DNOC

DNOC See 4,6-dinitro-o-cresol. dodecahedral co-ordination Co-ordination by... 

The introduction of DNOC was followed by the appearance in the 1940s of the substituted phenoxy acids, and in 1951 of the substituted ureas. 

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. 

Decision on the Convention on the Transboundary Effects of Industrial Accidents Decision concerning the non-mclusion of DNOC m Annex I of Directive 91/414/EEC on plant protection products... 

Uncouples oxidative DNOC and certain other Hassall (1990), TJ 0)... 

New a.s. are active substances not on the market of EC in protection products before 25 July 1993. Noninclusion has been decided for the following as after evaluation azinphos-ethyl, chlozohnate, chlorfenapyr, cyhalothiin, dinoterb, DNOC, fentin-acetate, fentin-hydroxide, fenvalerate, ferbam, lindane, monolinuron, parathion, permethrin, propham, pyrazophos, quintozen, tecnazen, zineb. 

DNOC (4,6-dinitro-o-cresol), 13 283 14 349 DNQ-novolac photoresist film, optical absorption spectrum of, 15 163-164 DNQ-novolac resists, 15 162... 

Herbicides 2,4-D, MCPA, Mecoprop, 4-(2,4-DB), TCA, Amitrole, Dalapon, Monuron, Chlorpropham, Endothal, Pyrazon, and DNOC. 

CF 2, see 1,1,1-Trichloroethane CFC 11, see Trichlorofluoromethane CFC 21, see Dichlorofluoromethane CFC 112, see 1,2-Difluorotetrachloroethane CFC 112a, see 1,1-Difluorotetrachloroethane CFC 113, see 1,1,2-Trichlorotrifluoroethane Chelen, see Chloroethane Chemform, see Methoxychlor Chemathion, see Malathion Chemical 109, see ANTU Chemical mace, see a-Chloroacetophenone Chemox PE, see 2,4-Dinitrophenol Chempenta, see Pentachlorophenol Chemphene, see Toxaphene Chemrat, see Pindone Chemsect DNOC, see 4,6-Dinitro-ocresol Chemtol, see Pentachlorophenol Chevron acetone, see Acetone Chimec NR, see 2-Bntoxyethanol Chinone, see / Qninone Chinnfnr, see Carbofuran Chipco thiram 75, see Thiram Chipco turf herbicide "D", see 2,4-D Chladone 11, see Trichlorofluoromethane Chlon, see Pentachlorophenol Chlorallylene, see Allyl chloride Chloran, see Lindane 4-Chloraniline, see 4-Chloroaniline p-Chloraniline, see 4-Chloroaniline Chlorbenzene, see Chlorobenzene Chlorbenzol, see Chlorobenzene p-Chlor-ro-cresol, see p-Chloro-ro-cresol Chlordantoin, see Amyl acetate Chlordan, see Chlordane... 

DNOC, see 4,6-Dichloro-o-cresol DNOP, see Di-n-octyl phthalate DNP, see 2,4-Dinitrophenol... 

Toxicology. Dinitro-o-cresol (DNOC) causes an increase in metabolic rate that results in hyperpyrexia. Severe exposure may cause coma and death. Exposure also causes a yellow pigmentation of the skin, hair, sclera, and conjunctivae. 

The development of bilateral cataracts has been reported in chronic intoxication due to the repeated ingestion of dinitro-o-cresol for ill-advised therapeutic purposes cataracts have not been observed after industrial or agricultural exposure. Contact with the eyes or absorption of DNOC by any route can cause a characteristic yellow staining of the conjunctiva and sclera of the eye. DNOC stains human skin yellow on contact. Although the yellow staining of the skin and sclera may be unsightly, such cosmetic effects are not regarded as adverse. ... 

In reproductive studies, DNOC did not affect either sperm counts or testicular weights in mice given single doses in the range of... 

In one chronic feeding study in rats DNOC did not cause an increased incidence of any type of tumor. DNOC was clastogenic, increasing the frequency of chromosomal aberrations both in vivo and in vitro. Conflicting results for mutagenicity have been obtained in bacterial assays. ... 

Quinto I, De Marinis E, Mallardo M, et al Effect of DNOC, Ferbam and hnidan exposure on mouse sperm morphology. Mutat Res 224 405-408, 1989... 

Catalase activity CAT Oxidative stress parameter PCBs, BKME, PAHs, DNOC TCB > Liver tissue 0-11... 

BKME = bleach kraft pulp mill effluent DNOC = 4,6-dinitro-o-cresol l.t. = liver tissue a Van der Cost et al. (2003)... 

Dinitrophenols had been used as insecticides since 1892 but it was not until the 1930s that their value as herbicides was discovered and 4,6-dinitro-o-cresol (DNOC) was introduced. The trouble with dinitrophenols was their toxicity to all living organisms that respire. Their mode of action is through the uncoupling of oxidative phosphorylation, an effect that leads to a rapid death of any organism that comes into contact with the chemical, including the operator. 

The air-water volume ratio (Va / Vw) in a cloud is about 10s (Seinfeld, 1986). Consider now a given cloud volume that contains a certain total amount of (a) 2-4-dinitro-6-methyl phenol (DNOC), and (b) 4-chloroaniline (4-CA). Calculate the fraction of total DNOC and 4-CA, respectively, present in the water phase at equilibrium at 10°C for pH 2, 4, and 6. Neglect the effect of temperature on the acidity constant. 

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