Since the European Commission removed titanium dioxide (E171) from the list of permitted food additives, formulators across confectionery, bakery and beverage sectors have had to reformulate. For buyers sourcing decorative shine, the practical question is no longer "do you sell pearl pigment?" but "can you prove your pearl pigment contains no E171, and can you document it batch by batch?"
E171 is titanium dioxide used as a food colourant. An E171-free pearlescent pigment therefore relies on a mica substrate with metal-oxide coatings rather than on pigmentary TiO₂ as a colorant. Note the distinction that trips up buyers: titanium dioxide can still legitimately appear as a coating layer in an interference pigment, because the coating is a bound structural film, not a dispersed colorant particle. Always ask your supplier to state the regulatory basis of any TiO₂ content rather than assuming "contains titanium" equals "contains E171".
| Line item | Why it matters |
|---|---|
| Substrate | Natural or synthetic mica / glass flake — drives luster, whiteness and price |
| Particle size distribution | D10 / D50 / D90 in µm — controls satin vs sparkle and mouthfeel |
| Heavy metals (Pb, As, Hg, Cd) | The core food-safety gate; must be declared with a test method |
| Microbiological limits | Total plate count, yeasts & moulds, E. coli, Salmonella |
| Solubility / extractables | Evidence the pigment stays inert in the food matrix |
| Bulk density & pH | Affects dosing accuracy and behaviour in aqueous systems |
| Carrier & diluent | Some "luster dusts" are diluted with maltodextrin or starch — check the label |
| Documentation pack | COA per batch, TDS, SDS, food-contact declaration, GMP statement |
Q1: Is E171-free the same as titanium-dioxide-free?
No. E171 refers to TiO₂ as a permitted food colourant. Interference pigments use a bound TiO₂ film as an optical layer. What matters is the regulatory status of that layer in your target market, and whether it is bound rather than dispersed.
Q2: Can I use one grade for cake, chocolate and drinks?
Usually not. Dry-dusted cake decoration tolerates coarser, higher-luster grades; beverages need finer particles and a density-matched system to avoid sedimentation (see article 3).
Q3: What does “E171-free” mean on a spec sheet?
E171 is titanium dioxide used as a food colourant. An E171-free pearlescent pigment relies on a mica substrate with metal-oxide coatings rather than pigmentary TiO₂ as a colorant. Note: TiO₂ can still appear as a bound coating layer in an interference pigment — ask the supplier to state the regulatory basis of any TiO₂ content. See the TiO₂-free guide.
Q4: What specification lines should a food buyer verify?
Substrate, particle-size distribution (D10/D50/D90), heavy metals (Pb/As/Hg/Cd), microbiological limits, solubility/extractables, bulk density and pH, carrier/diluent, and the documentation pack (COA, TDS, SDS, food-contact declaration, GMP statement). See the food-grade specification.
Q5: Can titanium in a pigment mean it contains E171?
No. Titanium dioxide as a bound coating layer in an interference pigment is a structural film, not a dispersed colorant particle. “Contains titanium” is not the same as “contains E171” — always confirm the regulatory basis. See quality standards.
Q6: How do I document batch-by-batch compliance?
Request a COA per batch, plus TDS, SDS, food-contact declaration and a GMP statement; specify lot-level traceability so changing grade later does not re-open the compliance file. The food application page explains layer-position evidence.
Q7: Is E171-free pigment suitable for beverages and bakery?
It can be, provided the specific grade is documented for food-contact decorative use and carries the right certifications with TDS/SDS/COA on file. Verify the whole composition, not just the absence of E171. The beverage and packaging guide covers the two routes.