Toluene

Toluene (/ ˈ t ɒ lj u iː n /) also known as toluol (/ ˈ t ɒ lj u ɒ l /) is an aromatic hydrocarbon It is a colorless water-insoluble liquid with the smell associated with paint thinners It is a mono-substituted benzene derivative consisting of a CH 3 group attached to a phenyl group As such its IUPAC systematic name is methylbenzene Toluene is predominantly used as an industrial

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Ultrastable Mesoporous Hydrogen

(18M) water (pH 1 12 and 14) PBS (pH 7 2) or boiling water for 24 h The samples were then isolated by centrifugation and washed by water (3 x 45 mL) and acetone (3 x 45 mL) dried under vacuum at 80 C for 12 hours before PXRD or N 2 adsorption test Mass balance test 50 mg of HOF powder was immersed in 30 mL of water (pH 14) at room

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Experimental Section Materials N times from benzene

anhydrous DMF (300 mL) was added 6 5 mL -Chloropropanol 3(7 4 g 78 mmol) The reaction mixture were kept at 70 for 24 h under N C 2 After cooled to room temperature most solvent was removed under and the resulting reduced pressure mixture was precipitated in water The precipitate was dissolved in and DMF precipitated again into an excess

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Principles of Vacuum Evaporation

Figure 1 ΠPlot of boiling point vs pressure for some common solvents It can be seen from Figure 1 that to achieve low temperature boiling of high boiling point solvents (e g DMSO or DMF) you need to achieve better levels of vacuum Methanol may be boiled

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Electronic Supplementary Information

DMF) then washed three times with a lower boiling point solvent acetone (30 mL) Then the product was soaked with acetone overnight to ensure complete removal of DMF The sample was then activated at 120 ⁰C under vacuum for 12 hours at a heating rate of 2⁰C/min

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Boiling Point Calculator

Enter 760 (millimeters of mercury or 1013 hPa -- units do not matter) as the pressure value and 100 as the boiling point Now you can calculate its boiling point under any pressure Type 15 in the second left field and 18 will appear in the second right field

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Vacuum Pump and Systems Catalog

DMF and other solvents with boiling point 160 C Model 2025 general usage meter vacuum read-out vacuum regulator 9torr ultimate vacuum for fast stripping of most common rotary evaporation solvents Fast stripping of rotary evaporator solvents with boiling point 100 C • Anti-bumping / foaming feature with controlled evaporation rate

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Dimethylformamide — Wikipedia Republished // WIKI 2

DMF undergoes decarbonylation near its boiling point to give dimethylamine Distillation is therefore conducted under reduced pressure at lower temperatures In one of its main uses in organic synthesis DMF is a reagent in the Vilsmeier–Haack reaction which is used to formylate aromatic compounds

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Electronic Supplementary Information

DMF) then washed three times with a lower boiling point solvent acetone (30 mL) Then the product was soaked with acetone overnight to ensure complete removal of DMF The sample was then activated at 120 ⁰C under vacuum for 12 hours at a heating rate of 2⁰C/min

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Rotary evaporator

The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor The boiling point of a liquid varies depending upon the surrounding pressure A liquid in a partial vacuum has a lower boiling point than when that liquid is at atmospheric pressure

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Boiling toluene/water azeotrope mixture?

4/14/2012The mixture of toluene/water was heated to its boiling point (without a condenser) of about 84C Over the course of under a few minutes the boiling point increased rapidly and then remained constant at about 96C (more or less- it jumped up and down a lot but stayed in the same range)

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dmso boiling point water

Tricks of the Trade for Removing High Boiling Point Solvents Usually we mean things with a boiling point significantly higher than water The graph below shows a range of solvents with two well known HBP solvents • DMF (Dimethylformamide ) • DMSO (Dimethylsulfoxide) occurring to the left of water (which is in yellow) on the graph

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SpeedVac Vacuum Concentrators

By applying a controlled vacuum the boiling point of the solvents can be lowered to the point that the liquid vaporizes with minimal heat which prevents oxidation of samples during the drying process High performance vacuum pumps ensure the low pressures which are required for faster solvent removal

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APPLIED VACUUM TECHNOLOGY

solvents with boiling point 110 C Model 2026 adjustable high vacuum Analog vacuum read-out DMF and other solvents with boiling point 160 C Model 2027 digital adjustable high vacuum Digital vacuum read-out vacuum regulator 2 torr ultimate vacuum for fast stripping DMF and other solvents with boiling point 160 C

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Cyclopentadiene

IDENTIFICATION: 1 3-Cyclopentadiene has an irritating terpene like odor It is a colorless liquid It will dissolve in water and evaporates quickly from water and soil surfaces 1 3-Cyclopentadiene will polymerize to form dicyclopentadiene in a short time at room temperature USE: 1 3-Cyclopentadiene is used in the manufacturing of resins

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Chapter 18 Ethanol distillation: the fundamentals

lower boiling point d a bottoms product containing the component of the feed possessing the higher boiling point e an overhead heat exchanger (condenser) normally water-cooled to condense the vapor resulting from the boiling created by the energy input The overhead vapor after condensation is split into two streams One

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Applied Vacuum Technology

Digital vacuum read-out vacuum regulator 2 Torr ultimate vacuum for fast stripping DMF and other solvents with boiling point 160 C Model 2025general usage meter vacuum read-out vacuum regulator 9 Torr ultimate vacuum for fast stripping of most common rotary evaporation solvents

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Table of contents

boiling point of 25C lower results 3 Set the cooling temperature another 20C lower If the distillation performs too slowly either increase vacuum or heating temperature Aerate respectively decrease vacuum when sample is foaming or bumping Distillation of problematic solutions can be distilled

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