed in the same bath as the disperse dyes or as a direct dye. It has high directness to cellulose fiber and high dyeing rate, that is, it also has a high dye uptake rate when a small amount of inorganic salt is used. The dye solution has good stability and does not agglomerate in the dye bath at 130 ° C. The pH value of the dye bath It has a wide adaptability range and has a good dye uptake rate for cellulose fibers under acidic conditions.


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

Direct Blue 297 Material Safety Data Sheet (MSDS)

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