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Calcium pyrophosphate

CAS Number
7790-76-3
EC Number
232-221-5
Chemical Formula
Ca.1/2H4O7P2
Molecular Weight
254.10 g/mol

Description

Calcium pyrophosphate ( CAS 7790-76-3 ), also known as dicalcium diphosphate and abbreviated as CPP, is an inorganic calcium salt used across food, pharmaceutical, and personal care manufacturing. It functions primarily as an acidity regulator, buffering agent, and mild abrasive, depending on the application sector. In oral care, CPP serves as a polishing and abrasive agent in toothpaste formulations. This material provides controlled enamel cleaning without excessive surface wear. Food manufacturers use it as an acidity regulator and leavening component in processed foods, baked goods, and dry mixes. It is particularly useful where pH stability during processing is critical. In pharmaceutical solid dosage forms, it acts as a calcium supplement excipient and diluent in tablet manufacturing. Personal care formulators also incorporate it into specialty powders and cleansing products where mild mechanical action is required. The material is supplied as a white, fine powder in varying particle sizes. These distributions suit specific abrasive or blending applications. Food-grade and USP pharmaceutical-grade specifications are the most commonly traded, with technical-grade material available for industrial uses. Bulk quantities are typically offered in multi-kilogram bags or supersacks. Smaller packaging is also available for laboratory and development-scale procurement to meet diverse manufacturing needs. Contact us for supply of Calcium pyrophosphate Request Quote

Other Names (Synonyms)

diphosphoric acid, calcium salt (2:1) | Dicalcium diphosphate (acidity regulator) | Ca2P2O7 | Dicalcium pyrophosphate | Diphosphoric acid, calcium salt (1:2) | Calcium phosphate (Ca2P2O7) | Diphosphoric acid, calcium salt | Pyrophosphoric acid, calcium salt (1:2) | CPP

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point1353 °C
Density3.09 g/cm³
Appearancewhite powder
ColorWhite
Odorat 100.00?%. odorless
FormPowder
Water SolubilitySoluble in hydrochloric acid and nitric acid. Insoluble in water.
Log P-3.420 (est)

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P271Use only outdoors or in a well-ventilated area.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code28353100
Storage Class11 - Combustible Solids
WGK (Germany)3