Solubility of p-Aminobenzoic Acid Potassium in Organic Solvents and Binary (Water + Isopropyl Alcohol) Mixture at Temperatures from (283.15 to 318.15) K

2018 ◽  
Vol 63 (8) ◽  
pp. 2629-2636 ◽  
Author(s):  
Min Su ◽  
Qing Lu ◽  
Hua Sun ◽  
Jingkang Wang
Keyword(s):  
Organic Solvents ◽  
Isopropyl Alcohol ◽  
Aminobenzoic Acid ◽  
Alcohol Mixture

Pervaporation separation of water-isopropyl alcohol mixture by PVA/LiBr membrane

2018 ◽  
Vol 59 (S1) ◽  
pp. E101-E111 ◽  
Author(s):  
Farinaz Ebrahimian ◽  
Morteza Sadeghi ◽  
Ahmad Moheb ◽  
Mohammadreza Shafiei
Keyword(s):  
Isopropyl Alcohol ◽  
Alcohol Mixture ◽  
Pervaporation Separation

scholarly journals Evaluating the vapour evaporation from the surface of pure organic solvents and their mixtures

2020 ◽  
Vol 3 (1) ◽  
pp. 77 ◽  
Author(s):  
Stepan Akterian
Keyword(s):  
Organic Solvents ◽  
Isopropyl Alcohol ◽  
Edible Oils ◽  
Ventilation System ◽  
Plant Design ◽  
Cosmetic Products ◽  
Plant Materials ◽  
Volatile Organic ◽  
Alcohol Solvents ◽  
Specific Evaporation Rate

Some perfumery and cosmetic products represent mixtures and they include large parts of solvents as ethanol, water, acetone and isopropyl alcohol. Solvents as pure hexane and ethanol-water mix­tures are used in the solvent extraction of oil-bearing plant materials and herbs. The goal of this study was the emissions of volatile solvents released during above pointed productions to be evaluated. It was found that the specific evaporation rate varies from 1.2 kg/(m2.h) (for pure methoxy-propanol) to 66 kg/(m2.h) (for three-com­ponent mixture including acetone). The eva­poration rate is higher for solvents with higher vapour pressure and at a higher velocity of surrounding air. The evaporation is less intensive from pure solvents than their mixtures. The time for the eva­po­ration from a film of solvents and their mixtures was also evaluated. It varies from 10 s (for isopropyl alcohol) to 9 min (for methoxy-propanol).Practical applicationsThe evaluation of volatile solvent emissions is a mandatory step in the design of plants for manufacturing perfumery, cosmetics, deriving essential and edible oils by means of organic solvents. Most of volatile organic solvents used are highly flammable and healthy hazardous. For assuring fire safety and safety-health working conditions and environment the ventilation system must be designed on the base of this emission evaluated. The obtained results were applied for plant design of the company “Star Nails Bulgaria” Ltd. Plovdiv.

Mathematical correlation of 4-aminobenzoic acid solubilities in organic solvents with the abraham solvation parameter model

2004 ◽  
Vol 42 (6) ◽  
pp. 633-641 ◽  
Author(s):  
Charlisa R. Daniels ◽  
Amanda K. Charlton ◽  
Rhiannon M. Wold ◽  
Rebekah J. Moreno ◽  
William E. Acree ◽  
...  
Keyword(s):  
Organic Solvents ◽  
Solvation Parameter Model ◽  
Aminobenzoic Acid ◽  
Mathematical Correlation ◽  
Solvation Parameter

scholarly journals Dispersion of Multiwall Carbon Nanotubes in Organic Solvents through Hydrothermal Supercritical Condition

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Krishnegowda Jagadish ◽  
Shivanna Srikantaswamy ◽  
Kullaiah Byrappa ◽  
Lingaraju Shruthi ◽  
Mavinakere Ramesh Abhilash
Keyword(s):  
Carbon Nanotubes ◽  
Particle Size ◽  
Carbon Nanotube ◽  
Organic Solvents ◽  
Isopropyl Alcohol ◽  
Hydrothermal Reaction ◽  
Multiwall Carbon Nanotubes ◽  
Binding Energies ◽  
Multiwall Carbon Nanotube ◽  
Multiwall Carbon

Multiwall carbon nanotube (MWCNT) composite materials require careful formulation of processing methods to ultimately realize the desired properties. Until now, controlled dispersion of MWCNT remains a challenge, due to strong van der Waals binding energies associated with the MWCNT aggregates. In the present study, an effort has been made to disperse MWCNTs in organic solvents like dichloromethane, ethanol, isopropyl alcohol, and hexane through hydrothermal reaction. Dichloromethane is considered the best solvent for the dispersion of MWCNTs. The characterizations were carried out to find the dispersion design, particle size, and stabilization, which clearly indicate that the desired properties of MWCNTs have been achieved.

TEM study of order, structure and defects of β and martensite in Cu-Al-Mn shape memory alloys

1990 ◽  
Vol 48 (4) ◽  
pp. 188-189
Author(s):  
J.M. Guilemany ◽  
F. Peregrin
Keyword(s):  
Shape Memory ◽  
Orthophosphoric Acid ◽  
Isopropyl Alcohol ◽  
Metastable Phase ◽  
Characteristic Temperature ◽  
Ethanol Solution ◽  
Order Structure ◽  
Thin Foils ◽  
Polycrystalline Alloys ◽  
Diamond Saw

The shape memory effect (SME) shown by Cu-Al-Mn alloys stems from the thermoelastic martensitic transformation occuring between a β (L2,) metastable phase and a martensitic phase. The TEM study of both phases in single and polycrystalline Cu-Al-Mn alloys give us greater knowledge of the structure, order and defects.The alloys were obtained by vacuum melting of Cu, Al and Mn and single crystals were obtained from polycrystalline alloys using a modified Bridgman method. Four different alloys were used with (e/a) ranging from 1.41 to 1.46 . Two different heat treatments were used and the alloys also underwent thermal cycling throughout their characteristic temperature range -Ms, Mf, As, Af-. The specimens were cut using a low speed diamond saw and discs were mechanically thinned to 100 μm and then ion milled to perforation at 4 kV. Some thin foils were also prepared by twin-jet electropolishing, using a (1:10:50:50) urea: isopropyl alcohol: orthophosphoric acid: ethanol solution at 20°C. The foils were examinated on a TEM operated at 200 kV.

Sign in / Sign up

Export Citation Format

Share Document