M-Phenylenediamine

m-Phenylenediamine
Names
	Preferred IUPAC name Benzene-1,3-diamine
	Other names 1,3-Diaminobenzene; MPD; MPDA
Identifiers
CAS Number	108-45-2 ;
3D model (JSmol)	Interactive image;
Beilstein Reference	471357
ChEBI	CHEBI:8092 ;
ChEMBL	ChEMBL1595914;
ChemSpider	13836283 ;
ECHA InfoCard	100.003.259
EC Number	203-584-7;
KEGG	C02454;
PubChem CID	7935;
RTECS number	SS7700000;
UNII	OE624J2447 ;
UN number	1673
CompTox Dashboard (EPA)	DTXSID4021137 ;
	InChI InChI=1S/C6H8N2/c7-5-2-1-3-6(8)4-5/h1-4H,7-8H2 Key: WZCQRUWWHSTZEM-UHFFFAOYSA-N ; InChI=1/C6H8N2/c7-5-2-1-3-6(8)4-5/h1-4H,7-8H2 Key: WZCQRUWWHSTZEM-UHFFFAOYAM;
	SMILES c1cc(cc(c1)N)N;
Properties
Chemical formula	C6H8N2
Molar mass	108.1 g·mol−1
Appearance	White solid
Melting point	64 to 66 °C (147 to 151 °F; 337 to 339 K)
Boiling point	282 to 284 °C (540 to 543 °F; 555 to 557 K)
Solubility in water	42.9 g/100 ml (20 °C)
Acidity (pKa)	2.50 (doubly protonated form; 20 °C, H2O); 5.11 (conjugate acid; 20 °C, H2O);
Magnetic susceptibility (χ)	−70.53·10−6 cm3/mol
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H301, H311, H317, H319, H331, H341, H410
Precautionary statements	P201, P202, P261, P264, P270, P271, P272, P273, P280, P281, P301+P310, P302+P352, P304+P340, P305+P351+P338, P308+P313, P311, P312, P321, P322, P330, P333+P313, P337+P313, P361, P363, P391, P403+P233, P405, P501
NFPA 704 (fire diamond)	3 1 0
Flash point	187 °C (369 °F; 460 K)
Autoignition; temperature	560 °C (1,040 °F; 833 K)
	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

m-Phenylenediamine, also called 1,3-diaminobenzene, is an organic compound with the formula C₆H₄(NH₂)₂. It is an isomer of o-phenylenediamine and p-phenylenediamine. This aromatic diamine is a colourless solid that appears as needles, but turns red or purple on exposure to air due to formation of oxidation products. Samples often come as colourless flakes and may darken in storage.