Physical Chemical Properties of the 2,3-Butanediols

Abstract

Vol. 68 butyl peroxides have also been prepared having ¿-butyl alcohol of crystallization.3. The pyrolysis of ¿-butyl hydroperoxide has been studied at 95-100°and at 250°. At 95-100°¿ -butyl alcohol and oxygen are the only products formed, while at 250°the products formed are acetone, methyl alcohol, ¿-butyl alcohol, formaldehyde and water.4. The pyrolysis of di-¿-butyl peroxide has been studied at 200, 250 and 300°. Acetone and ethane are the only products formed.5. A free radical mechanism has been proposed to explain the pyrolysis of both ¿-butyl hydroperoxide and di-¿-butyl peroxide.Cambridge 39, Massachusetts

Limiting Activity Coefficients of Diols in Water by a Dew Point Technique

“…The experimental data for the seven diols studied are listed in Table 2, and shown in Figure 3. For four of these diols, some vapor-liquid equilibrium (VLB) data exist, and the measured values of this work are compared with y" values extrapolated from classical VLB measurements in Figures 4 (ethylene glycol) (23-31), 5 (1,2-propanediol) (24, 32, 33), 6 (1,4-butanediol) (33,34), and 7 (2,3-butanediol) (35)(36)(37). The saturation (vapor) pressures for the solutes and water were obtained from Gmehling et al (38,39), who fitted VLB data to provide vapor pressure relations, and Daubert and Danner's tables (40).…”

“…Figure8. Comparison of y" values for water in various diols: ( ) prediction from dew point y" results of the diols in water, ( ) values obtained by other VLE extrapolated sources(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37).…”

Metabolic Engineering Interventions for Sustainable 2,3-Butanediol Production in Gas-Fermenting Clostridium autoethanogenum

“…Blending of 2-butanol with gasoline does not need to modify the current vehicle system ( 9 ). 2,3-BDO can be used as antifreeze agent because of the low freezing point shown by aqueous solutions of its stereoisomers ( 10 , 11 ), and it can be used as a novel chain initiator and extender in the manufacturing of polyol components of polyurethane foams ( 12 ). Furthermore, 2,3-BDO could be exploited in the cosmetics sector due to its humectant, moisturizing, and antimicrobial activities ( 13 ).…”

Highly Stable Phase Change Material Emulsions Fabricated by Interfacial Assembly of Amphiphilic Block Copolymers during Phase Inversion

“…We also controlled the fusion temperature of the aqueous continuous phase by adding meso-2,3-butanediol (m-BDO); m-BDO elevates the melting temperature of the aqueous continuous phase. 17 After the confirmation of the improved emulsion stability, we carried out thermal analysis for the emulsions to figure out how the nanoscale emulsions responsed to the temperature changes.…”

“…The oil selected in this study was n -tetradecane ( n -TD) as a phase change material which is the major temperature stabilizer for ISCs (insulating shipping containers) to be used as transporting temperature-sensitive pharmaceutical products including vaccines requiring storage temperatures in the range of 2–8 °C during cold chain logistics. We also controlled the fusion temperature of the aqueous continuous phase by adding meso-2,3-butanediol (m-BDO); m-BDO elevates the melting temperature of the aqueous continuous phase . After the confirmation of the improved emulsion stability, we carried out thermal analysis for the emulsions to figure out how the nanoscale emulsions responsed to the temperature changes.…”