2.4- Dinitro-6-methylphenol

The majority of 2-methylphenol is used in the production of novolak phenoHc resins. High purity novolaks based on 2-methylphenol are used in photoresist appHcations (37). Novolaks based on 2-methylphenol are also epoxidized with epichlorohydrin, yielding epoxy resins after dehydrohalogenation, which are used as encapsulating resins in the electronics industry. Other uses of 2-methylphenol include its conversion to a dinitro compound, 4,6-dinitro-2-methylphenol [534-52-1] (DNOC), which is used as a herbicide (38). DNOC is also used to a limited extent as a polymerization inhibitor in the production of styrene, but this use is expected to decline because of concerns about the toxicity of the dinitro derivative. 

Dinitro-2-methylphenol, see 4.6-Dinitro-o-cresol a-Dinitrophenol, see 2,4-Dinitrophenol Dinitrosol, see 4,6-Dinitro-o-cresol Dinitrotoluol, see 2,4-Dinitrotoluene... 

Dinitrophenol (2,4-DNP) is an uncoupler of electron transport [22,58,59] and its structural analogues, 4,6-dinitro-2-methylphenol, 2-sec-butyl-4,6-dinitrophenol and Dinoseb are important pesticides [60]. Dinoseb, which is also the major degradation product of the herbicide, Acrex by soil microorganisms [61], is responsible for health and environmental hazards [62]. 

Online SPE using OSP-2 followed by LC/APCl-MS of 50 mL of river water sample (A) spiked at the S-pg/L level under full-scan mode (B) spiked at 0.06 p-g/L under SIM conditions, using negative-ion mode of operation of (1) catechol, (2) 4-nitrophenol, (3) 2,4-dinitrophenol, (4) 2-nitrophenol, (5) 4-chlorophenol, (6) 2-chlorophenol, (7) 2,6-dinitro-4-methylphenol, (8) 4,6-dinitro-2-methylphenol, (9) 2,4-dichlorophenol, (10) 2,3,4-trichlorophenol, (11) 2,4,6-trichlorophenol, (12) 2,4,5-trichlorophenol, (13) 2,3,5-trichlorophenol, (14) pentachlorophenol. For other details see Ref. [78]. (Reprinted from Puig, D., Silgoner, 1., Grasserbauer, M., and Barcelo, D., Anal. Chem., 69, 2756, 1997. With permission.)... 

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