Tricalcium Phosphate

AKA: 7758-87-4, Synthos, Tricalcium diphosphate, Calcium orthophosphate, Phosphoric acid, Calcium salt (2:3), Tricalcium orthophosphate, Calcigenol simple, Tertiary calcium phosphate, Tribasic
Synthetic
Clean
Tricalcium bis(orthophosphate)
Solubility 7.7g/L
Formula
Ca3O8P2
Mol. Weight
310.18
CAS #
7758-87-4
Form
Powder
State
Calcium phosphate is an odorless white solid. Sinks and mixes with water. (USCG, 1999)
Functions
Abrasive
Anticaking
Opacifying
Oral Care
Wound Healing
Traditional Use
Mined naturally from phosphate deposits and used for centuries in traditional medicine and early cosmetics as a mild abrasive. Adopted by the cosmetics industry as an anti-caking agent and absorbent in powders and color cosmetics.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR