2-Amino-5-Nitrophenol

AKA: 121-88-0, 5-Nitro-2-aminophenol, 2-Hydroxy-4-nitroaniline, Ursol Yellow Brown A, 3-Nitro-6-aminophenol, Rodol YBA, 3-Hydroxy-4-aminonitrobenzene, C.I. 76535
Synthetic
Not Clean
Origin2-Amino-5-Nitrophenol is synthesized from nitrophenol precursors within the aromatic amine chemical family. It is produced through selective reduction of the nitro group on nitrophenol using catalytic hydrogenation or chemical reducing agents.
2-amino-5-nitrophenol appears as brown amorphous granules or powder. Melting point 198-202 °C.
Solubility less than 1 mg/mL at 68 °F (NTP, 1992)
Formula
C6H6N2O3
Mol. Weight
154.12
CAS #
121-88-0
Form
Powder
State
2-amino-5-nitrophenol appears as brown amorphous granules or powder. Melting point 198-202 °C.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
Functions
Hair Dyeing
Colors Hair
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
5
CIR
Safe as used
Pregnancy
No
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR