Lithium iodate

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Lithium iodate
Skeletal formula of lithium iodate with I—O bond length
Crystal structure of lithium iodate, iodines are inside the unit cell
IUPAC name
Lithium iodate
  • 13765-03-2 checkY
3D model (JSmol)
ECHA InfoCard 100.033.954 Edit this at Wikidata
EC Number
  • 237-365-2
UN number 1479
  • InChI=1S/HIO3.Li/c2-1(3)4;/h(H,2,3,4);/q;+1/p-1 checkY
  • [Li+].[O-]I(=O)=O
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]
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]
80.2 g/100 mL (18 °C)[2]
Solubility Insoluble in EtOH[3]
−47.0·10−6 cm3/mol
Thermal conductivity 1.27 W/m·K (a-axis)
0.65 W/m·K (c-axis)[1]
1.8875 (20 °C)
1.6 (RT)
1.8815 (20 °C)[1]
1.5928 (RT)[4]
Hexagonal,[3] hP10[6]
P6322, No. 182[6]
a = 5.46(9) Å, c = 5.15(5) Å[6]
α = 90°, β = 90°, γ = 120°
GHS pictograms GHS03: OxidizingGHS07: HarmfulGHS08: Health hazard[7]
GHS Signal word Danger
H272, H315, H319, H335, H360[7]
P201, P220, P261, P305+351+338, P308+313[7]
NFPA 704 (fire diamond)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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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.[9][10]


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]


  1. ^ a b c d e f g "Rarely Used and Archive Crystals". Nonlinear Optical Crystals: A Complete Survey. 2005. pp. 364–368. doi:10.1007/0-387-27151-1_8. ISBN 978-0-387-27151-4 Archived from the original on 2014-08-08. Retrieved 2014-08-08. Missing or empty |title= (help)
  2. ^ Seidell, Atherton; Linke, William F. (1919). Solubilities of Inorganic and Organic Compounds (2nd ed.). New York City: D. Van Nostrand Company. p. 374.
  3. ^ a b c Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
  4. ^ Polyanskiy, Mikhail. "Refractive index of LiIO3 (Lithium iodate) - Herbst-o". Retrieved 2014-08-08. External link in |website= (help)
  5. ^ a b Teyssier, Jeremie; Dantec, Ronan Le; Galez, Christine; Mugnier, Yannick; Bouillot, Jacques; Plenet, Jean-Claude (2003-11-20). Andrews, David L; Gaburro, Zeno; Cartwright, Alexander N; Lee, Charles Y. C (eds.). "LiIO3 nanocrystals in SiO2 xerogels, a new material for non-linear optics". Proceedings of SPIE. Nanocrystals, and Organic and Hybrid Nanomaterials. 5222 (26): 26. CiteSeerX doi:10.1117/12.507309. S2CID 136547473.
  6. ^ a b c d Zachariasen, W.H.; Olof, F.A. BartaLars (1931-06-15). "Crystal Structure of Lithium Iodate". Physical Review Letters. 37 (12): 1626–1630. doi:10.1103/PhysRev.37.1626.
  7. ^ a b c Sigma-Aldrich Co., Lithium iodate. Retrieved on 2014-08-08.
  8. ^ "SDS of Lithium iodate anhydrous" (PDF). Connecticut, USA: Pfaltz & Bauer, Inc. Archived from the original (PDF) on 2014-08-10. Retrieved 2014-08-08. External link in |website= (help)
  9. ^ Risk, W. P.; Gosnell, T. R.; Nurmikko, A. V. (9 January 2003). Compact Blue-Green Lasers. Cambridge University Press. p. 123. ISBN 978-0-521-52103-1. Retrieved 13 December 2012.
  10. ^ Nikogosyan, David N. (4 January 2005). Nonlinear Optical Crystals: A Complete Survey. Springer. p. 371. ISBN 978-0-387-22022-2. Retrieved 13 December 2012.