Lithium nitrite

Lithium nitrite
Names
	Preferred IUPAC name Lithium nitrite
Identifiers
CAS Number	13568-33-7 ;
3D model (JSmol)	Interactive image;
ChemSpider	145980;
ECHA InfoCard	100.033.600
EC Number	23-976-1;
PubChem CID	166849;
CompTox Dashboard (EPA)	DTXSID90884518 ;
	InChI InChI=1S/Li.HNO2/c;2-1-3/h;(H,2,3)/q+1;/p-1 Key: IDNHOWMYUQKKTI-UHFFFAOYSA-M; InChI=1/Li.HNO2/c;2-1-3/h;(H,2,3)/q+1;/p-1 Key: IDNHOWMYUQKKTI-REWHXWOFAV;
	SMILES [Li+].N(=O)[O-];
Properties
Chemical formula	LiNO2
Molar mass	52.9465 g/mol
Appearance	white, hygroscopic crystals
Melting point	222 °C (432 °F; 495 K)
Solubility in water	49 wt.% (20 °C)
Thermochemistry
Std molar; entropy (S⦵298)	96.0 J/mol K
Std enthalpy of; formation (ΔfH⦵298)	−372.4 kJ/mol
Gibbs free energy (ΔfG⦵)	-302.0 kJ/mol
Enthalpy of fusion (ΔfH⦵fus)	9.2 kJ/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Lithium nitrite is the lithium salt of nitrous acid, with formula LiNO₂. This compound is hygroscopic and very soluble in water. It is used as a corrosion inhibitor in mortar. It is also used in the production of explosives, due to its ability to nitrosate ketones under certain conditions.

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