FD&C Colors: A B2B Buyer's Guide to Food-Grade Colorant Systems

FD&C colors are not a single product you order by name - they are a US regulatory category, and the grade you actually receive depends on whether you buy a dye, a lake, or a blended system. Buyers who treat "FD&C Red 40" as one line item often end up with the wrong solubility, the wrong shade strength, or a batch that cannot clear customs. This guide covers how the US and EU systems differ, why lake selection changes your formulation, and how to write a specification your supplier can actually match.

FD&C Colors vs Lakes: What You Are Actually Buying

In the US system, certified color additives fall into two broad physical forms. A dye is water-soluble and delivers color in solution. A lake is the dye precipitated onto an insoluble substrate, usually aluminum hydroxide, which makes it oil-dispersible and far more stable in fat-based and low-moisture systems.

That single difference drives most formulation decisions:

A lake is not simply "dye plus filler." The substrate, particle size, and precipitation process determine shade, dispersion quality, and how much color you must add to hit a target. If your supplier quotes a lake by dye content alone, ask for application data in your actual matrix.

The US Certification Model: Confirm Per Batch

This is the part buyers most often get wrong. In the United States, certified color additives are subject to a batch-certification scheme administered by the FDA. Each manufactured lot is submitted for certification before it can legally be used in food. Certification is granted per batch, not per company and not per product name.

Practical implications for procurement:

• Ask your supplier to state, in writing, the certification status of the specific batch you are buying.
• Do not assume that a supplier's general "FDA compliant" statement covers a given lot.
• Request the batch certificate as a shipping document, not a marketing one.
• Re-verify on every repeat order. A previous certified batch says nothing about the next one.

Note also that "FD&C" is US terminology. Our own food pigment and food additive lines are supplied as food-grade colorants for the applications we list - we do not claim to hold US batch certification, and you should confirm certification status per batch with whichever supplier you qualify. That is exactly the discipline this section is asking you to apply to everyone, including us.

EU E-Numbers vs the US FD&C Naming System

If you sell into both markets, you maintain two vocabularies for the same molecules. The EU assigns E numbers; the US uses FD&C, D&C, or "color additive" designations. They overlap but do not map one-to-one, and permitted use categories differ by market and by application.

Two traps are common. First, a color permitted in one market may be restricted or require a warning label in another. Second, the same E number can carry different purity specifications depending on the market's criteria. Always specify your target market at the quotation stage rather than after artwork is printed.

Purity Criteria: The Mindset, Not Just the Certificate

Food-grade specifications are built around maximum limits for specific impurities - heavy metals, residual solvents, and unreacted intermediates among them. Regulatory bodies set these limits, and compliant suppliers test against them batch by batch.

As a buyer, shift your thinking from "is this food grade?" to "which impurity profile am I accepting, and who verified it?" Useful questions:

• Which specification does this batch test against - the US, EU, or another national standard?
• What is the tested value, not just pass/fail, for each regulated impurity?
• Is a certificate of analysis issued per batch, and does it reference the batch number?
• Which third-party laboratory performed the testing?

Apply the same discipline when evaluating our food pigment range: specification first, documentation per batch, application testing before scale-up.

Don't Forget Food-Contact Packaging Inks

A frequent and expensive oversight: the colorant in your product passes, but the ink printing the wrapper does not. Food-contact packaging inks are a separate regulatory stream. Migration from printed surfaces into food is assessed under its own rules, and the colorants used in those inks are not automatically the same grades cleared for direct food use.

Three practical checks before you approve packaging artwork:

1. Confirm the ink system is intended for food-contact application, not general commercial print.
2. Ask the converter for migration testing data relevant to your food type and storage conditions.
3. Verify that colorants used in the ink are covered by the appropriate food-contact specification, separate from your product colorant.

If you also supply non-food lines, keep the documentation streams separate so a packaging audit cannot be confused with a product audit.

Other Colorant Families You May Need to Specify

Not every project is a straight dye-or-lake decision. Depending on substrate and processing temperature, buyers sometimes evaluate adjacent chemistries:

• Fluorescent colorants - our fluorescent pigment TY series offers good solvent resistance and good migration resistance in PVC, and is best pre-dispersed into a masterbatch rather than added dry.
• Pigment pastes - water-based and oily pastes for systems where dry powder dispersion is impractical.
• Inorganic options - iron oxide and ultramarine blue (heat resistant to 300C) where organic colorants cannot take the process temperature.
• Titanium dioxide - rutile grade for opacity, often specified alongside the colorant rather than instead of it.

Match the colorant family to the process window first, then to the shade. Doing it the other way round is how reformulation costs appear.

How to Specify: Shade, Solubility, Regulatory Target

A clean specification lets a supplier quote accurately and lets you compare quotes that are actually comparable. Include these four blocks.

Add your processing conditions - heat exposure, pH range, shelf life, packaging format - because these determine whether a technically compliant colorant is a usable one. Our verified PB15 grades, for reference, run 200-280C heat resistance by grade with oil absorption of 40 +/-5; those are starting points for discussion, not guarantees for your line. Food colorants have their own profiles and should be evaluated in your application.

Samples typically start from 25 kg, and lead times of 2-4 weeks ex-works are common in this industry - confirm both with your supplier before committing to a launch date.

Next step

Write your specification in the four blocks above, then send it to us with your target market and application. We will tell you which food-grade colorant system fits, what documentation we can provide per batch, and where you need to run your own application trial. Request samples or a shade-matched quote and put the specification to work.