Lithium fluoride

Lithium fluoride
	; __ Li+ __ F−
	; __ Li+ __ F−
Names
	IUPAC name Lithium fluoride
Identifiers
CAS Number	7789-24-4 ;
3D model (JSmol)	Interactive image;
ChemSpider	23007 ;
ECHA InfoCard	100.029.229
EC Number	232-152-0;
PubChem CID	224478;
RTECS number	OJ6125000;
UNII	1485XST65B ;
CompTox Dashboard (EPA)	DTXSID10894119 ;
	InChI InChI=1S/FH.Li/h1H;/q;+1/p-1 Key: PQXKHYXIUOZZFA-UHFFFAOYSA-M ; InChI=1/FH.Li/h1H;/q;+1/p-1 Key: PQXKHYXIUOZZFA-REWHXWOFAG;
	SMILES [Li+].[F-];
Properties
Chemical formula	LiF
Molar mass	25.939(2) g/mol
Appearance	White powder or colorless hygroscopic crystals
Density	2.635 g/cm3
Melting point	845 °C (1,553 °F; 1,118 K)
Boiling point	1,676 °C (3,049 °F; 1,949 K)
Solubility in water	0.127 g/(100 mL) (18 °C); 0.134 g/(100 mL) (25 °C)
Solubility product (Ksp)	1.84×10−3
Solubility	soluble in HF ; insoluble in alcohol
Magnetic susceptibility (χ)	−10.1·10−6 cm3/mol
Refractive index (nD)	1.3915
Structure
Crystal structure	Face-centered cubic
Lattice constant	a = 403.51 pm
Molecular shape	Linear
Thermochemistry
Heat capacity (C)	1.507 J/(g·K)
Std molar; entropy (S⦵298)	35.73 J/(mol·K)
Std enthalpy of; formation (ΔfH⦵298)	-616 kJ/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H315, H319, H335
NFPA 704 (fire diamond)	3 0 0
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	143 mg/kg (oral, rat)
Related compounds
Other anions	Lithium chloride; Lithium bromide; Lithium iodide; Lithium astatide
Other cations	Sodium fluoride; Potassium fluoride; Rubidium fluoride; Caesium fluoride; Francium fluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Lithium fluoride is an inorganic compound with the chemical formula LiF. It is a colorless solid that transitions to white with decreasing crystal size. Its structure is analogous to that of sodium chloride, but it is much less soluble in water. It is mainly used as a component of molten salts.^[4] Partly because Li and F are both light elements, and partly because F₂ is highly reactive, formation of LiF from the elements releases one of the highest energies per mass of reactants, second only to that of BeO.

^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.
^ "Lithium fluoride - Product Specification Sheet". Sigma-Aldrich. Merck KGaA. Retrieved 1 Sep 2019.
^ "Lithium fluoride". Toxnet. NLM. Archived from the original on 12 August 2014. Retrieved 10 Aug 2014.
^ Aigueperse J, Mollard P, Devilliers D, et al. (2005). "Fluorine Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a11_307. ISBN 9783527303854.

[crc-1] John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.

[2] "Lithium fluoride - Product Specification Sheet". Sigma-Aldrich. Merck KGaA. Retrieved 1 Sep 2019.

[3] "Lithium fluoride". Toxnet. NLM. Archived from the original on 12 August 2014. Retrieved 10 Aug 2014.

[Aigs-4] Aigueperse J, Mollard P, Devilliers D, et al. (2005). "Fluorine Compounds, Inorganic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a11_307. ISBN 9783527303854.

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Names

__ Li⁺ __ F⁻
__ Li⁺ __ F⁻
IUPAC name Lithium fluoride
Identifiers
CAS Number	7789-24-4^Y
3D model (JSmol)	Interactive image
ChemSpider	23007^Y
ECHA InfoCard	100.029.229
EC Number	232-152-0
PubChem CID	224478
RTECS number	OJ6125000
UNII	1485XST65B^Y
CompTox Dashboard (EPA)	DTXSID10894119
InChI InChI=1S/FH.Li/h1H;/q;+1/p-1^Y Key: PQXKHYXIUOZZFA-UHFFFAOYSA-M^Y InChI=1/FH.Li/h1H;/q;+1/p-1 Key: PQXKHYXIUOZZFA-REWHXWOFAG
SMILES [Li+].[F-]
Properties
Chemical formula	LiF
Molar mass	25.939(2) g/mol
Appearance	White powder or colorless hygroscopic crystals
Density	2.635 g/cm³
Melting point	845 °C (1,553 °F; 1,118 K)
Boiling point	1,676 °C (3,049 °F; 1,949 K)
Solubility in water	0.127 g/(100 mL) (18 °C) 0.134 g/(100 mL) (25 °C)
Solubility product (K_sp)	1.84×10⁻³^[1]
Solubility	soluble in HF insoluble in alcohol
Magnetic susceptibility (χ)	−10.1·10⁻⁶ cm³/mol
Refractive index (n_D)	1.3915
Structure
Crystal structure	Face-centered cubic
Lattice constant	a = 403.51 pm
Molecular shape	Linear
Thermochemistry
Heat capacity (C)	1.507 J/(g·K)
Std molar entropy (S^⦵₂₉₈)	35.73 J/(mol·K)
Std enthalpy of formation (Δ_fH^⦵₂₉₈)	-616 kJ/mol
Hazards
GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H315, H319, H335^[2]
NFPA 704 (fire diamond)	3 0 0
Lethal dose or concentration (LD, LC):
LD₅₀ (median dose)	143 mg/kg (oral, rat)^[3]
Related compounds
Other anions	Lithium chloride Lithium bromide Lithium iodide Lithium astatide
Other cations	Sodium fluoride Potassium fluoride Rubidium fluoride Caesium fluoride Francium fluoride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references