Combustion calorimetry of organic fluorine compounds. The heats of combustion and formation of the difluorobenzenes, 4-fluorotoluene and m-trifluorotoluic acid

Journal Article · Wed Aug 01 00:00:00 EDT 1962 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100814a035· OSTI ID:7319840

Good, W D; Lacina, J L; Scott, D W; McCullough, J P

The heats of combustion of five aromatic fluorine compounds were determined by a rotating-bomb method of combustion calorimetry. The suitability of m-trifluorotoluic acid (..cap alpha.., ..cap alpha.., ..cap alpha..-trifluoro-m-toluic acid) as a reference substance for the combustion calorimetry of organic fluorine compounds was investigated. The following values, in kcal. mole/sup -1/, are reported for the standard heats of formation, ..delta..Hf/sup 0//sub 298.15/, from graphite and gaseous hydrogen, oxygen, and fluorine: 4(fuorotoluene(g), -34.01; 1,2-difluorobenzene(g), -67.65; 1,3-difluorobenzene(g), -71.35, 1,4-difluorobenzene(g), -70.69, and m-trifluorotoluic acid(c), -251.78.

• Research Organization: Bureau of Mines, Bartlesville, OK
• OSTI ID: 7319840
• Journal Information: J. Phys. Chem.; (United States), Vol. 66
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
FLUORINATED AROMATIC HYDROCARBONS
COMBUSTION HEAT
CALORIMETRY
AROMATICS
ENERGY
ENTHALPY
HALOGENATED AROMATIC HYDROCARBONS
HEAT
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
PHYSICAL PROPERTIES
REACTION HEAT
THERMODYNAMIC PROPERTIES
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)