Is 4-Amino-3-nitrophenol banned?
4-Amino-3-nitrophenol is permitted by the US FDA. Several countries restrict, warning-label, or have reviewed it for safety concerns. The US has more lenient additive rules than the EU, UK, Canada, and Japan, which is why this ingredient remains widely used here.
Why 4-Amino-3-nitrophenol is flagged
Concentration-restricted in the EU.
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