Calcium hydrogenphosphate dihydrate supplier

Name
Calcium hydrogenphosphate dihydrate
EINECS 231-826-1
CAS No. 7789-77-7
Article Data230
CAS DataBase
Density 2.31 g/cm³
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
Transport Information
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;
PSA 111.69000
LogP -0.18080

Synthetic route

: calcium hydrogen phosphate dihydrate

: 7789-77-7
calcium hydrogen phosphate

Conditions

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;;

: disodium hydrogenphosphate

: calcium chloride

: 7789-77-7
calcium hydrogen phosphate

Conditions

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

: 2C8H18O4P(1-)*4C8H19O4P*Ca(2+)

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
With calcium methylate In methanol at 150℃; for 48h; Autoclave;	45%

: diammonium phosphate

: 13477-34-4
calcium(II) nitrate

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water for 0.0333333h; pH=5 - 9;

: fluorosilicic acid

: 86119-84-8, 7664-38-2
phosphoric acid

: calcium oxide

A: 7789-77-7
calcium hydrogen phosphate

B: calcium fluoride

C: tricalcium diphosphate

D: hydroxyapatite

E: 112926-00-8, 7631-86-9
silica gel

Conditions

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.;

...Expand

: tricalcium diphosphate

: 10102-44-0
Nitrogen dioxide

A: 7789-77-7
calcium hydrogen phosphate

B: 13477-34-4
calcium(II) nitrate

Conditions

Conditions	Yield
reaction of NO2 with moist Ca phosphate;;
reaction of NO2 with moist Ca phosphate;;

...Expand

: 7697-37-2
nitric acid

A: 7789-77-7
calcium hydrogen phosphate

B: calcium dihydrogen phosphate

C: 13477-34-4
calcium(II) nitrate

Conditions

Conditions	Yield
With phosphate minerals Decompn. of phosphate minerals by HNO3;;

...Expand

: 14808-79-8
Sulfate

: 14265-44-2
Phosphate

: calcium hydroxide

A: 7789-77-7
calcium hydrogen phosphate

B: calcium sulfate

Conditions

Conditions	Yield
In neat (no solvent) calcination of ppt.;;

...Expand

: 7722-76-1
ammonium dihydrogen phosphate

: calcium sulfate dihydrate

A: 7789-77-7
calcium hydrogen phosphate

B: ammonium sulfate

C: 7732-18-5
water

Conditions

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)

...Expand

: 14887-42-4
potassium dihydrophosphate*H3PO4

A: 7789-77-7
calcium hydrogen phosphate

B: potassium dihydrogenphosphate

Conditions

Conditions	Yield
With CaCO3 In water
With calcium carbonate In water

: dolomite

: 86119-84-8, 7664-38-2
phosphoric acid

A: 7789-77-7
calcium hydrogen phosphate

B: magnesium dihydrogen phosphate

C: magnesium phosphate dibasic trihydrate

Conditions

Conditions	Yield
Kinetics; byproducts: CO2, H2O; decomposn. by H3PO4 (10, 15, 20, 30% P2O5) at 50 and 80°C; elem. anal., potentiometry, conductometry;

...Expand

: 7647-01-0
hydrogenchloride

: hydroxyapatite

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
With ammonia In hydrogenchloride slow pptn. from a soln. of bone ash in HCl by aq. NH3 at >68°C;;
shaking of bone ash with HCl;;

: diammonium hydrogenphosphate

: calcium(II) chloride dihydrate

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water soln. of (NH4)2HPO4 heated at 373+/-10 K under reflux and stirring; to this hot soln. aq. soln. of CaCl2 added slowly; suspn. aged for 24 h at 373 K; solid filtered; washed (H2O); dried at 573+/-10 K for 24 h; elem. anal.;

: hydroxyapatite

: 86119-84-8, 7664-38-2
phosphoric acid

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In further solvent(s) by treating hydroxyapatite with H3PO4; heat treatment at 25-200°C; XRD- and IR data;

: tricalcium diphosphate

: 7732-18-5
water

A: 7789-77-7
calcium hydrogen phosphate

B: calcium dihydrogen phosphate

Conditions

Conditions	Yield
With carnallite In water
With magnesium chloride In water byproducts: CaCl2;
With potassium salts In water

...Expand

: tricalcium diphosphate

: 7732-18-5
water

: phosphorus pentoxide

: calcium hydroxide

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water pptn.;;

...Expand

: tricalcium diphosphate

: 7732-18-5
water

: calcium hydroxide

A: 7789-77-7
calcium hydrogen phosphate

B: calcium dihydrogen phosphate

Conditions

Conditions	Yield
In water under pressure;;
In water under pressure;;

...Expand

: calcium tetrahydrogen phosphate

: 7732-18-5
water

A: 7789-77-7
calcium hydrogen phosphate

B: tricalcium phosphate hydrate

Conditions

Conditions	Yield
In water 4 h treatment of 1 g CaHPO4 with 10 g H2O at 280-300°C;; aggregate of fine needles;;

...Expand

: calcium tetrahydrogen phosphate

: 7732-18-5
water

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water hydrolysis;;

: 86119-84-8, 7664-38-2
phosphoric acid

: 7732-18-5
water

: calcium hydroxide

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water neutralisation of 60 - 85% H3PO4 with CaCO3;;

...Expand

: calcium hydrogen phosphate dihydrate

: sodium fluoride

A: 7789-77-7
calcium hydrogen phosphate

B: calcium fluoride

: hydroxylapatite

Conditions

Conditions	Yield
In water byproducts: H2O, PO4(3-); dicalcium phosphate is added to stirred soln. of NaF (pH 7) at 25°C for 1 h; filtn.; XRD;

...Expand

: tricalcium diphosphate

: calcium oxide

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
With sulfuric acid In water
In water

: tricalcium diphosphate

: 7697-37-2
nitric acid

: calcium oxide

A: 7789-77-7
calcium hydrogen phosphate

B: 13477-34-4
calcium(II) nitrate

Conditions

Conditions	Yield
In water pptn.;;

...Expand

: 7647-01-0
hydrogenchloride

: tricalcium diphosphate

: calcium oxide

A: 7789-77-7
calcium hydrogen phosphate

B: calcium chloride

Conditions

Conditions	Yield
With iron(II) chloride In water byproducts: FeCl3; pptn.;;

...Expand

: 14265-44-2
Phosphate

: calcium oxide

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In water reaction of alkali phosphates with CaO;;
In water

: tricalcium diphosphate

: 7446-09-5
sulfur dioxide

A: 7789-77-7
calcium hydrogen phosphate

B: 752190-89-9
calcium sulfite

Conditions

Conditions	Yield
In water
In water

...Expand

: tricalcium diphosphate

: 7782-99-2
sulphurous acid

A: 7789-77-7
calcium hydrogen phosphate

B: calcium sulfate

Conditions

Conditions	Yield
With air In water pptn.;;
In water

...Expand

: calcium metaphosphate

: hydrogen cation

: 7789-77-7
calcium hydrogen phosphate

Conditions

Conditions	Yield
In not given in acidic soln.;;

: tricalcium diphosphate

A: 7789-77-7
calcium hydrogen phosphate

B: calcium dihydrogen phosphate

Conditions

Conditions	Yield
With nitric acid; Nitrate In water use of alkali nitrate;;
With carbon dioxide In water CO2 from industrial process;;
With hydrogenchloride; calcium chloride In water attack by dild. HCl in presence of CaCl2;;

: 7789-77-7
calcium hydrogen phosphate

: calcium pyrophosphate

Conditions

Conditions	Yield
In neat (no solvent, solid phase) CaHPO4 (14.5 mmol) was heated at 350°C under vac. (5E-3 Torr) for4 d; XRD studies;	99.5%
In neat (no solvent, solid phase) CaHPO4 was pressed at 8 tons for 60 s and heated under vac. (5E-3 Torr) to 400°C for 6 d; XRD studies;

: 7789-77-7
calcium hydrogen phosphate

: calcium pyrophosphate

: calcium pyrophosphate

Conditions

Conditions	Yield
In neat (no solvent, solid phase) CaHPO4 (14.7 mmol) was pressed at 8 tons for 60 s and heated at 600°C for 24 h; XRD studies;	A n/a B 98.5%

: 7789-77-7
calcium hydrogen phosphate

: TTCP

Reaxys ID: 11388391: Reaxys ID: 11388391

: 7789-77-7
calcium hydrogen phosphate

: calcium hydroxide

: calcium hydroxyapatite

Conditions

Conditions	Yield
With acetic acid In water at 95℃; for 16 - 24h; pH=7; Product distribution / selectivity;
With propionic acid In water at 95℃; for 24h; Product distribution / selectivity;

: 7789-77-7
calcium hydrogen phosphate

: sodium fluoride

: disodium hydrogenphosphate

Conditions

Conditions	Yield
In water byproducts: CaF; pptn. of CaF2 from aq. suspension;; in soln.;;

: 7789-77-7
calcium hydrogen phosphate

: 7681-38-1
sodium hydrogen sulfate

: calcium oxide

A: 86119-84-8, 7664-38-2
phosphoric acid

B: 1310-73-2
sodium hydroxide

Conditions

Conditions	Yield
With sulfuric acid In water byproducts: CaSO4, Ca3(PO4)2; react. of CaHPO4 with a satd. soln. of NaHSO4 (from technical alkali disulfate) in H2SO4; leaching mass; react. of NaH2PO4 soln. with CaO by pptn. of CaHPO4, reaction of filtrate containing Na2HPO4 with CaO in water;;

...Expand

: 7789-77-7
calcium hydrogen phosphate

: 144-55-8
sodium hydrogencarbonate

: 7647-14-5
sodium chloride

: disodium hydrogenphosphate

Conditions

Conditions	Yield
In water heating a CaHPO4/CaSO4-mixture with NaCl and NaHCO3 in aq. suspension, filtration;; soln. contains Na2HPO4, purity 99.6%;;
In water heating a CaHPO4/CaSO4-mixture with NaCl and NaHCO3 in aq. suspension, filtration;; soln. contains Na2HPO4, purity 99.6%;;

...Expand

: 7789-77-7
calcium hydrogen phosphate

: 17341-25-2
sodium cation

: disodium hydrogenphosphate

Conditions

Conditions	Yield
With CO2 or citric acid In water ion-exchange at zeolithe using a soln. of CaHPO4 in CO2-containing H2O or dild. citric acid;; in soln.;;

: 7789-77-7
calcium hydrogen phosphate

: 7697-37-2
nitric acid

: 13477-34-4
calcium(II) nitrate

Conditions

Conditions	Yield
In not given reaction of mono calcium phosphate with >70.8% HNO3-solution;;

: 7789-77-7
calcium hydrogen phosphate

: 1310-73-2
sodium hydroxide

: sodium phosphate

Conditions

Conditions	Yield
In water byproducts: Ca3(PO4)2; reaction of CaHPO4 with NaOH, regeneration of CaHPO4 by treatment of Ca3(PO4)2 with Ca(H2PO4)2;; in soln.;;

: 7789-77-7
calcium hydrogen phosphate

: 7664-93-9
sulfuric acid

: calcium sulfate

Conditions

Conditions	Yield
In neat (no solvent)
In neat (no solvent)

: 7789-77-7
calcium hydrogen phosphate

: 497-19-8
sodium carbonate

: disodium hydrogenphosphate

Conditions

Conditions	Yield
In water byproducts: CaCO3; pptn. of CaCO3 with a soln. containing 200g Na2CO3/l;; in soln.;;

: 7789-77-7
calcium hydrogen phosphate

: 7803-63-6
ammonium bisulfate

: 7722-76-1
ammonium dihydrogen phosphate

Conditions

Conditions	Yield
CaHPO4 was treated with equivalent amount of NH4HSO4;;
CaHPO4 was treated with equivalent amount of NH4HSO4;;

: 7789-77-7
calcium hydrogen phosphate

: 7757-82-6
sodium sulfate

: calcium hydroxide

: 1310-73-2
sodium hydroxide

Conditions

Conditions	Yield
In not given reaction of Na2SO4 soln. with CaHPO4; heating formed Na2HPO4 soln. with Ca(OH)2 under formation of NaOH and CaHPO4;;

...Expand

: 7789-77-7
calcium hydrogen phosphate

: disodium hydrogenphosphate

Conditions

Conditions	Yield
With soda slag In water pptn. of Ca-silicate with soda-slag;; in soln.; since the crude soda slag contains Na2S and phosphate, all heavy metal impurities are coprecipitated and the residual P content of the slag will be regained;;

: 7789-77-7
calcium hydrogen phosphate

: 7440-44-0
pyrographite

: phosphorus

Conditions

Conditions	Yield
redn. CaHPO4 prepared from bone ashes;

: 7789-77-7
calcium hydrogen phosphate

: potassium dihydrogenphosphate

Conditions

Conditions	Yield
With KHSO4 at 50°C;
With potassium hydrogensulfate at 50°C;

: 7789-77-7
calcium hydrogen phosphate

: 584-08-7
potassium carbonate

: potassium calcium phosphate

Conditions

Conditions	Yield
In neat (no solvent) 3 h calcination at 1200°C;;
In neat (no solvent) 3 h calcination at 1200°C;;

: 7789-77-7
calcium hydrogen phosphate

: 584-08-7
potassium carbonate

: calcium carbonate

: Ca10K(PO4)7

Conditions

Conditions	Yield
In neat (no solvent, solid phase) grounding, annealing at 900 to 950°C for 80 to 100 h; progress of the reaction monitored by X-ray diffraction;

...Expand

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 hydrogen phosphate(7789-77-7) is believed to be precursor of apatite and is found in guano-rich caves; formed by the interaction of guano with calcite and clay at a low ph

Calcium hydrogenphosphate dihydrate Toxicity Data With Reference

Inhalation:Material is irritating to mucous membranes and upper respiratory tract. May be harmful if inhaled.
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

Hazard Codes : Xi
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.

Product Name

Calcium hydrogenphosphate dihydrate

Synthetic route

Calcium hydrogenphosphate dihydrate Chemical Properties

Calcium hydrogenphosphate dihydrate Uses

Calcium hydrogenphosphate dihydrate Toxicity Data With Reference

Calcium hydrogenphosphate dihydrate Consensus Reports

Calcium hydrogenphosphate dihydrate Safety Profile

Calcium hydrogenphosphate dihydrate Specification

Related Products

Hot Products