2-Amino-4-Nitrophenol

AKA: 99-57-0, 2-Hydroxy-5-nitroaniline, 4-Nitro-2-aminophenol, P-Nitro-o-aminophenol, Rodol 42, 4-Nitro-2-aminofenol, 1-Amino-2-hydroxy-5-nitrobenzene, 1-Hydroxy-2-amino-4-nitrobenzene
Synthetic
Not Clean
OriginSynthesized from 4-nitroaniline, an aromatic amine compound derived from petroleum-based chemical precursors. Produced through selective reduction and oxidation reactions to introduce the amino and nitro functional groups.
2-amino-4-nitrophenol appears as orange prisms or yellow powder. No odor. (NTP, 1992)
Solubility less than 1 mg/mL at 68 °F (NTP, 1992)
Formula
C6H6N2O3
Mol. Weight
154.12
CAS #
99-57-0
Form
Powder
State
2-amino-4-nitrophenol appears as orange prisms or yellow powder. No odor. (NTP, 1992)
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
Functions
Hair Dyeing
Antioxidant Protection
Reduces Inflammation
Fights Bacteria
Colors Hair
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
No
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR