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Dinitrotoluenes are highly toxic with a threshold limit value (TLV) of 1.5 mg/m 3. [7] It converts hemoglobin into methemoglobin. 2,4-Dinitrotoluene is also a listed hazardous waste under 40 CFR 261.24. Its United States Environmental Protection Agency (EPA) Hazardous Waste Number is D030. The maximum concentration that may be contained to not ...
The three possible arrangements of the nitro groups afford three isomers, 1,2-dinitrobenzene, 1,3-dinitrobenzene, and 1,4-dinitrobenzene. Each isomer has the chemical formula C 6 H 4 N 2 O 4 and a molar mass of about 168.11 g/mol. 1,3-Dinitrobenzene is the most common isomer and it is used in the manufacture of explosives .
They have the formula C 6 H 6–n (NO 2) n, where n = 1–6 is the number of nitro groups. Depending on the number of nitro groups, there may be several constitutional isomers possible. Mononitrobenzene; Dinitrobenzene. 1,2-Dinitrobenzene; 1,3-Dinitrobenzene; 1,4-Dinitrobenzene; Trinitrobenzene. 1,2,3-Trinitrobenzene; 1,2,4-Trinitrobenzene; 1,3 ...
In contrast, 2-methyl-1,4-dinitrobenzene (2c) is isolated in only 9.9% yield. [4] As witnessed in the above example, when a π-acceptor substituent (πAS) is meta to a π-donor substituent (πDS), the electrophilic aromatic nitration occurs ortho to the πAS rather than para.
Toluene-2,4-diisocyanate: 17.8 mg/m 3: 2.5 ppm: 584849, carcinogenic substance 95-53-4: 0341: o-Toluidine: 219 mg/m 3: 50 ppm: 95534, carcinogenic substance 126-73-8: 0584: Tributyl phosphate: 327 mg/m 3: 30 ppm: 126738: 79-00-5: 0080: 1,1,2-Trichloroethane: 546 mg/m 3: 100 ppm: 79005, carcinogenic substance 79-01-6: 0081: Trichloroethylene ...
Eli Lilly’s weight loss drug Zepbound is no longer in short supply, the FDA said, worrying patients who use cheaper, off-brand versions of the drug. On Thursday, Dec. 19, the U.S. Food and Drug ...
The U.S. Food and Drug Administration is moving to ban the use of Red No. 3 dye in food products. The agency said Wednesday it is amending its color additive regulations to no longer allow the use ...
The specific heat of solid 2,4-dinitroanisole is given by C p (Jmol −1 K −1) = 0.3153 + 0.00265T (T in K). At 298.15 K. it is 219.02 Jmol −1 K −1 The melting enthalpy is 20.2 kJmol −1 and solidification heat is 19.7 kJmol −1. These can differ so much as the liquid can be supercooled 22.8 °C. The initial decomposition temperature is ...