General Use - Inks, Highlighters, Cleaning Products, (pH 4-9) (2000 series)

The dyes listed here are water soluble anionic dyes selected from the acid, direct and reactive dye classes. They have good solubility in water and moderate solubility in glycols and alcohols. The suggested pH range for dyes listed herein is 5-9. We offer other specialty dyes for high PH and low pH applications.

Wildfire near Nederland_12_1468165127237_42134206_ver1.0_640_480.jpg

Tracer Dyes / Leak Detection (4000 series)

Tracer dyes are commonly used for tracing water leaks, irrigation lines, fertilizer systems, etc., and are generally used at the rate of 1-5 parts per million. The rhodamine and uranine dyes are especially well suited for tracing since they are also fluorescent and can be detected with black light.


Acidic (Low pH) product (pH<4) (5000 series)

These specially selected dyes are intended for use in dyeing industrial products where color stability in acidic environments (pH<7) is critical. Acidic (Low pH) product (pH<4)


Alkaline (High pH) products (pH>9)  (6000 series)

For use in dyeing industrial products where color stability in alkaline (pH>7) environments is critical.


Engine Coolant/Antifreeze, Heat Transfer Fluids, Glass Cleaner & Washer Fluid (6000 series)

Dyes can be added at varying concentrations to produce shades ranging from light to dark. Dye concentration is usually stated as a percentage based on the weight of the antifreeze. The following use rates represent typical applications for dyes in powder form. Blue, green and violet shades generally require less dye than do red, orange and yellow shades. Deep red shades require high use rates.

Solvent (oil soluble) Dyes for Hydrocarbons & Non-Polar Solvents (7000 series)

Robert Koch Industries' line of solvent dyes are soluble in oils, fats, waxes, resins, hydrocarbons, non-polar solvents, and to a lesser extent, alcohols. Solvent Dyes are insoluble in water.


Water Soluble Basic Dyes (8000 series)

Basic dyes are cationic (positively charged) dyes with excellent solubility in water and moderate solubility in many glycols and alcohols. These dyes are high in color strength and have characteristically brilliant color, including many beautiful fluorescent shades. Basic dyes are widely used in many applications.


Food & Cosmetic Grade Dyes for High Purity / Low Toxicity Applications

We offer the following FDA certified colors for use in industrial and craft applications. We do not currently provide FD&C colorants to the food, cosmetic or pharmaceutical industries. FD&C dyes offer many advantages in technical applications, including high purity levels and low toxicity.


Absorption Dyes for Fresh Flowers (2000 series) 

Absorption dyes are specially selected anionic dyes used to systemically dye fresh cut flowers and foliage. These water soluble dyes


Immersion Dyes for Dried Flowers and Craft Materials (8000 series)

Products suitable for dyeing with our immersion dyes include:

  • Dried flowers and foliage such as caspia, statice, broom bloom

  • Decorative foliage such as leaves and mosses

  • Materials derived from vegetable fibers such as raffia, jute, straw and various grasses

  • Wood products such as excelsior, paper, baskets, and potpourri products like wood chips and curls


High Lightfast (HLF) Solvent Dyes for Polar Solvents and Alcohols (7000 series)

High Lightfast (HLF) Solvent Dyes for Polar Solvents and Alcohols are metal complex-solvent soluble dyes. These dyes are soluble in polar organic solvents such as methanol, ethanol, acetone, MEK, etc.  The dyes are characterized by:

  • Superior Lightfastness and Heat Stability

  • Good Resistance to Chemical Attack

  • High Transparency

  • Very High Dye Purity


Copyright: kesu87 / 123RF Stock Photo