Detail of "112-32-3"

Reference

Selective photometric determination of octyl formate, octyl propionate, and octylphenyl acetate in the air of industrial plants

Selective photometric determination of octyl formate, octyl propionate, and octylphenyl acetate in the air of industrial plants. Eremyan, E. V.; Davtyan, K. A. (USSR). Prom-st. Arm., (6), 43-5 (Russian) 1977. CODEN: PAKBAG. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 For the selective detn. of octyl alc. [111-87-5], octyl formate [112-32-3], octyl propionate [142-60-9], and octylphenyl acetate [122-45-2] a spectrophotometric-spectrocolorimetric method was developed based on the ninhydrin reaction in H2SO4 medium. Glacial HOAc was used as the solvent for the esters and HCl acid, dild. in 1:1 ratio for the octyl alc. The absorption max. of the reaction products were detd. spectrophotometrically using an SF-4 spectrophotometer, the absorbances were detd. spectrocolorimetrically with a FEK-M spectrocolorimeter, using blue color filter. Calibration plots were made in the range of 5-100 mg in 5 mL as follows: 1 mL of the soln. in HOAc was mixed with 0.2 mL 0.5% aq. ninhydrin soln. and 3 mL H2SO4 then boiled for 10 min on water bath. On cooling, the vol. was made 5 mL with HOAc and after 10 min the absorption spectrum was recorded with an SF-4 app. and at the max. of 380-90 nm (blue filter) the absorbance was measured in a 5-mm cell with an FEK-M app. against reagent blank. The relative error of the method is octyl formate 1.7-8.6, octyl propionate 2.4-9.5, and octaphenyl acetate 1.8-11.6%. Air samples (5 L were passed through 2 mL HOAc for trapping the esters and through 2 mL of HCl-water (1:1) for trapping octyl alc. using Polezhaev's absorbent device, then 1 mL portions of the sorbent liqs. were processed. The limits of the detn. were 5-100 mg in 5 L air.

Thermal conductivity of gaseous octyl and isooctyl formates

Thermal conductivity of gaseous octyl and isooctyl formates. Magerramov, S. G.; Gasanov, N. R. (Azerb. Politekh. Inst., Baku, USSR). Izv. Vyssh. Uchebn. Zaved., Neft Gaz, 29(12), 28, 72 (Russian) 1986. CODEN: IVUNA2. ISSN: 0445-0108. DOCUMENT TYPE: Journal CA Section: 69 (Thermodynamics, Thermochemistry, and Thermal Properties) A method described by S. G. Magerramov (1982) was used to measure the thermal conductivities of the 2 esters as functions of temp. at atm. pressure.Several substances with their cas registry numbers 112-32-3 and 29319-50-4 may be metioned in this study. The results agree fairly well with data for other formates, detd. by Mukhamedzyanov and Usmanov (1971). The thermal conductivities of these gases decrease with increasing mol. wt. of the compd. Exptl. data were correlated as functions of the reduced temps. An attempt was made to express a chem. component to the thermal cond. (due to chem. reactions, e.g. dissocn.) as a function of the binary diffusion and the heat of the reaction. .