18694-07-0

Basic information

• Product Name: Metaphosphoric acid (H6P6O18)
• Synonyms: hexametaphosphoric acid;EINECS 242-506-6;cyclohexaphosphate acid;cyclohexaphosphoxane-2,4,6,8,10,12-hexol 2,4,6,8,10,12-hexaoxide;2,4,6,8,10,12-hexahydroxy-1,3,5,7,9,11-hexaoxa-2;cyclohexaphosphoric acid;hexametaphosphate
• CAS NO: 18694-07-0
• Molecular Formula: H6O18P6
• Molecular Weight: 479.879
• Mol File: 18694-07-0.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: Metaphosphoric acid (H6P6O18)(CAS DataBase Reference)
• NIST Chemistry Reference: Metaphosphoric acid (H6P6O18)(18694-07-0)
• EPA Substance Registry System: Metaphosphoric acid (H6P6O18)(18694-07-0)

Safety Data

• Hazardous Substances Data: 18694-07-0(Hazardous Substances Data)

Relevant articles and documents

Chemical preparation, thermal behavior and crystal structure of calcium-cesium cyclohexaphosphate dihydrate

Chemical preparation and crystal structure are given for a new monovalent-divalent cation cyclohexaphosphate. This compound is monoclinic P21/c with the following unit cell parameters: a = 9.087(2), b = 12.246(4), c = 9.895(4) A, β = 116.98(2)°, Z = 2, V = 981(1) A3, and Dx = 2.897 g·cm-3. The atomic arrangement can be described as successive wide layers made by the P6O18 ring anions and interconnected by the CaO6 and CsO8 polyhedra and the hydrogen bonds. Crystal structure was solved with a final R value of 0.032 for 6263 independent reflections. The thermal behavior has been investigated and interpreted by comparison with IR absorption spectroscopy and X-ray diffraction experiments.

Synthesis and crystal structure of cesium-lithium cyclo-hexaphosphate dihydrate

Cs3Li3P6O182H2O is triclinic, P1ˉ, with Z = 1 and the following unit-cell dimensions: a = 7.938 (2), b = 7.674 (2), c = 9.556 (2), α = 113.39 (4), β = 93.83 (4), γ = 83.00 (4). The crystal structure w

Synthesis and crystal structure of (p-CH3C6H4NH3)6P6O18·8H2O

Preparation and complete structural characterization by X-ray diffraction (XRD), IR absorption, thermogravimetric and differential thermal analysis (TG-DTA), and mass angle spinning (MAS) NMR spectroscopy are given for a new cyclohexaphosphate, (p-CH3C6H4NH3)6P6O18·8H2O. This compound is monoclinic in space group P21/c, with Z = 2 and unit-cell parameters a = 10.695(6), b = 24.952(8), c = 11.163(4) angstrom, and β = 97.53(4)°. The crystal structure was solved and refined down to R = 0.036, using 4168 independent reflections. The atomic arrangement can be described as layer organization. Layers built by P6O18 ring anions and water molecules spread parallel to the plane (010). Between these layers are located the organic groups that form hydrogen bonds with P6O18 ring oxygens. Geometrical characteristics of the hydrogen bonds are described.