Calcium hydrogen phosphate dihydrate

Base Information

• Chemical Name: Calcium hydrogen phosphate dihydrate
• CAS No.: 7789-77-7
• Molecular Formula: CaHPO4^.2(H2O)
• Molecular Weight: 136.057
• Hs Code.: 28352590
• European Community (EC) Number: 616-542-1,626-863-9
• UNII: O7TSZ97GEP
• DSSTox Substance ID: DTXSID90872536
• Wikipedia: Brushite
• NCI Thesaurus Code: C79566
• RXCUI: 2632248
• Mol file: 7789-77-7.mol

Synonyms:brushite;calcium monohydrogen phosphate dihydrate;calcium phosphate, dibasic;calcium phosphate, dibasic, dihydrate;calcium phosphate, dihydrate (1:1);dibasic calcium phosphate dihydrate;dicalcium phosphate;dicalcium phosphate anhydrous;dicalcium phosphate dihydrate

Chemical Property of Calcium hydrogen phosphate dihydrate

Chemical Property:

• Appearance/Colour: white crystalline solid
• Melting Point: 109°C -H?O
• Boiling Point: 158oC at 760 mmHg
• PSA: 111.69000
• Density: 2.31 g/cm³
• LogP: -0.18080
• Storage Temp.: Inert atmosphere,Room Temperature
• Solubility.: Practically insoluble in water and in ethanol (96 per cent). It dissolves in dilute hydrochloric acid and in dilute nitric acid.
• Water Solubility.: Slightly soluble in water. Soluble in dilute hydrochloric, nitric, and acetic acid. Insoluble in alcohol
• Hydrogen Bond Donor Count: 3
• Hydrogen Bond Acceptor Count: 6
• Rotatable Bond Count: 0
• Exact Mass: 171.9449657
• Heavy Atom Count: 8
• Complexity: 46.5

Purity/Quality:

>99% ^*data from raw suppliers

Calcium phosphate dibasic dihydrate puriss., meets analytical specification of Ph. Eur., BP, USP, 98-102.5% ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xi
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: O.O.OP(=O)([O-])[O-].[Ca+2]
• 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. 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.

Technology Process of Calcium hydrogen phosphate dihydrate

There total 90 articles about Calcium hydrogen phosphate dihydrate which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.85%

calcium hydrogen phosphate dihydrate → calcium hydrogen phosphate (7789-77-7)

Guidance literature:

In melt; byproducts: Ca3(PO4)2*99H2O; melting with decompn. at 36°C;;

Reference yield: 95.0%

disodium hydrogenphosphate + calcium chloride (14336-71-1) → calcium hydrogen phosphate (7789-77-7)

Guidance literature:

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;;

Reference yield: 45.0%

2C8H18O4P(1-)*4C8H19O4P*Ca(2+) → calcium hydrogen phosphate (7789-77-7)

Guidance literature:

With calcium methylate; In methanol; at 150 ℃; for 48h; Autoclave;

DOI:10.1021/acs.inorgchem.0c01591

upstream raw materials:

diammonium phosphate

calcium(II) nitrate

fluorosilicic acid

phosphoric acid

Downstream raw materials:

phosphoric acid

sodium hydroxide

calcium(II) nitrate

ammonium dihydrogen phosphate

Refernces

• 1、 Larson, H. W. E.. "". . p. 401 - 406. Retrieved 1935.
• 2、 Malysheva,Beletskii. "Biocompatibility of apatite-containing implant materials". . p. 180 - 183. Retrieved 2001.
• 3、 Krause, H.. "". . p. 99 - 106. Retrieved 1948.
• 4、 Hayek, E.,Muellner, F.,Koller, K.. "". . . Retrieved 1951.
• 5、 Louati,Hlel,Guidara,Gargouri. "Analysis of the effects of thermal treatments on CaHPO4 by 31P NMR spectroscopy". . p. 13 - 18. Retrieved 2005.
• 6、 Tas, A. Cuneyt,Bhaduri, Sarit B.. "Chemical processing of CaHPO4·2H2O: Its conversion to hydroxyapatite". . p. 2195 - 2200. Retrieved 2004.
• 7、 Da Silva Filho,Da Silva, Oberto G.,Da Fonseca, Maria G.,Arakaki, Luiza N. H.,Airoldi. "Synthesis and thermal characterization of copper and calcium mixed phosphates". . p. 775 - 778. Retrieved 2007.
• 8、 Karaoglanov, Z.. "". . p. 305 - 331. Retrieved 1938.
• 9、 Guha, Avijit,Nayar, Suprabha. "Low-temperature biomimetic synthesis of β-tricalcium phosphate by altering pH". . p. 789 - 792. Retrieved 2014.
• 10、 Bhat, Gulzar A.,Kalita, Alok Ch.,Murugavel, Ramaswamy. "Intriguing structural chemistry of neutral and anionic layered monoalkylphosphates: Single-source precursors for high-yield ceramic phosphates". . p. 5390 - 5401. Retrieved 2017/09/26.