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Dicalcium phosphate
Cas No: 7789-77-7
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Calcium hydrogenphosphate dihydrate
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High quality Dicalcium Phosphate Dihydrate supplier in China
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Calcium hydrogenphosphate dihydrate CAS NO.7789-77-7
Cas No: 7789-77-7
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High Quality Food Grade Calcium hydrogenphosphate dihydrate USP HACCP Manufacturer
Cas No: 7789-77-7
USD $ 0.1-0.1 / Gram 1 Gram 100 Metric Ton/Year Xi'an Xszo Chem Co., Ltd. Contact Supplier
Dicalcium phosphate
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Factory Supply Dicalcium Phosphate Dihydrate
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Manufacturer high quality Dicalcium Phosphate Anhydrous CAS NO.: 7789-77-7
Cas No: 7789-77-7
USD $ 60.0-80.0 / Kilogram 1 Kilogram 5000 Metric Ton/Month Xi'an Julong Bio-Tech Co., Ltd. Contact Supplier
Pharma Grade Dibasic calcium phosphate dihydrate / DICALCIUM PHOSPHATE DIHYDRATE Powder
Cas No: 7789-77-7
USD $ 9.0-9.0 / Kilogram 25 Kilogram 100 Metric Ton/Month Shaanxi Greenyo Biotech Co., Ltd. Contact Supplier
Dicalcium Phosphate Dihydrate
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7789-77-7 Usage

Chemical Properties

white crystalline solid

Production Methods

Calcium phosphates are usually manufactured by reacting very pure phosphoric acid with calcium hydroxide, Ca(OH)2 obtained from limestone, in stoichiometric ratio in aqueous suspension followed by drying at a temperature that will allow the correct hydration state to be achieved. After drying, the coarse-grade material is obtained by means of a classification unit; the fine particle-size material is obtained by milling.

Pharmaceutical Applications

Dibasic calcium phosphate dihydrate is widely used in tablet formulations both as an excipient and as a source of calcium and phosphorus in nutritional supplements. It is one of the more widely used materials, particularly in the nutritional/health food sectors. It is also used in pharmaceutical products because of its compaction properties, and the good flow properties of the coarsegrade material. The predominant deformation mechanism of dibasic calcium phosphate coarse-grade is brittle fracture and this reduces the strain-rate sensitivity of the material, thus allowing easier transition from the laboratory to production scale. However, dibasic calcium phosphate dihydrate is abrasive and a lubricant is required for tableting, for example about 1% w/w of magnesium stearate or about 1% w/w of sodium stearyl fumarate is commonly used. Two main particle-size grades of dibasic calcium phosphate dihydrate are used in the pharmaceutical industry. The milled material is typically used in wet-granulated, roller-compacted or slugged formulations. The ‘unmilled’ or coarse-grade material is typically used in direct-compression formulations. Dibasic calcium phosphate dihydrate is nonhygroscopic and stable at room temperature. However, under certain conditions of temperature and humidity, it can lose water of crystallization below 1008℃. This has implications for certain types of packaging and aqueous film coating since the loss of water of crystallization appears to be initiated by high humidity and by implication high moisture vapor concentrations in the vicinity of the dibasic calcium phosphate dihydrate particles. Dibasic calcium phosphate dihydrate is also used in toothpaste and dentifrice formulations for its abrasive properties.

Chemical Properties

Dibasic calcium phosphate dihydrate is a white, odorless, tasteless powder or crystalline solid. It occurs as monoclinic crystals.

Safety

Dibasic calcium phosphate dihydrate is widely used in oral pharmaceutical products, food products, and toothpastes, and is generally regarded as a nontoxic and nonirritant material. However, oral ingestion of large quantities may cause abdominal discomfort.

Uses

Replenisher (calcium); pharmaceutic aid (tablet base).

Uses

Dicalcium phosphate dihydrate is only slightly soluble at ordinary temperatures of mixing and holding doughs and batters. As a result, it does not release acidity for reaction with soda until late in the baking stage, when the temperature reaches 135 to 140°F. Since DCP·2H20 does not begin to react below 135°F, and the interior structure of a baked product begins to firm at about 160°F, a product that bakes rapidly may not provide sufficient time for complete release of all the C02. DCP·2H2 0, therefore, cannot be used in biscuits, pancakes or any baked product that is completely baked in less than 20 min.Dicalcium phosphate dihydrate is seldom used by itself in leavening systems but is usually combined with fasterreacting acidic phosphates. Its major applications are in cake mixes, frozen bread doughs, and other products requiring a half hour or more to complete baking. It has a low neutralizing value, and therefore more DCP·2H20 is required to neutralize a given amount of soda than for other phosphate-leavening acids.

Regulatory Status

GRAS listed. Accepted as a food additive in Europe. Included in the FDA Inactive Ingredients Database (oral capsules and tablets). Included in nonparenteral medicines licensed in Europe. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Incompatibilities

Dibasic calcium phosphate dihydrate should not be used to formulate tetracycline antibiotics. Dibasic calcium phosphate dihydrate has been reported to be incompatible with indomethacin, aspirin, aspartame, ampicillin, cephalexin, and erythromycin. The surface of dibasic calcium phosphate dihydrate is alkaline and consequently it should not be used with drugs that are sensitive to alkaline pH.

Uses

Dicalcium Phosphate, Dihydrate is a source of calcium and phosphorus that also functions as a dough conditioner and bleaching agent. It functions as a dough conditioner in bakery products, as a bleaching agent in flour, as a source of calcium and phosphorus in cereal products, and as a source of calcium for alginate gels. It contains approximately 23% calcium. It is practically insoluble in water. It is also termed dibasic calcium phosphate, dihydrate and calcium phosphate dibasic, hydrous. It is used in dessert gels, baked goods, cereals, and breakfast cereals.

storage

Dibasic calcium phosphate dihydrate is a nonhygroscopic, relatively stable material. However, under certain conditions the dihydrate can lose water of crystallization. This has implications for both storage of the bulk material and coating and packaging of tablets containing dibasic calcium phosphate dihydrate. The bulk material should be stored in a well-closed container in a cool, dry place.

Purification Methods

Crystallise it from a near-saturated solution in 50% aqueous reagent grade phosphoric acid at 100o by filtering through fritted glass and cooling to room temperature. The crystals are filtered off, and this process is repeated three times using fresh acid. For the final crystallisation the solution is cooled slowly with constant stirring to give thin plate crystals that are filtered off on a fritted glass funnel, washed free of acid with anhydrous acetone and dry in a vacuum desiccator [Egan et al.J Am Chem Soc 78 1811 1956].

Brand name

CalStar (FMC); D.C.P. (Parke-Davis).
InChI:InChI=1/Ca.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+2;;;/p-3

7789-77-7 Well-known Company Product Price

Brand (Code)Product description CAS number Packaging Price Detail
Alfa Aesar (40233)  Calcium hydrogen phosphate dihydrate, 98% min    7789-77-7 1kg 883.0CNY Detail
Alfa Aesar (40233)  Calcium hydrogen phosphate dihydrate, 98% min    7789-77-7 5kg 2894.0CNY Detail
Sigma-Aldrich (04231)  Calciumphosphatedibasicdihydrate  puriss., meets analytical specification of Ph. Eur., BP, USP, 98-102.5% 7789-77-7 04231-1KG 783.90CNY Detail
Sigma-Aldrich (307653)  Calciumhydrogenphosphatedihydrate  98% 7789-77-7 307653-500G 687.96CNY Detail
Vetec (V900025)  Calciumhydrogenphosphatedihydrate  Vetec reagent grade 7789-77-7 V900025-500G 59.67CNY Detail
Vetec (V900025)  Calciumhydrogenphosphatedihydrate  Vetec reagent grade 7789-77-7 V900025-6X500G 298.35CNY Detail

7789-77-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name calcium hydrogenphosphate dihydrate

1.2 Other means of identification

Product number -
Other names Calciumhydrogenphosphate,dih

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:7789-77-7 SDS

7789-77-7Synthetic route

calcium hydrogen phosphate dihydrate

calcium hydrogen phosphate dihydrate

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
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

disodium hydrogenphosphate

calcium chloride

calcium chloride

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
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+)

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

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

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

diammonium phosphate

calcium(II) nitrate
13477-34-4

calcium(II) nitrate

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In water for 0.0333333h; pH=5 - 9;
fluorosilicic acid

fluorosilicic acid

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

phosphoric acid

calcium oxide

calcium oxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium fluoride

calcium fluoride

C

tricalcium diphosphate

tricalcium diphosphate

D

hydroxyapatite

hydroxyapatite

Conditions
ConditionsYield
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.;
tricalcium diphosphate

tricalcium diphosphate

Nitrogen dioxide
10102-44-0

Nitrogen dioxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium(II) nitrate
13477-34-4

calcium(II) nitrate

Conditions
ConditionsYield
reaction of NO2 with moist Ca phosphate;;
reaction of NO2 with moist Ca phosphate;;
nitric acid
7697-37-2

nitric acid

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium dihydrogen phosphate

calcium dihydrogen phosphate

C

calcium(II) nitrate
13477-34-4

calcium(II) nitrate

Conditions
ConditionsYield
With phosphate minerals Decompn. of phosphate minerals by HNO3;;
Sulfate
14808-79-8

Sulfate

Phosphate
14265-44-2

Phosphate

calcium hydroxide

calcium hydroxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium sulfate

calcium sulfate

Conditions
ConditionsYield
In neat (no solvent) calcination of ppt.;;
ammonium dihydrogen phosphate
7722-76-1

ammonium dihydrogen phosphate

calcium sulfate dihydrate

calcium sulfate dihydrate

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

ammonium sulfate

ammonium sulfate

C

water
7732-18-5

water

Conditions
ConditionsYield
With NH3 In neat (no solvent) NH4H2PO4 from reaction of superphosphate with ammonia; addn. of further amounts of ammonia;;
In neat (no solvent)
potassium dihydrophosphate*H3PO4
14887-42-4

potassium dihydrophosphate*H3PO4

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

potassium dihydrogenphosphate

potassium dihydrogenphosphate

Conditions
ConditionsYield
With CaCO3 In water
With calcium carbonate In water
dolomite

dolomite

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

phosphoric acid

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

magnesium dihydrogen phosphate

magnesium dihydrogen phosphate

C

magnesium phosphate dibasic trihydrate

magnesium phosphate dibasic trihydrate

Conditions
ConditionsYield
Kinetics; byproducts: CO2, H2O; decomposn. by H3PO4 (10, 15, 20, 30% P2O5) at 50 and 80°C; elem. anal., potentiometry, conductometry;
hydrogenchloride
7647-01-0

hydrogenchloride

hydroxyapatite

hydroxyapatite

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
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

diammonium hydrogenphosphate

calcium(II) chloride dihydrate

calcium(II) chloride dihydrate

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
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

hydroxyapatite

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

phosphoric acid

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

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

tricalcium diphosphate

water
7732-18-5

water

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium dihydrogen phosphate

calcium dihydrogen phosphate

Conditions
ConditionsYield
With carnallite In water
With magnesium chloride In water byproducts: CaCl2;
With potassium salts In water
tricalcium diphosphate

tricalcium diphosphate

water
7732-18-5

water

phosphorus pentoxide

phosphorus pentoxide

calcium hydroxide

calcium hydroxide

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In water pptn.;;
tricalcium diphosphate

tricalcium diphosphate

water
7732-18-5

water

calcium hydroxide

calcium hydroxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium dihydrogen phosphate

calcium dihydrogen phosphate

Conditions
ConditionsYield
In water under pressure;;
In water under pressure;;
calcium tetrahydrogen phosphate

calcium tetrahydrogen phosphate

water
7732-18-5

water

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

tricalcium phosphate hydrate

tricalcium phosphate hydrate

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

calcium tetrahydrogen phosphate

water
7732-18-5

water

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In water hydrolysis;;
phosphoric acid
86119-84-8, 7664-38-2

phosphoric acid

water
7732-18-5

water

calcium hydroxide

calcium hydroxide

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In water neutralisation of 60 - 85% H3PO4 with CaCO3;;
calcium hydrogen phosphate dihydrate

calcium hydrogen phosphate dihydrate

sodium fluoride

sodium fluoride

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium fluoride

calcium fluoride

hydroxylapatite

hydroxylapatite

Conditions
ConditionsYield
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;
tricalcium diphosphate

tricalcium diphosphate

calcium oxide

calcium oxide

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
With sulfuric acid In water
In water
tricalcium diphosphate

tricalcium diphosphate

nitric acid
7697-37-2

nitric acid

calcium oxide

calcium oxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium(II) nitrate
13477-34-4

calcium(II) nitrate

Conditions
ConditionsYield
In water pptn.;;
hydrogenchloride
7647-01-0

hydrogenchloride

tricalcium diphosphate

tricalcium diphosphate

calcium oxide

calcium oxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium chloride

calcium chloride

Conditions
ConditionsYield
With iron(II) chloride In water byproducts: FeCl3; pptn.;;
Phosphate
14265-44-2

Phosphate

calcium oxide

calcium oxide

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In water reaction of alkali phosphates with CaO;;
In water
tricalcium diphosphate

tricalcium diphosphate

sulfur dioxide
7446-09-5

sulfur dioxide

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium sulfite
752190-89-9

calcium sulfite

Conditions
ConditionsYield
In water
In water
tricalcium diphosphate

tricalcium diphosphate

sulphurous acid
7782-99-2

sulphurous acid

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium sulfate

calcium sulfate

Conditions
ConditionsYield
With air In water pptn.;;
In water
calcium metaphosphate

calcium metaphosphate

hydrogen cation

hydrogen cation

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

Conditions
ConditionsYield
In not given in acidic soln.;;
tricalcium diphosphate

tricalcium diphosphate

A

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

B

calcium dihydrogen phosphate

calcium dihydrogen phosphate

Conditions
ConditionsYield
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;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

calcium pyrophosphate

calcium pyrophosphate

Conditions
ConditionsYield
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;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

calcium pyrophosphate

calcium pyrophosphate

calcium pyrophosphate

calcium pyrophosphate

Conditions
ConditionsYield
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%
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

TTCP

TTCP

Reaxys ID: 11388391

Reaxys ID: 11388391

calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

calcium hydroxide

calcium hydroxide

calcium hydroxyapatite

calcium hydroxyapatite

Conditions
ConditionsYield
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;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium fluoride

sodium fluoride

disodium hydrogenphosphate

disodium hydrogenphosphate

Conditions
ConditionsYield
In water byproducts: CaF; pptn. of CaF2 from aq. suspension;; in soln.;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium hydrogen sulfate
7681-38-1

sodium hydrogen sulfate

calcium oxide

calcium oxide

A

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

phosphoric acid

B

sodium hydroxide
1310-73-2

sodium hydroxide

Conditions
ConditionsYield
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;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium hydrogencarbonate
144-55-8

sodium hydrogencarbonate

sodium chloride
7647-14-5

sodium chloride

disodium hydrogenphosphate

disodium hydrogenphosphate

Conditions
ConditionsYield
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%;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium cation
17341-25-2

sodium cation

disodium hydrogenphosphate

disodium hydrogenphosphate

Conditions
ConditionsYield
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.;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

nitric acid
7697-37-2

nitric acid

calcium(II) nitrate
13477-34-4

calcium(II) nitrate

Conditions
ConditionsYield
In not given reaction of mono calcium phosphate with >70.8% HNO3-solution;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium hydroxide
1310-73-2

sodium hydroxide

sodium phosphate

sodium phosphate

Conditions
ConditionsYield
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.;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sulfuric acid
7664-93-9

sulfuric acid

calcium sulfate

calcium sulfate

Conditions
ConditionsYield
In neat (no solvent)
In neat (no solvent)
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium carbonate
497-19-8

sodium carbonate

disodium hydrogenphosphate

disodium hydrogenphosphate

Conditions
ConditionsYield
In water byproducts: CaCO3; pptn. of CaCO3 with a soln. containing 200g Na2CO3/l;; in soln.;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

ammonium bisulfate
7803-63-6

ammonium bisulfate

ammonium dihydrogen phosphate
7722-76-1

ammonium dihydrogen phosphate

Conditions
ConditionsYield
CaHPO4 was treated with equivalent amount of NH4HSO4;;
CaHPO4 was treated with equivalent amount of NH4HSO4;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

sodium sulfate
7757-82-6

sodium sulfate

calcium hydroxide

calcium hydroxide

sodium hydroxide
1310-73-2

sodium hydroxide

Conditions
ConditionsYield
In not given reaction of Na2SO4 soln. with CaHPO4; heating formed Na2HPO4 soln. with Ca(OH)2 under formation of NaOH and CaHPO4;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

disodium hydrogenphosphate

disodium hydrogenphosphate

Conditions
ConditionsYield
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;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

pyrographite
7440-44-0

pyrographite

phosphorus

phosphorus

Conditions
ConditionsYield
redn. CaHPO4 prepared from bone ashes;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

potassium dihydrogenphosphate

potassium dihydrogenphosphate

Conditions
ConditionsYield
With KHSO4 at 50°C;
With potassium hydrogensulfate at 50°C;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

potassium carbonate
584-08-7

potassium carbonate

potassium calcium phosphate

potassium calcium phosphate

Conditions
ConditionsYield
In neat (no solvent) 3 h calcination at 1200°C;;
In neat (no solvent) 3 h calcination at 1200°C;;
calcium hydrogen phosphate
7789-77-7

calcium hydrogen phosphate

potassium carbonate
584-08-7

potassium carbonate

calcium carbonate

calcium carbonate

Ca10K(PO4)7

Ca10K(PO4)7

Conditions
ConditionsYield
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;
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