Chlor xylenes

The Other two xylenes yield not one only but more than one isomeric mono-chlor xylene. One of the xylenes yields two isomeric products while the other one yields three. 

The position 6 is plainly in the same relation to i and 2 that 3 is, and 5 the same as 4 so that no other mono-chlor xylene is possible if the methyl groups are originally in positions i and 2. The xylene which boils at 142° and melts at —28° is the one which yields two and only two mono-chlor substitution products, and it isj therefore ortho-xylene. 

Trinitro-1-Naphthol (2,4,5-Trinitro-1-hydroxy naphthalene). Yellow leaflets or prisms mp 189—90° bp, explds. Sol in hot AcOH, si sol in hot w, ale, benz, eth acetate, xylene cold AcOH. Prepn from 2,4-dinitro-naphthol by nitration, or from 4-chlor-1,3,8-trinitronaphthalene by heating with 0.1 N NaOH in w or ale... 

The chemical industry is a very large consumer of energy and much is needed to be done to reduce consumption (see Section 3.6 for additional energy reduction statistics). The largest consumers of energy in the chemical industry are represented by six chemical chains, namely agricultural fertilizers, ethylene, benzene/toluene/ xylene, chlor-alkali, propylene, and butadiene. Together, they consume 1646 trillion... 

Other nitro-derivatives of hydrocarhons and of phenols are used in explosive mixtures. Among the former are dinitro-benzene, chlor-dinitro-benzene, dinitro-toluene, di- or tri-nitro-den-vatives of mesitylene, pseudocumene, and xylene, dinitro-naphthalene. Trinitro-naphthalene and tetra-nitro-naphthalene have also been proposed. Of the nitro-phenols, perhaps the most important is tri-nitro-cresol, known as Cresilite in France, where it is added to Melinite. Other nitro-derivatives of the aromatic series will be mentioned in the section on detonators. 

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