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All FD&C dyes are available in both granular and powder form, which can be used for different applications and manufacturing methods. FD&C and D&C dyes can also be formulated as “Lakes” which the FDA defines as “the aluminum salts of FD&C water-soluble dyes extended on a substratum of alumina.” This version of FDA approved dyes can be useful for certain applications which require water insolubility.

You can find a list of FDA approved and certified dyes and lakes on our “FD&C Dyes and Lakes” products page. These dyes can be custom blended and formulated to produce any color that you require. Get in touch with our team for further information and to request samples for your next project.


Product Spotlight: FD&C Dyes and Lakes

Here in the US, federal regulations govern which color additives can be used in products that we ingest or that come into contact with our skin. These color additives, known commonly as FD&C (Food, Drug & Cosmetics) dyes are either subject to batch certification or approved for use without certification. Generally, additives that do not require certification are natural substances, which are derived from sources such as fruits, vegetables and minerals and can be costly to implement at large scales. More commonly used are synthetic dyes, which are manufactured according to strict standards set by the Food and Drug Administration (FDA) and require batch certifications.

The synthetic dyes that are approved for use in the US fall into two categories, FD&C and D&C. FD&C dyes are approved for food, drug and cosmetic use, while D&C dyes are approved for drug and cosmetic use only. The FDA further regulates which D&C certified dyes can be used for external application and which are approved for use on drugs which are ingested. All FD&C and D&C dyes are certified considering many factors including the composition and properties of the substance, the amount that would typically be consumed, and the immediate and long-term health effects.

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Product availability:

  • 200% and crude powder
  • Granular form
  • FD&C Blue #1 (FDA certified powder)
  • 50% concentrated liquid

If you’re on the search for your next Acid Blue 9 supplier, you’ve come to the right place. Get in touch with our team to learn more: (609)750-0093 /


Product Spotlight : Acid Blue 9

Our world is full of color. We may take it for granted, but it’s the wide spectrum of color dyes and pigments that really bring color to our world. Out of all the color chemicals out there, you may be wondering -- which color dyes or pigment is most frequently used? The single most versatile dye, without question, would be Acid Blue 9. Commonly referred to as ‘Brilliant Blue FCF’ in the marketplace, this product happens to be a staple product of Chemworld’s wide-ranging product line.

As a high brilliancy blue coupled with high tinting strength, Acid Blue 9 is the recommended hue for many applications. Distinct advantages of this product choice include its ecologically and chemically safe nature of this dye. This is the same dye that is utilized for food coloring! Not only does Acid Blue 9 present an economically sound option, but its compatibility and flexibility in various formulas make it a straightforward choice.

Acid Blue 9 versatility stems from its chemical structure and tremendous soluble properties. Its non-toxic and biodegradable properties allow for varying suitable uses: ponds/lakes, water-tracer dyes, agriculture (seed colorants and fertilizers), spray-pattern indicators, detergents, inks, cleaning compounds, stationary goods, and much more.


Dyeing of the Chicago River

There are endless applications for color dyes, ranging from textile to plastics to paints! Very rarely does the general public get to witness the dyeing process. Luckily there's an annual tradition that opens up the world of color – dyeing of the Chicago River. St. Patrick's is a day celebrated in many parts of the globe, but the Windy City has a unique tradition. Dating back to 1962, Chicago dyes their river to a shamrock shade of green for this celebration. Thousands of visitors gather along the bridges and gorgeous riverwalk to watch Chicago transform its river.

This year, Chemworld is exceptionally proud of supplying the river dye to keep the tradition thriving! Of course, it's an environmentally-friendly dye. It fades out, allowing the river to regress back to its murky look. About 40 lbs. of this dye (physically appears to be a dark orange) is formulated into a secret recipe and plunged into the river. Multiple boats are used to dye and then churn the river. Watch the river turn bright green in the video below:


The Fundamentals: Dyes and Pigments

As defined by ETAD, The Ecological and Toxicological Association of Dyes and Organic Pigment Manufacturers, dyes are intensely colored or fluorescent organic substances only, which impart color to a substrate by selective absorption of light.