Kalsium fluorida
Kalsium fluorida ialah sejenis kimia tidak organik yang ada atom kalsium dan fluorin dengan formula kimia CaF2. Ia ialah sejenis pepejal yang putih. Ia dapat diketahui di dalam fluorit.
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Imej model 3D Jmol
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ChemSpider | |||
ECHA InfoCard | 100.029.262 | ||
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Sifat | |||
CaF2 | |||
Jisim molar | 78.07 g·mol−1 | ||
Rupa bentuk | White crystalline solid (single crystals are transparent) | ||
Ketumpatan | 3.18 g/cm3 | ||
Takat lebur | 1,418 °C (2,584 °F; 1,691 K) | ||
Takat didih | 2,533 °C (4,591 °F; 2,806 K) | ||
0.015 g/L (18 °C) 0.016 g/L (20 °C) | |||
Hasil keterlarutan (Ksp)
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3.9 × 10−11 [1] | ||
Keterlarutan | insoluble in acetone slightly soluble in acid | ||
-28.0·10−6 cm3/mol | |||
Indeks biasan (nD)
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1.4338 | ||
Struktur | |||
Struktur kristal | cubic crystal system, cF12[2] | ||
Kumpulan ruang | Fm3m, #225 | ||
Geometri koordinasi |
Ca, 8, cubic F, 4, tetrahedral | ||
Bahaya | |||
Bahaya-bahaya utama | Reacts with concentrated sulfuric acid to produce hydrofluoric acid | ||
MSDS | ICSC 1323 | ||
NFPA 704 (berlian api) | |||
Takat kilat | Non-flammable | ||
Dos maut (LD) atau kepekatan dos maut (LC) | |||
LDLo (paling rendah diketahui)
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>5000 mg/kg (oral, guinea pig) 4250 mg/kg (oral, rat)[3] | ||
Sebatian berkaitan | |||
Anion lain
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kalsium klorida kalsium bromida kalsium iodida | ||
Kation lain
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berylium fluorida Magnesium fluorida Strontium fluorida Barium fluorida | ||
Kecuali jika dinyatakan sebaliknya, data diberikan untuk bahan-bahan dalam keadaan piawainya (pada 25 °C [77 °F], 100 kPa). | |||
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Rujukan kotak info | |||
References
sunting- ^ Pradyot Patnaik. Handbook of Inorganic Chemicals. McGraw-Hill, 2002, ISBN 0-07-049439-8
- ^ X-ray Diffraction Investigations of CaF2 at High Pressure, L. Gerward, J. S. Olsen, S. Steenstrup, M. Malinowski, S. Åsbrink and A. Waskowska, Journal of Applied Crystallography (1992), 25, 578-581 doi:10.1107/S0021889892004096
- ^ "Fluorides (as F)". Immediately Dangerous to Life or Health Concentrations (IDLH). Institut Kebangsaan untuk Keselamatan dan Kesihatan Pekerjaan (NIOSH).