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Cas Database |
| Name |
Calcium hydrogenphosphate dihydrate |
EINECS | 231-826-1 |
| CAS No. | 7789-77-7 | Density | 2.31 g/cm3 |
| PSA | 111.69000 | LogP | -0.18080 |
| Solubility | Slightly soluble in water. Soluble in dilute hydrochloric, nitric, and acetic acid. Insoluble in alcohol | Melting Point |
109°C -H?O |
| Formula | CaHPO4.2(H2O) | Boiling Point | 158oC at 760 mmHg |
| Molecular Weight | 136.057 | Flash Point | N/A |
| Transport Information | N/A | Appearance | white crystalline solid |
| Safety | 26-36 | Risk Codes | 36/37/38 |
| Molecular Structure |
|
Hazard Symbols |
 Xi
|
| Synonyms |
Emcompress;Emcompress Special;Monohydrogen monocalciumphosphate dihydrate;Parmcompress;Tri-Compress;Phosphoricacid, calcium salt (1:1), dihydrate (8CI,9CI);Bekapress D 2;Bonit;Budit 222;Calcium hydrogen phosphate (CaHPO4) hydrate (1:2);Calcium hydrogen phosphatedihydrate;Calcium monohydrogen orthophosphate dihydrate;Calcium monohydrogenphosphate dihydrate;Calcium phosphate (CaHPO4) dihydrate;Calcium phosphatedihydrate;Calipharm;Dibasic calcium phosphate dihydrate;Calcium hydrogen phosphate; |
Article Data | 230 |
Calcium hydrogenphosphate dihydrate Synthetic route
- 7789-77-7
calcium hydrogen phosphate
| Conditions | Yield |
|---|---|
| In melt byproducts: Ca3(PO4)2*99H2O; melting with decompn. at 36°C;; | 99.85% |
| With (NH4)2CO3 or NH4H2PO4 In water byproducts: CaCO3, hydroxylapatite, P2O5; decompn. with aq. (NH4)2CO3 or aq. NH4H2PO4 soln. at various conditions;; P2O5 in soln.;; | |
| With phosphoric acid In not given byproducts: H2O; dissolving 95 g of dihydrate in 500 g 35 % H3PO4 at 25°C; heating at 100-110°C; filtration of hot soln.;; 6-8 fold washing with abs. alcohol, drying at 100°C; contains crystal water;; |
| Conditions | Yield |
|---|---|
| With potassium dihydrogenphosphate In water aq. CaCl2 soln;; 3 times washing with 330 ml aq. H3PO4, washing with abs. ethanol; pure; contains 0.04 mol H2O after calcination at 900.degreee.C;; | 95% |
| In not given addn. of CaCl2 to neutral Na2HPO4 soln.;; | |
| With hydrogenchloride; ammonia In water dissolving ppt. from aq. CaCl2 soln. and Na2HPO4 in HCl, dropwise addn. of 0.6 % aq. NH3 on water bath, replacement of vaporized H2O;; crystn. after 2-3 weeks;; | |
| With HCl; NH3 In water dissolving ppt. from aq. CaCl2 soln. and Na2HPO4 in HCl, dropwise addn. of 0.6 % aq. NH3 on water bath, replacement of vaporized H2O;; crystn. after 2-3 weeks;; | |
| In not given |
- 7789-77-7
calcium hydrogen phosphate
| Conditions | Yield |
|---|---|
| With calcium methylate In methanol at 150℃; for 48h; Autoclave; | 45% |
| Conditions | Yield |
|---|---|
| In water for 0.0333333h; pH=5 - 9; |
- 86119-84-8, 7664-38-2
phosphoric acid
A
- 7789-77-7
calcium hydrogen phosphate
E
- 112926-00-8, 7631-86-9
silica gel
| Conditions | Yield |
|---|---|
| In water Kinetics; byproducts: H2O; gastight neutralization reactor, stirring in turbulent regime, 23 °C, addn. of CaO (varying stochiometry) to the acid mixture; withdrawn samples filtered, anal.; |
| Conditions | Yield |
|---|---|
| reaction of NO2 with moist Ca phosphate;; | |
| reaction of NO2 with moist Ca phosphate;; |
| Conditions | Yield |
|---|---|
| With phosphate minerals Decompn. of phosphate minerals by HNO3;; |
| Conditions | Yield |
|---|---|
| In neat (no solvent) calcination of ppt.;; |
| Conditions | Yield |
|---|---|
| With NH3 In neat (no solvent) NH4H2PO4 from reaction of superphosphate with ammonia; addn. of further amounts of ammonia;; | |
| In neat (no solvent) |
- 14887-42-4
potassium dihydrophosphate*H3PO4
A
- 7789-77-7
calcium hydrogen phosphate
| Conditions | Yield |
|---|---|
| With CaCO3 In water | |
| With calcium carbonate In water |
Calcium hydrogenphosphate dihydrate Chemical Properties
Product Name:Calcium hydrogenphosphate dihydrate(7789-77-7)
CAS No:7789-77-7
MF: CaH5O6P
MW: 172.09
mp : 109°C
density : 2.44 g.cm3 (20 °C )
Solubility in water:Soluble
Synonyms of Calcium hydrogenphosphate dihydrate(7789-77-7): CALCII HYDROGENOPHOSPHAS DIHYDRICUS;CALCIUM HYDROGEN PHOSPHATE;CALCIUM HYDROGEN PHOSPHATE-2-HYDRATE;CALCIUM HYDROGENPHOSPHATE DIHYDRATE;CALCIUM MONOHYDROGEN PHOSPHATE DIHYDRATE;CALCIUM PHOSPHATE, DIBASIC;CALCIUM PHOSPHATE DIBASIC, DIHYDRATE;CALCIUM PHOSPHATE DIHYDRATE, DIBASIC
Molecular Structure of Calcium hydrogenphosphate dihydrate(7789-77-7):
Calcium hydrogenphosphate dihydrate Uses
Calcium hydrogenphosphate dihydrate Toxicity Data With Reference
Skin:Calcium hydrogen phosphate may cause skin irritation. May be harmful if absorbed through the skin.
Eyes:Calcium hydrogen phosphate cause eye irritation.
Ingestion:May be harmful if swallowed.
Calcium hydrogenphosphate dihydrate Consensus Reports
First Aid Measures:
Ingestion:If swallowed, wash out mouth with water provided person is conscious. Call a physician.
Inhalation:If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
Skin:In case of contact, immediately wash skin with soap and copious amounts of water.
Eyes:In case of contact, immediately flush eyes with copious amounts of water for at least 15 minutes.
Storage:Keep tightly closed.
Calcium hydrogenphosphate dihydrate Safety Profile
Risk Statements : 36/37/38
Safety Statements : 26-36
WGK Germany : 1
Calcium hydrogenphosphate dihydrate Specification
Personal Protection:Compatible chemical-resistant gloves. Chemical safety goggles.
Fire Fighting:Extinguish using Water spray. Carbon dioxide, dry chemical powder, or appropriate foam. Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
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