Xylidine

Title: Xylidine
CAS Registry Number: 1300-73-8
CAS Name: ar,ar-Dimethylbenzenamine
Additional Names: dimethylaniline; aminodimethylbenzene
Molecular Formula: C8H11N
Molecular Weight: 121.18
Percent Composition: C 79.29%, H 9.15%, N 11.56%
Line Formula: (CH3)2C6H3NH2
Literature References: There are six isomeric xylidines. Prepd by reduction of corresponding nitro-compounds: Allchin, US 1867962 (to I.C.I.); physical properties of all six isomers also given: Birch et al., J. Am. Chem. Soc. 71, 1362 (1949); van Loon et al., Rec. Trav. Chim. 79, 977 (1960); Bergmann, Berkovic, J. Org. Chem. 26, 919 (1961).
Properties: All except o-4-xylidine are liquids above 20°. d 0.97-0.99, and bp 213-226°. They are sparingly sol in water, sol in alcohol and form more or less sol salts with the strong mineral acids.
Boiling point: bp 213-226°
Density: d 0.97-0.99
CAUTION: Potential symptoms of overexposure are anoxia, cyanosis, methemoglobinemia; lung, liver and kidney damage. See NIOSH Pocket Guide to Chemical Hazards (DHHS/NIOSH 97-140, 1997) p 336.
Use: Chiefly in the manuf of dyes.
Xylometazoline Xylose Xylulose Xylyl Bromide Xylyl Chloride

Xylidine can refer to any of the six isomers of xylene amine, or any mixture of them. All isomers are toxic.

The chemical formula of xylidines is C8H11N, or (CH3)2C6H3NH2. They are stable and combustible and react with strong oxidizing agents. They may be light sensitive. The CAS number for the isomer mixture is 1300-73-8. They are typically yellow liquids (except 3,4-xylidine which is solid) that darken when exposed to air and light. They are miscible with ethanol and diethyl ether and slightly soluble in water.

Xylidines are produced as byproducts of fractional distillation of coal tar.

Their risk and safety phrases are R20 R22 R36 R37 R38.

Xylidines are chiefly used in production of pigments and dyestuffs, and also various antioxidants, agrochemicals, pharmaceuticals, and many other organic chemicals.

Xylidines are also used as a component of the Tonka rocket fuel.