リン酸二水素カルシウム
WordNet
- a salt of phosphoric acid (同)orthophosphate, inorganic_phosphate
- carbonated drink with fruit syrup and a little phosphoric acid
- a white metallic element that burns with a brilliant light; the fifth most abundant element in the earths crust; an important component of most plants and animals (同)Ca, atomic number 20
PrepTutorEJDIC
- 〈U〉リン酸塩 / 《複数形で》リン酸肥料
- 『カルシウム』(金属元素;化学記号は『Ca』)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2014/08/31 17:22:22」(JST)
[Wiki en表示]
| Monocalcium phosphate |
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IUPAC name
Calcium dihydrogenphosphate
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Other names
Acid calcium phosphate
Calcium acid phosphate
Calcium diorthophosphate
Calcium biphosphate
Calcium superphosphate
Monobasic calcium phosphate
Monocalcium orthophosphate
Phosphoric acid, calcium salt (2:1)
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| Identifiers |
| CAS number |
7758-23-8 Y |
| PubChem |
24454 |
| Properties |
| Molecular formula |
CaH4P2O8 |
| Molar mass |
234.05 g/mol |
| Appearance |
white powder |
| Density |
2.220 g/cm3 |
| Melting point |
109 °C |
| Boiling point |
203 °C (decomposes) |
| Solubility in water |
2 g/100 mL |
| Solubility |
soluble in HCl, nitric acid, acetic acid |
| Refractive index (nD) |
1.5176 |
| Structure |
| Crystal structure |
triclinic |
| Hazards |
| EU Index |
Not listed |
| NFPA 704 |
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| Flash point |
Non-flammable |
| Related compounds |
| Other anions |
Calcium pyrophosphate |
| Other cations |
Magnesium phosphate
Dicalcium phosphate
Tricalcium phosphate
Strontium phosphate |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa) |
| Y (verify) (what is: Y/N?) |
| Infobox references |
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Monocalcium phosphate is an inorganic compound with the chemical formula Ca(H2PO4)2 ("ACMP" or "CMP-A" for anhydrous monocalcium phosphate). It is commonly found as the monohydrate (""MCP" or "MCP-M"), Ca(H2PO4)2·H2O (CAS# 10031-30-8). Both salts are colourless solids. They are used mainly as superphosphate fertilizers and are also popular leavening agents.[1]
Contents
- 1 Preparation
- 2 Applications
- 2.1 Use in fertilizers
- 2.2 Use as leavening agent
- 3 See also
- 4 References
- 5 Further reading
Preparation
Material of relatively high purity are, as required for baking, are produced by treating calcium hydroxide with phosphoric acid:
- Ca(OH)2 + 2 H3PO4 → Ca(H2PO4)2 + 2 H2O
Samples of Ca(H2PO4)2 tends to convert to dicalcium phosphate:
- Ca(H2PO4)2 → Ca(HPO4) + H3PO4
Applications
Use in fertilizers
Superphosphate fertilizers are produced by treatment of "phosphate rock" with acids. Using phosphoric acid, fluorapatite is converted to Ca(H2PO4)2:
- Ca5(PO4)3F + 7 H3PO4 → 5 Ca(H2PO4)2 + HF
This solid is called triple superphosphate. Several million tons are produced annually for use as fertilizers.
When sulfuric acid is used, the product contains phosphogypsum ( CaSO4·2H2O) and is called single superphosphate. [2]
Use as leavening agent
Calcium dihydrogen phosphate is used in the food industry as a leavening agent, i.e., to cause baked goods to rise. Because it is acidic, when combined with an alkali ingredient, commonly sodium bicarbonate (baking soda) or potassium bicarbonate, it reacts to produce carbon dioxide and a salt. Outward pressure of the carbon dioxide gas causes the rising effect. When combined in a ready-made baking powder, the acid and alkali ingredients are included in the right proportions such that they will exactly neutralize each other and not significantly affect the overall pH of the product. ACMP and MCP are fast acting, releasing most carbon dioxide within minutes of mixing. It is popularly used in pancake mixes. In double acting baking powders, MCP is often combined with the slow acting acid sodium acid pyrophosphate (SAPP).[3]
See also
References
- ^ Klaus Schrödter, Gerhard Bettermann, Thomas Staffel, Friedrich Wahl, Thomas Klein, Thomas Hofmann "Phosphoric Acid and Phosphates" in Ullmann’s Encyclopedia of Industrial Chemistry 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_465.pub3
- ^ Gunnar Kongshaug et al. "Phosphate Fertilizers" in Ullmann's Encyclopedia of Industrial Chemistry, 2002, Wiley-VCH, Weinheim. doi:10.1002/14356007.a19_421.pub2
- ^ John Brodie, John Godber "Bakery Processes, Chemical Leavening Agents" in Kirk-Othmer Encyclopedia of Chemical Technology 2001, John Wiley & Sons. doi:10.1002/0471238961.0308051303082114.a01.pub2
Further reading
- Havlin, J.L., J.D. Beaton, S.L. Tisdale, and W.L. Nelson. 2005. Soil Fertility and Fertilizers. 7th edn. Pearson Prentice Hall, N.J., ISBN 0130278246
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Calcium compounds
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- CaAl2O4
- CaB6
- CaBr2
- Ca(BrO3)2
- CaC2
- CaCN2
- Ca(CN)2
- CaCO3
- CaC2O4
- CaCl2
- Ca(ClO)2
- Ca(ClO3)2
- CaCrO4
- CaF2
- CaH2
- Ca(HCO3)2
- CaH2S2O6
- CaI2
- Ca(IO3)2
- Ca(MnO4)2
- CaN6
- Ca(NO3)2
- CaO
- CaO2
- Ca(OH)2
- CaP
- CaS
- CaSO3
- CaSO4
- CaSi2
- CaTiO3
- Ca2P2O7
- Ca2SiO4
- Ca3Al2O6
- Ca3(AsO4)2
- Ca3(BO3)2
- Ca3(C6H5O7)2
- Ca3N2
- Ca3P2
- Ca3(PO4)2
- Ca(H2PO4)2
- CaHPO4
- C36H70CaO4
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UpToDate Contents
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English Journal
- Phase composition control of calcium phosphate nanoparticles for tunable drug delivery kinetics and treatment of osteomyelitis. I. Preparation and drug release.
- Uskoković V1, Desai TA.
- Journal of biomedical materials research. Part A.J Biomed Mater Res A.2013 May;101(5):1416-26. doi: 10.1002/jbm.a.34426. Epub 2012 Oct 31.
- Developed in this study is a multifunctional material for simultaneous osseoinduction and drug delivery, potentially applicable in the treatment of osteomyelitis. It is composed of agglomerates of nanoparticles of calcium phosphate (CAP) with different monophasic contents. The drug-loading capacity
- PMID 23115118
- Obtaining Ca(H2PO4)(2)·H2O, monocalcium phosphate monohydrate, via monetite from brushite by using sonication.
- Sánchez-Enríquez J1, Reyes-Gasga J.
- Ultrasonics sonochemistry.Ultrason Sonochem.2013 May;20(3):948-54. doi: 10.1016/j.ultsonch.2012.10.019. Epub 2012 Nov 16.
- Brushite was synthesized by precipitation of calcium chloride (CaCl(2)) and sodium phosphate monobasic (Na(2)HPO(4)) dried in vacuum and monetite was obtained from this brushite by sonication with a frequency of 90kHz at 500W for 90min. Monetite itself was also transformed in Ca(H(2)PO(4))(2)·H(2)O
- PMID 23219258
- Effects of DCPD cement chemistry on degradation properties and cytocompatibility: comparison of MCPM/β-TCP and MCPM/HA formulations.
- Alge DL1, Goebel WS, Chu TM.
- Biomedical materials (Bristol, England).Biomed Mater.2013 Apr;8(2):025010. doi: 10.1088/1748-6041/8/2/025010. Epub 2013 Feb 22.
- Dicalcium phosphate dihydrate (DCPD) cements are attractive biomaterials for bone repair, and a number of different DCPD cement formulations have been proposed in the literature. In this study, we have specifically compared monocalcium phosphate monohydrate (MCPM)/hydroxyapatite (HA) and MCPM/β-tri
- PMID 23428798
Japanese Journal
- 硬組織の質的評価にMicro FT-Ramanを使用した基礎的研究
- 硬組織の質的評価にＭｉｃｒｏ ＦＴ‐Ｒａｍａｎを使用した基礎的研究
- A Study on the Thermal Properties of Dibasic Calcium Hydrogen Phosphate and Monobasic Calcium Phosphate.
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★リンクテーブル★
[★]
- 英
- monobasic calcium phosphate
[★]
- 関
- inorganic phosphate、orthophosphate、orthophosphoric acid、phospho、phosphoester、phosphoric、phosphoric acid、phosphoric acid ester、phosphorus
[★]
[★]
- 関
- single base