1,2,3-Triazole

1,2,3-Triazole
Names
	Preferred IUPAC name 1H-1,2,3-Triazole
	Other names 1,2,3-Triazole
Identifiers
CAS Number	288-36-8 ;
3D model (JSmol)	Interactive image; Interactive image;
ChEBI	CHEBI:35566 ;
ChemSpider	60839 ;
ECHA InfoCard	100.128.405
EC Number	608-262-3;
PubChem CID	67516;
UNII	EM7554254W ;
CompTox Dashboard (EPA)	DTXSID30870495 ;
	InChI InChI=1S/C2H3N3/c1-2-4-5-3-1/h1-2H,(H,3,4,5) Key: QWENRTYMTSOGBR-UHFFFAOYSA-N ; InChI=1/C2H3N3/c1-2-4-5-3-1/h1-2H,(H,3,4,5) Key: QWENRTYMTSOGBR-UHFFFAOYAF;
	SMILES C1=CN=NN1; c1cnn[nH]1;
Properties
Chemical formula	C2H3N3
Molar mass	69.0654
Appearance	colorless liquid
Density	1.192
Melting point	23 to 25 °C (73 to 77 °F; 296 to 298 K)
Boiling point	203 °C (397 °F; 476 K)
Solubility in water	very soluble
Acidity (pKa)	9.4
Basicity (pKb)	1.2
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Related compounds
Related compounds	1,2,4-triazole imidazole
	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

1,2,3-Triazole is one of a pair of isomeric chemical compounds with molecular formula C₂H₃N₃, called triazoles, which have a five-membered ring of two carbon atoms and three nitrogen atoms. 1,2,3-Triazole is a basic aromatic heterocycle.