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Dichloromethane (DCM, methylene chloride, or methylene bichloride) is an organochlorine compound with the formula C H 2 Cl 2. This colorless, volatile liquid with a chloroform-like, sweet odor is widely used as a solvent. Although it is not miscible with water, it is slightly polar, and miscible with many organic solvents. [12]
log 10 of Dichloromethane vapor pressure. Uses formula: log e P m m H g = {\displaystyle \scriptstyle \log _{e}P_{mmHg}=} log e ( 760 101.325 ) − 10.08632 log e ( T + 273.15 ) − 6030.610 T + 273.15 + 80.87786 + 9.812512 × 10 − 6 ( T + 273.15 ) 2 {\displaystyle \scriptstyle \log _{e}({\frac {760}{101.325}})-10.08632\log _{e ...
Likewise, when a moving atom collides with a stationary atom, both atoms will have energy greater than E d after the collision only if the original moving atom had an energy exceeding 2E d. Thus, only PKAs with an energy greater than 2E d can continue to displace more atoms and increase the total number of displaced atoms. [1]
Hydrogen cyanide is a weak acid in aqueous solution with a pK a of about 9. In strongly alkaline solutions, above pH 11, say, it follows that sodium cyanide is "fully dissociated" so the hazard due to the hydrogen cyanide gas is much reduced. An acidic solution, on the other hand, is very hazardous because all the cyanide is in its acid form.
The limit of the Damköhler number going to infinity is called the Burke–Schumann limit. As a rule of thumb , when Da is less than 0.1 a conversion of less than 10% is achieved, and when Da is greater than 10 a conversion of more than 90% is expected.
The chloroform molecule can be viewed as a methane molecule with three hydrogen atoms replaced with three chlorine atoms, leaving a single hydrogen atom. The name "chloroform" is a portmanteau of terchloride (tertiary chloride, a trichloride) and formyle, an obsolete name for the methylylidene radical (CH) derived from formic acid. [citation ...
Chloroacetic acid was first prepared (in impure form) by the French chemist Félix LeBlanc (1813–1886) in 1843 by chlorinating acetic acid in the presence of sunlight, [3] and in 1857 (in pure form) by the German chemist Reinhold Hoffmann (1831–1919) by refluxing glacial acetic acid in the presence of chlorine and sunlight, [4] and then by the French chemist Charles Adolphe Wurtz by ...
Its removal is facilitated by conversion to its Mg(II) complex, which is poorly soluble in toluene or dichloromethane and can be filtered off. [7] An alternative filtration method where ZnCl 2 (TPPO) 2 is formed upon addition of ZnCl 2 may be used with more polar solvents such as ethanol, ethyl acetate and tetrahydrofuran.