murphySodium Phosphate
AKA: Monosodium phosphate, SODIUM DIHYDROGEN PHOSPHATE, Sodium acid phosphate, Monobasic, Sodium primary phosphate
Synthetic
Clean
OriginSodium phosphate is synthesized from phosphoric acid and sodium compounds through acid-base neutralization reactions. The resulting salt is purified and crystallized to create the final buffering agent used in formulations.
Sodium dihydrogenorthophosphate
Formula
NaO4P-2
Mol. Weight
117.96
CAS #
7558-80-7, 7632-05-5
Form
Powder
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Buffering
Anti Seborrheic
Deodorant
Anti-Inflammatory
Boosts Collagen
Wound Healing
Controls flaking and oiliness
Neutralizes odor
Maintains optimal pH
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
2 studies / 2 not irritating (CIR 710)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 710)
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 mixed / reactions minimal (CIR 710)
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2021
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR