The Collaborative Dictionary

Xylidine \Xy"li*dine\, n. (Chem.) Any one of six metameric hydrocarbons, (CH3)2.C6H3.NH2, resembling aniline, and related to xylene. They are liquids, or easily fusible crystalline substances, of which three are derived from metaxylene, two from orthoxylene, and one from paraxylene. They are called the amido xylenes. [1913 Webster] Note: The xylidine of commerce, used in making certain dyes, consists chiefly of the derivatives of paraxylene and metaxylene. [1913 Webster]

English

Noun

1. Any of six isomeric aromatic amines (CH3)2C6H3NH2 derived from the xylenes

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 . 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 little soluble in water.

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

Their risk and safety phrases are .

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.

2,3-xylidine

2,3-xylidine, also called o-xylidine, 2,3-dimethylaniline, 2,3-xylylamine, or 2,3-dimethylphenylamine, is a liquid with melting point 2.5 °C and boiling point 222 °C, and flash point at 96 °C. It is used in production of mefenamic acid, dyes, and pesticides.

2,4-xylidine

2,4-xylidine, also called 2-methyl-p-toluidine, 2,4-dimethylaniline, 2,4-xylylamine, or 2,4-dimethylphenylamine, is a liquid with melting point 16 °C, boiling point 214 °C, and flash point at 90 °C. It is used for production of pesticides, dyes, and other chemicals.

2,5-xylidine

2,5-xylidine, also called p-xylidine, 2,5-dimethylaniline, 2,5-xylylamine, or 2,5-dimethylphenylamine, is a liquid with melting point 11.5 °C and boiling point 218 °C. It is used for production of dyes and other chemicals.

2,6-xylidine

2,6-xylidine, also called 2,6-dimethylaniline, 2,6-xylylamine, or 2,6-dimethylphenylamine, is a liquid with melting point 8.4 °C and boiling point 214 °C. It is used in production of some anesthetics and other chemicals.

3,4-xylidine

3,4-xylidine, also called 3,4-dimethylaniline, 3,4-xylylamine, or 3,4-dimethylphenylamine, is a crystalline solid with melting point 51 °C and boiling point 226 °C. It is used as a raw material for production of vitamin B2, dyes, pesticides, and other chemicals.

3,5-xylidine

3,5-xylidine, also called 3,5-dimethylaniline, 3,5-xylylamine, or 3,5-dimethylphenylamine, is a liquid with melting point 9.8 °C and boiling point 220-221 °C. It is used for production of pesticides, dyes, and other chemicals.