Benzotriazole

Benzotriazole
Names
	Preferred IUPAC name 1H-1,2,3-Benzotriazole
	Other names 1H-Benzotriazole; 1,2,3-Benzotriazole; BTA; BtaH
Identifiers
CAS Number	95-14-7 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:75331 ;
ChEMBL	ChEMBL84963 ;
ChemSpider	6950 ;
ECHA InfoCard	100.002.177
EC Number	202-394-1;
PubChem CID	7220;
RTECS number	DM1225000;
UNII	86110UXM5Y;
CompTox Dashboard (EPA)	DTXSID6020147 ;
	InChI InChI=1S/C6H5N3/c1-2-4-6-5(3-1)7-9-8-6/h1-4H,(H,7,8,9) Key: QRUDEWIWKLJBPS-UHFFFAOYSA-N ; InChI=1/C6H5N3/c1-2-4-6-5(3-1)7-9-8-6/h1-4H,(H,7,8,9) Key: QRUDEWIWKLJBPS-UHFFFAOYAH;
	SMILES n1c2ccccc2[nH]n1;
Properties
Chemical formula	C6H5N3
Molar mass	119.127 g·mol−1
Appearance	White solid
Density	1.369 g/cm3
Melting point	100 °C (212 °F; 373 K)
Boiling point	350 °C (662 °F; 623 K)
Solubility in water	20 g/L
Acidity (pKa)	8.2
Basicity (pKb)	> 14
Hazards
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H302, H319, H332, H411, H412
Precautionary statements	P261, P264, P270, P271, P273, P280, P301+P312, P304+P312, P304+P340, P305+P351+P338, P312, P330, P337+P313, P391, P501
Related compounds
Related compounds	Benzimidazole, Tolyltriazole
	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

Benzotriazole (BTA) is a heterocyclic compound with the chemical formula C₆H₄N₃H. It can be viewed as the fusion of a benzene and triazole rings. It is a white solid, although impure samples can appear tan. It is used as a corrosion inhibitor for copper.