Lithium iodate

Lithium iodate

Names
IUPAC name Lithium iodate
Identifiers
CAS Number	13765-03-2 Y
3D model (Jmol)	Interactive image
ChemSpider	141432 Y
ECHA InfoCard	100.033.954
EC Number	237-365-2
PubChem CID	3084149
UN number	1479
InChI InChI=1S/HIO3.Li/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 Y Key: FZAXZVHFYFGNBX-UHFFFAOYSA-M Y
SMILES [Li+].[O-]I(=O)=O
Properties
Chemical formula	ILiO3
Molar mass	181.84 g·mol−1
Appearance	White hygroscopic crystals
Odor	Odorless
Density	4.487 g/cm3
Melting point	420–450 °C (788–842 °F; 693–723 K)
Solubility in water	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) Hemihydrate: 80.2 g/100 mL (18 °C)
Solubility	Insoluble in EtOH
Magnetic susceptibility (χ)	−47.0·10−6 cm3/mol
Thermal conductivity	1.27 W/m·K (a-axis) 0.65 W/m·K (c-axis)
Refractive index (nD)	1.8875 (20 °C) 1.6 (RT) nHe–Ne: 1.8815 (20 °C) 1.5928 (RT)
Structure
Crystal structure	Hexagonal,hP10
Space group	P6322, No. 182
Point group	622
Lattice constant	a = 5.46(9) Å, c = 5.15(5) Å α = 90°, β = 90°, γ = 120°
Hazards
GHS pictograms
GHS signal word	Danger
GHS hazard statements	H272, H315, H319, H335, H360
GHS precautionary statements	P201, P220, P261, P305+351+338, P308+313
EU classification (DSD)	O T
R-phrases	R8, R36/37/38, R61
S-phrases	S17, S22, S36/37/39, S45, S53
NFPA 704	0 2 2
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Lithium iodate (LiIO₃) is a negative uniaxial crystal for nonlinear, acousto-optical and piezoelectric applications. It has been utilized for 347 nm ruby lasers.

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). Its transition to β-form begin at 50 °C (122 °F) and it is irreversible.