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Monodicalcium phosphate
- Chemical
formula
CaHPO4.Ca(H2PO4)2.H2O
- Identification
.....CAS/EINECS
No: 10103-46-5/233-283-6
-
Process
Monodicalcium
phosphate, chemically a intermediate between
..dicalcium phosphate
and monocalcium phosphate, is obtained by
..reaction of
a calcium source with purified feed grade phosphoric
..acid or by reaction
of dicalcium phosphate feed grade with purified
..feed grade phosphoric
acid. According to the reaction, the ratio
..monocalcium-/dicalcium
phosphate can vary.
- Chemical
characteristics (typical)
|
Total phosphorus |
20
- 22% |
|
Soluble phosphorus: |
|
|
in
2% citric acid |
>95% |
|
in
alk. amm. citrate |
>95% |
|
in
water |
>50% |
|
Calcium |
19.5
- 23% |
|
Ca : P ratio |
0.9
- 1.1 : 1 |
|
pH (1% solution) |
3.5
- 4.5 |
|
Ash insoluble in HCl |
0,9-
1,2 % |
|
Moisture |
0.7 |
|
Undesirable substances |
conform
to the European Directives |
- Physical
properties (typical)
| appearance |
granulated
or powder
colour off white |
| apparent
density |
loose 0.8 - 1.0 kg/dm3
tapped 0.9 - 1.1 kg/dm3 |
-
Handling, storage, toxicity
| Handling |
avoid
dust formation |
| Storage |
in
a dry place |
| Shelf
life |
minimum
3 years |
| Toxicity |
non
toxic |
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