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Duasyn Ink Blue SLK

Acid Blue 93

Duasyn Ink Blue SLK is a selected water soluble dye with excellent fastness in strong acidic media. Suitable for the coloration of detergents and cleaners. Suitable also for stationery, polishes and fertilizers.

Duasyn Ink Blue SLK

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  • Very good stability in acidic media
  • High tinting strength
  • High brilliancy and transparency in aqueous solution

Technical data


Heubach’s colorants suitable for the use in products bearing eco-labels meet also the requirements for not being bio-accumulating. Assessment of the logKow (partition coefficient oil/water) values indicates that all the colorants meet the lowest threshold defined in the corresponding Nordic Ecolabel and EU Ecolabel product group guidelines.

Material meets Heubach’s strict purity requirements.

Please refer to the Material Safety Data Sheet to have the complete and very latest safety information.

Product Data

Physical Data


pH Value

4 – 6

Solubility Water [g/l]

approx. 80

Ethanol [g/l]

Methylethylketone [g/l]

Fastness Data

Acid and Alkaline Fastness acidic




Light Fastness Water Solution (0.01%)

Pad-Dyeing Paper (1%)

2 – 3

Textile (1/3 SD)

Stability to Oxidative and Reductive Agents

Hydrogen Peroxide

Sodium Dithionate


Duasyn Ink Blue SLK is recommended for coloration of acidic and toilet cleaners.


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