blog image

The final step is packaging and storage for distribution and sale. The process is carefully controlled to produce the desired dye, and it can vary depending on the type of dye being produced.

Get in touch with our team to learn more: (609)750-0093 /


The Dye Manufacturing Process

Synthetic dyes are a type of dye that is made using chemicals, rather than natural sources. These dyes are widely used in the textile, paper, and plastics industries due to their wide range of colors, resistance to fading, and stability. The manufacturing process of synthetic dyes can vary depending on the type of dye being produced, but there are several general steps that are involved.

The first step in the manufacturing process of synthetic dyes is the synthesis of the dye molecules. This typically involves a series of chemical reactions that are carefully controlled to produce the desired dye. The exact process will vary depending on the type of dye being produced, but it may involve the use of raw materials such as aniline, benzene, and other chemicals.

Once the dye molecules have been synthesized, they are purified and concentrated. This is done using a process called "drying" which involves heating the dye solution and then separating out the pure dye. This is the last stage for powdered dyes. If a liquid is the final form, then the purified dye is then dissolved in a liquid medium which also allows the dye to be applied to the materials that need to be colored.

blog image

Reactive dyes are a popular choice for tie-dyeing due to their bright, long-lasting colors and versatility. They are highly concentrated and can be mixed to create a wide range of colors.

For more information reach out to us at 609 750 0093 or email us at


Industry Spotlight : Tie-Dye

Tie-dye is a popular art form that involves the use of dyes to create vibrant and unique patterns on fabric. One type of dye commonly used in tie-dye is a reactive dye, which is known for its bright and long-lasting colors.

Reactive dyes are a type of dye that reacts chemically with the fibers of the fabric to create a permanent bond. This bond is what gives reactive dyes their long-lasting color and resistance to fading, even after multiple washings. They are highly concentrated and come in a range of colors, including bright and bold shades such as red, blue, and yellow.

One of the advantages of using reactive dyes in tie-dyeing is that they can be mixed together to create a wide range of colors, allowing for a high degree of creativity and experimentation. Additionally, reactive dyes can be applied to a variety of fabrics, including cotton, silk, and rayon.

blog image

Solvent dyes are a versatile and effective method of coloring plastics in the industry. They offer flexibility in terms of color, finish, and stability, and can be added in different ways to the plastic. They are resistant to fading and can withstand high temperatures and pressures, which makes them perfect for a wide range of applications in the plastics industry.

To learn more about our Solvent dye range please give us a call at (609)750-0093 or send us an email at


Solvent Dyes

Solvent dyes are a specialized type of dye that are used to color a wide variety of plastics. Solvent dyes are commonly used in the plastics industry for coloring a wide variety of plastic products, including toys, household items, automotive parts, and industrial components. They can also be used to color plastic films and sheets, which are used in a wide range of applications, such as packaging, signage, and window tinting. One of the major advantages of using solvent dyes in the plastics industry is their flexibility. These dyes can be used to produce a wide range of colors, including bright, saturated hues, as well as more subdued shades. They can also be used to produce a wide range of effects, such as pearlescent and metallic finishes.

Another advantage of solvent dyes is their stability. These dyes are resistant to fading, and they can withstand the high temperatures and pressures that are often used in the manufacturing process. This allows them to produce long-lasting, vibrant colors that remain consistent over time. Solvent dyes can be added to a plastic resin in a variety of ways. One common method is known as "dry blending," in which the dye is mixed with the plastic pellets before they are melted and formed into the desired shape. Another method is known as "solution dyeing," in which the dye is dissolved in a solvent and then added to the molten plastic. The completed product, solid or liquid masterbatch, is then used in a variety of plastics applications.

blog image

Product Spotlight: FD&C Yellow #5

FD&C Yellow No. 5, also known as tartrazine, is a synthetic yellow food coloring that is commonly used in a wide range of products, including beverages, baked goods, candies, cereals, and condiments. It is a popular food coloring because it produces a bright, vibrant yellow color.

One of the main uses of FD&C Yellow No. 5 is to add color to foods and beverages. For example, it is often used to give lemon-flavored drinks their distinctive yellow color, or to make green-colored candies look more vibrant. It is also commonly used to color cheeses, pickles, and other processed foods.

n addition to its use as a food coloring, FD&C Yellow No. 5 is also used in medications and personal care products. For example, it is sometimes used as a coloring agent in pills and tablets, or in mouthwashes and toothpaste to give them a more appealing color.

Overall, FD&C Yellow No. 5 is a widely-used food coloring that is known for its ability to produce a bright, vibrant yellow color.

blog image

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.

blog image

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.