Title: Dimethyl-p-phenylenediamine
CAS Registry Number: 99-98-9
CAS Name: N,N-Dimethyl-1,4-benzenediamine
Additional Names: p-aminodimethylaniline
Molecular Formula: C8H12N2
Molecular Weight: 136.19
Percent Composition: C 70.55%, H 8.88%, N 20.57%
Literature References: Prepn from p-nitrosodimethylaniline which is obtained from dimethylaniline: Gattermann-Wieland, Praxis des Organischen Chemikers (de Gruyter, Berlin, 40th ed., 1961) p 273. By reduction of methyl orange: A. I. Vogel, Practical Organic Chemistry (Longmans, London, 3rd ed., 1959) p 624.
Properties: Reddish-violet crystals. mp 53°, also stated as 41°. bp 262°. Sol in water, alcohol, chloroform, ether. Keep tightly closed and protected from light.
Melting point: mp 53°, also stated as 41°
Boiling point: bp 262°
Derivative Type: Dihydrochloride
Molecular Formula: C8H12N2.2HCl
Molecular Weight: 209.12
Percent Composition: C 45.95%, H 6.75%, N 13.40%, Cl 33.91%
Properties: White to grayish-white, hygroscopic crystalline powder. Freely sol in water; sol in alcohol.
Use: Dihydrochloride in microscopy and in tests for acetone, uric acid, thallic salts, oxydases, lignin, ozone, H2O2, H2S, Br.
Dimethylthiambutene Dimethylzinc Dimetilan Dimetofrine Dimetridazole

CAS number 99-98-9 YesY
PubChem 7472
ChemSpider 13884246 YesY
Jmol-3D images Image 1
Molecular formula C8H12N2
Molar mass 136.19 g mol−1
Appearance Reddish-violet crystals[1]
Melting point 53 °C; 127 °F; 326 K ([1])
Boiling point 262 °C; 504 °F; 535 K ([1])
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Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Dimethyl-4-phenylenediamine is a molecule used in the oxidase test.