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Journal of Thermal Analysis and Calorimetry
Authors: Xing Xiaoling, Xue Liang, Zhao Fengqi, Yi Jianhua, Gao Hongxu, Xu Siyu, Pei Qing, Hao Haixia, and Hu Rongzu

as RDX and HMX. Its preparation [ 2 , 3 ], properties [ 4 , 5 ], and thermal behavior [ 6 , 7 ] have been reported widely. In the present article, we reported its enthalpy of dissolution in ethyl acetate and acetone, and four kinds of

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Abstract  

Cumene hydroperoxide (CHP) being catalyzed by acid is one of the crucial processes for producing phenol and acetone globally. However, it is thermally unstable to the runaway reaction readily. In this study, various concentrations of phenol and acetone were added into CHP for determination of thermal hazards. Differential scanning calorimetry (DSC) tests were used to obtain the parameters of exothermic behaviors under dynamic screening. The parameters included exothermic onset temperature (T 0), heat of decomposition (ΔH d), and exothermic peak temperature (T p). Vent sizing package 2 (VSP2) was employed to receive the maximum pressure (P max), the maximum temperature (T max), the self-heating rate (dT/dt), maximum pressure rise rate ((dP/dt)max), and adiabatic time to maximum rate ((TMR)ad) under the worst case. Finally, a procedure for predicting thermal hazard data was developed. The results revealed that phenol and acetone sharply caused a exothermic reaction of CHP. As a result, phenol and acetone are important indicators that may cause a thermal hazard in the manufacturing process.

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Fire and explosion hazard evaluation for the acetone aqueous solutions

Using weighting analysis of influence factors by grey system theory and 20-L-apparatus flammability investigations

Journal of Thermal Analysis and Calorimetry
Authors: Yi-Ming Chang, Mei-Li You, Chien-Hung Lin, Siou-Yuan Wu, Jo-Ming Tseng, Chun-Ping Lin, Yaw-Long Wang, and Chi-Min Shu

Introduction Acetone (CH 3 COCH 3 ), also known as propanone, dimethyl ketone or 2-propanone, is the simplest representative of the ketones industrially [ 1 , 2 ]. For the high volatility and readily soluble properties in

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, A. (1952): The estimation of acetone bodies. Biochem. J. , 51 , 218-223. The estimation of acetone bodies. Biochem. J. 51

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to mono, di and triacetyl esters [ 13 ], wherein the triacetin is known to have some applications going from cosmetics to fuel additive. It has been discovered that glycerol can be acetylized with acetone ( Scheme 1 ) to produce the branched oxygen

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Abstract  

Triacetone triperoxide (TATP), also known as acetone peroxide, is a powerful homemade energetic compound, highly unstable and not detectable by traditional detection technologies. The calorimetric profiles of TATP mixtures with TNT, ammonium nitrate, and nitroguanidine were evaluated and compared to pure materials. Raman spectroscopy was used to identify possible interactions between mixture components that may arise on contact. Typical results show a shift of the TATP decomposition temperature to higher temperatures, as well as decomposition of the nitrocompound initiated by TATP decomposition. The vibrational spectra were used as spectroscopic signatures for these mixtures, which can be used to understand detection challenges and for the development of desensitization approaches.

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phosphate, CuHPO 4 ·H 2 O, has led us to search of new synthesis routes on organic solvent media. Organic molecules, methanol, ethanol, or acetone are widely used in the chemical synthesis, play an important role in shaping inorganic microcrystals and can

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Abstract  

A radiotracer based method for the determination of the rate of expel of a swelling agent from a swelling agent saturated polymer foil induced by a second organic liquid (i.e., blowing agent for foaming of polymers) has been set up and tested. The method was applied to acetone swollen polyetherimide (PEI) foil and 1,1,1-trichloroethane and ethanol (blowing agents) systems. By combining the results of radiotracer measurements with those obtained by measuring foil weights, the amount of the respective blowing agents that replaced acetone in the PEI foil was determined.

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Abstract  

Neutron activation analysis was used to study the dechlorination of transformer oils containing 2000 ppm of polychlorinated biphenyls by solvent extraction with acetone. The distribution coefficients of PCBs between acetone and oil have been measured and they vary from 1.25 to 1.45. The concentration of PCBs in the oil can be reduced from 2000 ppm to less than 25 ppm in five extraction cycles.

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Abstract  

The molar heat capacities of the pure samples of acetone and methanol, and the azeotropic mixture composed of acetone and methanol were measured with an adiabatic calorimeter in the temperature range 78–320 K. The solid–solid and solid–liquid phase transitions of the pure samples and the mixture were determined based on the curve of the heat capacity with respect to temperature. The phase transitions took place at 126.160.68 and 178.961.47 K for the sample of acetone, 157.790.95 and 175.930.95 K for methanol, which were corresponding to the solid–solid and the solid–liquid phase transitions of the acetone and the methanol, respectively. And the phase transitions occurred at 126.580.24, 157.160.42, 175.500.46 and 179.740.89 K corresponding to the solid–solid and the solid–liquid phase transitions of the acetone and the methanol in the mixture, respectively. The thermodynamic functions and the excess thermodynamic functions of the mixture relative to standard temperature 298.15 K were derived based on the relationships of the thermodynamic functions and the function of the measured heat capacity with respect to temperature.

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