Phenanthridine

Phenanthridine
Names
	Preferred IUPAC name Phenanthridine
	Other names Benzo[c]quinoline 6-Phenanthridine 3,4-Benzoquinoline 9-Azaphenanthrene 3,4-Benzoisioquinoline 5-Azaphenanthrene CCRIS 1234
Identifiers
CAS Number	229-87-8 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:36421 ;
ChemSpider	8834 ;
ECHA InfoCard	100.005.396
EC Number	205-934-4;
PubChem CID	9189;
UNII	62QGS7CPS6 ;
CompTox Dashboard (EPA)	DTXSID3074288 ;
	InChI InChI=1S/C13H9N/c1-2-6-11-10(5-1)9-14-13-8-4-3-7-12(11)13/h1-9H Key: RDOWQLZANAYVLL-UHFFFAOYSA-N ; InChI=1/C13H9N/c1-2-6-11-10(5-1)9-14-13-8-4-3-7-12(11)13/h1-9H Key: RDOWQLZANAYVLL-UHFFFAOYAL;
	SMILES C1=CC=C2C(=C1)C=NC3=CC=CC=C23;
Properties
Chemical formula	C13H9N
Molar mass	179.222 g·mol−1
Appearance	colorless solid
Density	1.341 g/cm3
Melting point	104–107 °C
Boiling point	349 °C at 1.025 hPa
Solubility in water	almost insoluble (7.7 μg/mL at pH 7.4)
Vapor pressure	0.0000208 mmHg
Acidity (pKa)	4.61
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H315, H318, H335
Precautionary statements	P261, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P304+P340, P305+P354+P338, P317, P319, P321, P330, P332+P317, P362+P364, P403+P233, P405, P501
Flash point	100 °C (closed cup)
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	oral, rat: 100 mg/kg (acute toxic)
	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

Phenanthridine is a nitrogen heterocyclic compound with the formula C₁₃H₉N. It is a colorless solid, although impure samples can be brownish. It is a precursor to DNA-binding fluorescent dyes through intercalation. Examples of such dyes are ethidium bromide and propidium iodide. Phenanthridine was discovered by Amé Pictet and H. J. Ankersmit in 1891.