Lithium iodate
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Skeletal formula of lithium iodate with I—O bond length | |
Crystal structure of lithium iodate, iodines are inside the unit cell | |
Names | |
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IUPAC name
Lithium iodate
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Identifiers | |
13765-03-2 | |
ChemSpider | 141432 |
EC Number | 237-365-2 |
Jmol 3D model | Interactive image |
PubChem | 3084149 |
UN number | 1479 |
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Properties | |
ILiO3 | |
Molar mass | 181.84 g·mol−1 |
Appearance | White hygroscopic crystals |
Odor | Odorless |
Density | 4.487 g/cm3[1] |
Melting point | 420–450 °C (788–842 °F; 693–723 K)[1][3][5] |
Anhydrous: 89.4 g/100 mL (10 °C) 82.7 g/100 mL (25 °C) 78.4 g/100 mL (40.1 °C) 73 g/100 mL (75.6 °C)[1] Hemihydrate: 80.2 g/100 mL (18 °C)[2] |
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Solubility | Insoluble in EtOH[3] |
Thermal conductivity | 1.27 W/m·K (a-axis) 0.65 W/m·K (c-axis)[1] |
Refractive index (nD)
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1.8875 (20 °C) 1.6 (RT) nHe–Ne: 1.8815 (20 °C)[1] 1.5928 (RT)[4] |
Structure | |
Hexagonal,[3] hP10[6] | |
P6322, No. 182[6] | |
622[6] | |
a = 5.46(9) Å, c = 5.15(5) Å[6]
α = 90°, β = 90°, γ = 120°
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Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |
Infobox references | |
Lithium iodate (LiIO3) is a negative uniaxial crystal[1] for nonlinear, acousto-optical and piezoelectric applications. It has been utilized for 347 nm ruby lasers.[7][8]
Properties
Mohs hardness of lithium iodate is 3.5–4. Its linear thermal expansion coefficient at 298 K (25 °C; 77 °F) is 2.8·10−5/°C (a-axis) and 4.8·10−5/°C (c-axis).[1] Its transition to β-form begin at 50 °C (122 °F) and it is irreversible.[5]
References
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