Calcium Phosphate, dibasic dihydrate
Calcium phosphate dibasic dihydrate is used as an excipient in pharmaceutical products and it is also used in dietary supplements as a source of calcium.
It is also called DCP or dibasic calcium phosphate. Dibasic calcium phosphate is an insoluble and inorganic excipient.
Main Uses:
It is used as a tablet diluent.
It is also used as capsule diluent.
Other Uses:
It is used in toothpaste.
Used as a food additive.
It is used in poultry feed.
Calcium phosphate dibasic dihydrate is non-hygroscopic and is stable, but some time on specific conditions it may lose water of crystallization.
DCP needs a swelling type of disintegrant when used as diluent.
Grades Of DCP
It has two grades
Coarse grade
Milled grade
Milled grades are used as a diluent in wet granulation and dry granulation
The coarse grade is used as a diluent in dry granulation because it has good flow properties.
Properties
Dibasic calcium phosphate dihydrate or
DCP has good compaction properties.
DCP coarse grade deform by a brittle fracture.
Dibasic calcium phosphate dihydrate or DCP is abrasive
Incompatible
Dibasic calcium phosphate dihydrate is incompatible with following,
Aspirin
Ampicillin antibiotic
Aspartame a sweetener
Erythromycin antibiotic
DCP has an alkaline surface so it should not be used with alkaline pH-sensitive drugs.
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