Ammonium Phosphate

AKA: Ammonium dihydrogen phosphate, 7722-76-1, Ammonium biphosphate, MONOAMMONIUM PHOSPHATE, Ammonium dihydrogen orthophosphate, Phosphoric acid, Monoammonium salt, Ammonium monophosphate, Ammonium dihydrophosphate, Primary ammonium phosphate, Monobasic ammonium phosphate
Synthetic
Not Clean
OriginDerived from ammonia and phosphoric acid, both produced through industrial chemical synthesis. Synthesized by combining ammonia with phosphoric acid through acid-base neutralization reaction.
Ammonium dihydrogenorthophosphate
Solubility Slightly soluble in ethanol; insoluble in acetone
Formula
H6NO4P
Mol. Weight
115.03
CAS #
7722-76-1
Form
Powder
State
Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; NKRA; Other Solid; Liquid; Dry Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Buffering
Oral Care
Stabilizes pH
Reduces Inflammation
Locks In Moisture
Supports dental health
Maintains optimal pH
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Mixed Skin Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions mild (CIR 710)
Eye Irritant in Testing
2 studies / 2 irritating / reactions slight to moderate (CIR 710)
Concentration Guide
Leave-onNot reported
Rinse-off0.6%
0%50%100%
CIR reported use · 2015 survey
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR