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 Methyl red (2-(N, N-dimethyl-4-aminophenyl) azobenzenecarboxylic corrosive), likewise called C.I. Corrosive Red 2, is a marker color that turns red in acidic arrangements. It is an azo color and is a dull red crystalline powder. Methyl red is a pH marker; it is red in pH under 4.4, yellow in pH more than 6.2, and orange in the middle of, with a pKa of 5.1. Murexide and methyl red are researched as promising enhancers of the sonochemical decimation of chlorinated hydrocarbon poisons.

Methyl iodide is utilized as a halfway in the make of a few pharmaceuticals and pesticides, in methylation forms, and in the field of microscopy. In people, intense (here and now) introduction to methyl iodide by inward breath may discourage the focal sensory system (CNS), chafe the lungs and skin, and influence the kidneys. Gigantic intense inward breath introduction to methyl iodide has prompted aspiratory edema.

Mercury chloride (HgCl2). An exceptionally dangerous aggravate that volatizes marginally at standard temperature and apparently at 100 degrees C. Mercuric chloride is destructive to mucous films and utilized as a topical germ-free and disinfectant.