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### Rotary Evaporators Fisher Scientific

2. BUCHI Rotavapor™ R-300 Rotary Evaporator with Controller. The R-300 meets the highest expectations in convenience and versatility. Its modular design allows extension of the Rotavapor™ R-300 to a fully integrated system where a central interface regulates each component. Promotions are available.

### Solved 3. A student exxtracted their product into ether ...

3. A student exxtracted their product into ether ether and proceeded to immediately remove the ether ono rotary evaporator. What critical step did this student miss in this process? (6 points) Question: 3. A student exxtracted their product into ether ether and proceeded to immediately remove the ether ono rotary evaporator.

### Rotary Evaporator Fact Sheet - UMass Amherst

A rotary evaporator (also called as “rotavap” or “rotovap”) is a device used in labs for the efficient and gentle removal of solvents from samples by evaporation. The picture on the right shows what a typical rotary evaporator includes. What are Potential Hazards?

### Extraction - Stockton University

A superior procedure for recovering the naphthalene from the ether layer uses a rotary evaporator. This device is often used in research laboratories to quickly remove low boiling solvents from reaction mixtures by heating the mixture under a …

### How to use a Rotary Evaporator - University of California ...

Apr 01, 2010 2. The flask with the solution is placed on the rotary evaporator. The use of a bump trap prevents the solution from accidentally splashing into the condenser (and being contaminated). It is highly advisable to start with a clean bump bulb in case something bumps over after all! This would allow the experimenter to recover the solution or solid. 3.

### Training Papers Distillation with a Rotary Evaporator

BCHI Training papers Distillation with a Rotary Evaporator 4 Advantages of the rotary evaporator (compared with static apparatus) Rotary evaporators are used for: 3 3.1 Rotavapor models 3.3.1 Glass assembly With a vacuum rotary evaporator you can carry out single-stage distilla-tion runs quickly and gently. The evaporation capacity of a ...

### Rotary Evaporators Fisher Scientific

Bump Trap, 250mL, Rotary Evaporator, Modified, 24/40 Top Outer, 14/20 Lower Inner. Similar to CG-1320, but with the addition of two 4mm drain holes at the base of the inner tube to allow solvent to drain back into the evaporation flask. Traps have a 24/40 top outer joint and the listed size of lower inner joint.

### Laboratory Rotary Evaporaors - McMaster University

If another rotary evaporator is using the same pump ensure you have first closed the stopcock between the solvent trap and the pump prior to evacuating your system. Do not close the stopcock with the ‘X’. ... C2H2Cl2 97.0 314 48 1.257 751 Diisopropyl ether C6H14O 102.0 318 68 0.724 375 Dioxane C4H8O2 88.1 406 101 1.034 107 Dimethylformamide ...

### The Glassware Gallery: Rotary Evaporators

Jun 12, 2016 A typical rotary evaporator has a heatable water bath to keep the solvent from cooling or even freezing during the evaporation process. The solvent is removed under vacuum, is trapped by a condenser and is collected for easy reuse or disposal. Most labs use a simple water aspirator vacuum on their rotavaps, so a rotavap can not be used for air ...

### The Boiling or Evaporation of Diethyl Ether - Stack Exchange

May 18, 2017 I realised recently that during an ether extraction of a product, a lot of ether had evaporated, as was evident from the mass balance. The ether vapours were visible, but no boiling, or fluid motion that we tend to associate with boiling, was observed. The boiling point of ether is $34.6\ \mathrm{^\circ C}$.

### AI Rotovaps for Solvent Recovery Fractional Distillation ...

Nov 04, 2015 Our new SolventVap rotary evaporators are built for making clean, clear concentrates, and we offer 4 different sizes that match any lab’s production needs or budget. If you have any questions or comments about our rotary evaporators and their usage, leave us a comment below, link up with us on Instagram and Facebook, or call 888-988-0899 to ...

### Peroxide Explosion Injures Campus Researcher Office of ...

Nov 30, 2006 The researcher was using a rotary evaporator (rotovap) to remove organic solvents from an azobenzene precipitate. She adjusted the bottom flask which then exploded sending glass towards her face, hitting her safety goggles and forehead. ... Both tetrahydrofuran (THF) and diethyl ether were used in the reaction, and both of these solvents form ...

### Petroleum ether extract of Chenopodium album L. prevents ...

Oct 03, 2016 The present findings demonstrated that the petroleum ether ... Extracts were filtered and concentrated using a rotary evaporator to evaporate until they were dry. All the dried extracts were weighed and solved with 99.9% (v/v) DMSO (Beyotime Institute of Biotechnology, Haimen, China) to prepare stock solutions at concentration of 100 mg/ml ...

### Vacuum Pump Explosion in Chemistry Building PennEHRS

Oct 21, 2021 Diethyl ether, which was evaporated using this system earlier in the day, may have been pulled into the vacuum pump and then been exhausted into the cabinet. ... Any rotary evaporator systems that are using rotary vane pumps should be reviewed to determine whether the vacuum pressure is appropriate to the application and is well controlled.

### what is the usage of a rotary evaporator (rotovap)? - Lab ...

Rotary evaporation is a technique most commonly used in organic chemistry to remove a solvent from a higher-boiling point compound of interest. The rotary evaporator, or “rotovap“, was invented in 1950 by the chemist Lyman C. Craig. The primary use of a rotovap is to dry and purify samples for downstream applications. Its speed and ability to handle large volumes of …

### rotary evaporator distillation: operation steps of rotary ...

Rotary evaporator is an ideal instrument necessary for the concentration, drying and recycling relied on by the chemical industry, pharmaceutical industry, foods, environmental protection, universities and colleges, and research laboratories and so on, and especially adaptable to the small scale production unit.

### ROTARY EVAPORATOR RE200 RE500 - Cole-Parmer

ROTARY EVAPORATOR RE200 RE500 First Edition Thank you for your Yamato Scientific RE Series Rotary Evaporator purchase. ... Ethyl ether, Gasoline, Acetaldehyde, Propylene Oxide, Carbon disulfide, and other flammable substances with a flash point below minus 30C.

### Peroxide Forming Solvents - University of Utah

rotary evaporator to remove THF and diethyl ether from an azobenzene precipitate. •THF and diethyl ether form peroxides over time •She adjusted the bottom flask which then exploded sending glass towards her face, hitting her safety goggles and forehead. •Concentrated peroxides in the round bottom were shock sensitive

### Rotary Evaporator Only Information

rotary evaporator. Many manufacturers do not recommend a water bath temperature higher than 60 degrees Celsius, but it is possible to adjust the water baths for higher temperatures. Other variables should be adjusted if running the bath at higher temperatures. The table below gives values for the 20/40/60 Rule regarding 710 Spirits. 20/40/60 Rule

### Title: Rotary Evaporator Page 1 of 6 ROTARY EVAPORATOR

Rotary evaporators (also called rotavaps or rotovaps) are used to remove solvents from reaction mixtures. Liquid solvents can be removed without excessive heating of the sample by lowering the ... Diethyl Ether 60-29-7 35 -40 IA 2, 4, 0 extremely flamm. liquid and vapor Ethanol 64-17-5 78 14 IB 2, 3, 0 highly flammable liquid and vapor ...

### Rotary Evaporation

Rotary Evaporators Removal of solvents by simple distillation is a tedious procedure, complicated by setup and cleaning of the apparatus. A major advance in efficiency is achieved by using a rotary evaporator (rotovap). This cuts the distillation time for eliminating ether from a couple of hours down to 20 minutes or so.

### Rotary Evaporator Overview - Lab Instrument Manufacturer

Rotary evaporators, commonly known as rotavapors, rotavaps or rotovaps, are extremely valuable to a number of downstream applications requiring efficient distillation solvent removal.Often combined with a vacuum pump, rotary evaporators are used to remove solvents from samples through evaporation. During this process, rotary evaporators reduce the …

### Solvent Removal

Rotary evaporators, or rotovaps, are standard equipment in most organic chemistry research labs. These evaporators are designed to remove solvent rapidly from solutions. In the Organic Chemistry Teaching Labs at CU Boulder, we have 5 rotovaps on carts so that we can move them to where they are needed. The motor in the rotovap turns the flask ...

### Strategies for safe evaporation of solutions containing ...

Single samples containing HCl are often dried in a rotary evaporator in which the majority of the wetted components are made of glass and are therefore resistant to acid attack. Commonly commercially available rotary evaporators use a dry running PTFE lined vacuum pump to create the vacuum. However, even with a dry ice cooled

### Ether Functionalisation Ion Conformation and the ...

temperature and the organic solvent removed by rotary evaporation. The solid residue was dissolved in a minimal amount of water and extracted three times with about 300 mL of diethyl ether. The combined organic extracts were dried over magnesium sulphate and filtered, followed by removal of the solvent on a rotary evaporator.

### Operation of the Rotary Evaporator (Rotovap)

The rotary evaporator is an instrument that is designed to allow you to distill a liquid under conditions of reduced pressure. Since the pressure within the system has been reduced, that means that the liquid can now distill at a lower temperature than it would at atmospheric pressure. This is a very safe and fast method of distilling flammable ...

### The Rotary Evaporator

The Rotary Evaporator It is commonly taught in General Chemistry classes that the vapor pressure of a liquid or solid varies directly with temperature, i.e., the higher the temperature of a substance, the higher its ... cases, when you are removing a very volatile solvent such as diethyl ether or dichloromethane, this is essential. 8. The steps ...

### Diethyl Ether Rotovap

Title: Rotary Evaporator Page 1 of 6 ROTARY EVAPORATOR Diethyl Ether 60-29-7 35 -40 IA 2, 4, 0 extremely flamm. liquid and vapor Ethanol 64-17-5 78 14 IB 2, 3, 0 highly flammable liquid and vapor ... ☐Note placed in front of the rotovap to indicate to others what chemicals are being used. ☐Solvent trap is emptied and bump trap is …

### Rotary Evaporator Trap at Thomas Scientific

Vapor tube/bump trap adapter is designed to be used with the Bchi R-200/205 rotary evaporators. This adapter combines a vapor tube adapter and a bump trap. Trap has an extra coarse fritted disc sealed between the lower inner joint and the top flange. Adapters have a 50mm OD top flange….

### LESSON LEARNED Peroxide Explosion Injures Campus ...

was using a rotary evaporator (rotovap) to remove organic solvents from an azobenzene precipitate. She ... ether were used in the reaction, and both of these solvents form peroxides over time. In this case, the THF used did not contain a stabilizer (such as BHT) to slow the rate of peroxide formation and the four-liter ...

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