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Acid Blue 9
Acid Blue 9
Moderate concern
FD&C Blue No. 1 is FDA-listed and batch-certified under 21 CFR 74.101 with an established ADI of 12 mg/kg bw/day per JECFA/EFSA.
Found in
18 products
What it is
Acid Blue 9 is the synonym for FD&C Blue No. 1 (Brilliant Blue FCF, CI 42090) — a synthetic triarylmethane dye.
Color additive used to provide blue/green hues.
Why it's flagged
- Synthetic petroleum-derived azo-class dye
- California School Food Safety Act (2024) restricts artificial dyes in school food
- Individual sensitivity reactions reported
What regulators actually say
"FD&C Blue No. 1 is also known as Acid Blue 9 and is a straight color additive subject to batch certification."
"FDA Summary of Color Additives — FD&C Blue No. 1 listed for use in foods, drugs, and cosmetics."
Regulatory status
United States — FDA
Permitted under 21 CFR 74.101; subject to batch certification
European Union — EFSA
Permitted as E133; EFSA ADI 6 mg/kg bw/day
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