Food Safety Substance
Iron oxide (Fe3O4)
Iron oxide (Fe3O4) is a food additive with Approved in the EU, Approved (restricted) in the US, and data from 4 regulatory sources.
Substance Identity
Resolved identifiers used to render this food-safety record.
JECFA ADI Values
JECFA ADI records and evaluation years.
| Jurisdiction | Chemical name | JECFA no. | CAS | ADI | ADI upper | Function | Evaluation year |
|---|---|---|---|---|---|---|---|
| JECFA | IRON OXIDE BLACK | - | 1317-61-9 | 0-0.5 mg/kg bw | 0.5 | COLOUR | 1979 |
Cross-Reference to Cosmetics / Chemicals / Pharma
Same-CAS public rows from adjacent Roots verticals where available.
Cross-Vertical Regulatory Divergence
This substance has different regulatory treatment across food, cosmetics, and industrial use.
Frequently Asked Questions
Food-use, safety, ADI, and cross-vertical answers mirrored into FAQPage JSON-LD.
What is Iron oxide (Fe3O4) used for in food?
Iron oxide (Fe3O4) appears in food-use rows as: Food colorant.
Is Iron oxide (Fe3O4) safe?
This page does not assign a standalone safety verdict; it renders public regulatory evidence. ADI/reference value: ADI 0.5 mg/kg bw. EU status evidence: Approved. US/FDA evidence: Approved (restricted).
What is the ADI for Iron oxide (Fe3O4)?
Iron oxide (Fe3O4) has this ADI/reference value in the food-safety tables: ADI 0.5 mg/kg bw. Source: Food Additives.
Is Iron oxide (Fe3O4) also used in cosmetics?
Iron oxide (Fe3O4) has a same-CAS cosmetics cross-reference: CI 77499 (Black Iron Oxide), EU status permitted.