Dicalcium Phosphate Dihydrate

Dicalcium Phosphate Dihydrate molecular structure
molecular structure · PubChem
AKA: 7757-93-9, CALCIUM HYDROGEN PHOSPHATE, Calcium phosphate dibasic, Calcium hydrogenphosphate, Dibasic calcium phosphate, Dibasic, Secondary Calcium phosphate, Biofos, Phosphoric acid, Calcium salt (1:1)
Synthetic
Clean
Calcium hydrogenorthophosphate
Effective at 24.65%
Solubility Sparingly soluble in water. Insoluble in ethanol
Formula
CaHO4P
Mol. Weight
136.06
CAS #
7757-93-9, 7789-77-7
Form
Powder
State
Dry Powder, Pellets or Large Crystals; Pellets or Large Crystals; Other Solid; Dry Powder
Functions
Abrasive
Opacifying
Oral Care
Physical Exfoliant
Adds Opacity
Antioxidant Protection
Reduces Inflammation
Brightens Skin
Gently polishes surface
Supports dental health
Creates creamy opacity
Traditional Use
The hydrated form of dicalcium phosphate developed for cosmetic and pharmaceutical use in the 20th century. Functions as a mineral bulking agent and mild abrasive, particularly in powder formulations.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.3%
49.0%
0%69%
Reported use
CIR reported use: 0.3-47.7 | 6.8-49
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
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.
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR