Isopropyl alcohol

About: Isopropyl alcohol is a research topic. Over the lifetime, 3064 publications have been published within this topic receiving 27354 citations. The topic is also known as: Rubbing Alcohol & Propan-2-ol.

Measurement and Correlation of the Solubilities of l-Valine in Water, Ethanol, N,N-Dimethylformamide, Acetone, and Isopropyl Alcohol between (293.15 and 343.15) K

Abstract: The solubilities of l-valine in water, ethanol, N,N-dimethylformamide, acetone, and isopropyl alcohol were experimentally measured by the synthetic method over the temperature range from (293.15 to 343.15) K at atmosphere pressure. The solubilities of l-valine in pure solvents increase with increasing temperature and in the following order: acetone < N,N-dimethylformamide < isopropyl alcohol < ethanol < water. The solubilities correlated using the modified Apelblat model show good agreement with the experimental data, and the dissolution enthalpy, dissolution entropy, and the molar Gibbs energy were predicted. The experimental solubilities and the modified Apelblat model can be used as essential data and model in the industrial manufacturing process of l-valine.

Hydration of hydroxyl and amino groups examined by molecular dynamics and neutron scattering.

Abstract: Neutron diffraction with isotopic substitution was performed on aqueous solutions of isopropyl alcohol and isopropylamine. The difference between these two measurements primarily contains information about the different hydration of the alcohol and amino group. This data is used as a test of the accuracy of molecular dynamic simulations of the same systems. Having established the level of accuracy of the modeling, it is employed as an interpretive tool for the experimental data. Even though the alcohol and the amine possess comparable hydrogen bonding capabilities, consisting respectively of either two hydrogen bond acceptors and one donor, or two hydrogen bond donors and one acceptor, we find significant differences in the hydration of the hydroxyl and amino groups.

Process for obtaining pancreatin with high apparent density

Abstract: Pancreatin with high apparent density can be obtained by autolysis of an aqueous suspension of pancreatic tissue, removing fibres, water and fats, precipitating it and drying the precipitate, and by the precipitated pancreatin being adjusted by stirring with isopropyl alcohol or acetone to a concentration between 70 and 85% isopropanol or 80 to 95% acetone, being removed by filtration with suction or centrifugation, and dried, treating with dry air or nitrogen.

Spontaneously ignitable fire starter composition

Abstract: A new and improved fire starter composition includes a liquid fuel component, a solid oxidant component retained in separation from the liquid fuel component until ready for use, and a blend of the liquid fuel component and the solid oxidant component for starting a fire. The liquid fuel component is selected from the group consisting of glycerin, ethyl alcohol, isopropyl alcohol, and methanol, and mixtures thereof. The solid oxidant component is selected from the group consisting of potassium permanganate and potassium dichromate. More specifically, the solid oxidant component is powdered potassium permanganate. In addition, a method is provided for starting a fire, wherein the method includes the steps of: obtaining a quantity of a solid fuel material; adding a quantity of a powdered solid oxidant material to the solid fuel material to obtain a blend of solid fuel material and solid oxidant; adding a quantity of a liquid fuel material to the blend of solid fuel material and solid oxidant; and waiting for a fire to spontaneously burst into flame. In carrying out the method of the invention, the solid oxidant material is selected from the group consisting of potassium permanganate and potassium dichromate; and the liquid fuel material is selected from the group consisting of glycerin, ethyl alcohol, isopropyl alcohol, and methanol, and mixtures thereof.

Solubility of Sucralose in Different Solvents from (283.15 to 333.15) K

Abstract: The solubility of sucralose in water, methanol, ethanol, and isopropyl alcohol from (283.15 to 333.15) K was measured by an isothermal method. The results show that the solubility of sucralose in the four solvents increases with the increasing temperature. The experimental solubility data were correlated by the modified Apelblat equation, and the calculated values were in good agreement with the experimental data.