2,4-Diaminophenoxyethanol HCl

2,4-Diaminophenoxyethanol HCl molecular structure
molecular structure · PubChem
AKA: 4-Diaminophenoxyethanol dihydrochloride, 66422-95-5, Dihydrochloride, 4-DiaminophenoxyethanolHcl, 4-DIAMINOPHENOXYETHANOL HYDROCHLORIDE, 847455-21-4
Synthetic
Not Clean
2-(2,4-diaminophenoxy)ethanol dihydrochloride
Formula
C8H13ClN2O2
Mol. Weight
204.65
CAS #
66422-95-5
Form
Liquid
State
Solid; [MSDSonline] Light grey to light pink solid; [EC]
Functions
Hair Dyeing
Colors Hair
Traditional Use
A hydrochloride form of a synthetic hair dye precursor developed for oxidative hair coloring. It was designed to improve water solubility and stability in alkaline permanent wave solutions.
EWG
6
CIR
Safe as used
Pregnancy
No
CIR Safety Findings
Not a Sensitizer
ewg-6
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU✔ permitted
JAPAN✔ permitted
CANADA✔ permitted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
No
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR