Metallic Edible Luster Dust Flash Bronze F7521 Shimmer

F7521 sits within Kolortek's broader Edible Glitter Series and is cross-referenced as KT-7521 in the Metal Luster grouping of the Kolortek Pearls (Synstar 7000) lineup. The base structure is synthetic mica — fluorphlogopite — coated with iron oxide to produce the flash bronze tone. That combination gives the pigment its characteristic warm depth without relying on titanium dioxide, which matters increasingly in markets where TiO₂ in food applications is under regulatory scrutiny.

Particle size runs 20–100μm, a range that balances visible shimmer intensity against a texture that remains acceptable on finished food surfaces. In practice, this puts F7521 in the same working range as most professional-grade cake and confectionery decorating dusts.

Product Specifications

Applications

F7521 performs across a wide range of decorative food contexts. The most common end uses:

• Cakes and cake pops: Dry-brushing directly onto fondant, buttercream, or sculpted sugar work. The flash bronze tone pairs well with dark chocolate ganache and ivory fondant alike.
• Chocolate and confectionery: Mixed into cocoa butter for shell casting, or applied dry to moulded pralines and bonbons for a surface metallic finish.
• Beverages: Dispersed in alcohol or used as a rim garnish — the particle size suspends adequately for short pour-to-serve windows in cocktails and specialty coffees.
• Ice cream and frozen desserts: Applied at plating stage to finished scoops or decorative elements.
• Cookies and macarons: Post-bake surface decoration, either dry or suspended in a clear alcohol-based medium.

Worth noting: F7521 is not designed for direct baking or high-heat processing. Surface application after the thermal step is the correct approach for maintaining the metallic effect integrity.

Key Characteristics

A few performance points that matter in practice:

• Titanium dioxide free: Relevant for markets where TiO₂ food use is restricted or flagged. F7521 achieves its opacity and brilliance through the iron oxide coating on synthetic mica — no TiO₂ in the composition.
• Chemical and physical stability: The fluorphlogopite base is inherently more stable than natural mica, offering better consistency in color and particle geometry across batches.
• Blending compatibility: Mixes cleanly with other edible colorings without clumping under normal handling conditions. That said, like any fine powder, it benefits from dry blending before introducing any liquid phase.
• Concealing property: The iron oxide loading gives F7521 reasonable hiding strength relative to interference-type pearlescent pigments, which makes the bronze color read as solid metallic rather than translucent shimmer at typical application rates.

Available Colors in the Edible Glitter Series

F7521 Flash Bronze is one shade within a broad color program. The full Edible Glitter Series spans metallic, interference, and sparkle effects:

TiO₂-free variants are available across the range for compliance-sensitive applications.

Practical Considerations

Dispersion medium: For dry application — brushing onto a surface — no carrier is needed. For wet application or casting into chocolate shells, food-grade alcohol (e.g., vodka, Everclear) or cocoa butter are standard carriers. Water-based systems work but can affect dispersion uniformity depending on the substrate surface tension.

Application rate: There is no fixed loading — visual intensity scales with application density. Start light and build. Over-application on dry surfaces can produce a powdery rather than metallic appearance.

Storage: Keep sealed, dry, and away from direct light and heat. Powder pigments in this particle range are susceptible to moisture uptake, which causes clumping and can affect dispersion quality.

Regulatory context: F7521 is formulated for food contact use. Buyers sourcing for specific regional markets should confirm alignment with local food additive regulations, as requirements vary by jurisdiction. Documentation is available on request.

FAQ

Q: Is F7521 Flash Bronze actually safe to consume, or is it only for decoration?
F7521 is formulated from food-safe ingredients — fluorphlogopite (synthetic mica) and iron oxide — and is compliant with international food safety standards. It qualifies as a true luster dust for direct food contact and consumption, not just surface decoration in a display-only context. That said, buyers should verify alignment with specific regional regulatory frameworks for their target market.

Q: Does this product contain titanium dioxide?
No. F7521 is explicitly TiO₂-free. The color and opacity come entirely from the iron oxide coating on the synthetic mica substrate. This makes it suitable for formulations and markets where titanium dioxide in food applications is restricted or undesirable.

Q: How does F7521 compare to natural mica-based edible dusts?
The fluorphlogopite base in F7521 is synthetic mica, which offers tighter particle size distribution and more consistent batch-to-batch color versus natural mica. In practice, this means more predictable results when applying at scale or when color consistency matters across a production run.

Q: Can F7521 be used in beverages, or only on solid food surfaces?
It can be used in beverage applications — cocktails, specialty coffee, and similar — typically dispersed directly or pre-mixed in a small amount of alcohol. The 20–100μm particle range will not remain in suspension indefinitely, so it is best suited for immediate-serve formats rather than pre-batched beverages sitting for extended periods.

Request Samples or Technical Data

For sample requests, technical data sheets, safety documentation, or pricing on F7521 Flash Bronze and other shades in the Edible Glitter Series, contact the team directly at contact@kolortek.com. Custom color matching and bulk supply inquiries are handled through the same channel.