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Tricalcium Phosphate
AKA “7758-87-4, Synthos, Tricalcium diphosphate, Calcium orthophosphate, Phosphoric acid, calcium salt (2:3), Tricalcium orthophosphate, Calcigenol simple, Tertiary calcium phosphate, Calcium phosphate, tribasic”
Ingredient
Ingredient Facts
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
Ingredient · Abrasive · EWG: 1
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)
See origin →
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.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Safety Assessment of Phosphoric Acid and Its Salts as Used in Cosmetics
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
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Calcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
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Dicalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Dicalcium Phosphate Dihydrate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Metaphosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Phosphoric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Tricalcium Phosphate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Calcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
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Dicalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Dicalcium Phosphate Dihydrate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Phosphoric Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Tricalcium Phosphate
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Composite Aerogel Scaffolds Containing Flexible Silica Nanofiber and Tricalcium Phosphate Enable Skin Regeneration.
Wang X, Yuan Z, Shafiq M, Cai G, Lei Z et al.
ACS applied materials & interfaces, 2024
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR