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Organic Chem 2 LAB Flashcards | Quizlet

Organic Chem 2 LAB Flashcards | Quizlet

What do you do if a solution is NOT drying in the rotovap? Add cold pentane. Purpose of Wittig Reaction. To convert 9-anthraldehyde into Trans-9-(2-penylethenyl) anthracene by adding phosphorus ylide and see stereochem through NMR. Reactants of Wittig.

How to use a Rotary Evaporator

How to use a Rotary Evaporator

3. A metal or Keck clip is used to secure the flask and the bump trap. The green one shown below fits 24/40 ground glass joints. Similar blue clips fit 19/22 joints and the yellow ones fit 14/20 joints, which will most likely used in the lab.

Future4200

Future4200

The Future Is Now. In order to advertise your hemp products on this site, you must follow these directions: You will need to provide me samples (1g or a single unit) with COAs of any products you wish to advertise on this site.

CHEM 213 Experiment 5: Distillations Post-Lab

CHEM 213 Experiment 5: Distillations Post-Lab

a. What is the boiling point of a mixture of 60% hexane and 40% pentane? b. What are the constituents of the vapor above this solution? c. How many theoretical plates are necessary to give practically pure pentane at the start of a distillation? 3. Consider your fractional distillation. a. What was the purpose of adding the packing material? b.

The MSDS HyperGlossary: Evaporation Rate

The MSDS HyperGlossary: Evaporation Rate

Safety Data Sheets: An evaporation rate is the rate at which a material will vaporize (evaporate, change from liquid to vapor) compared to the rate of vaporization of a specific known material. This quantity is a ratio, therefore it is unitless. General usage: The mass of material that evaporates from a surface per unit time (examples: 3 grams per square meter per hour, 1 inch per acre per month).

Select a Suitable Vacuum Pump for Your Rotary Evaporator .

Select a Suitable Vacuum Pump for Your Rotary Evaporator .

Different solvents has different boiling points, solvents with a low boiling point such as acetone, methylene chloride and pentane, do not require as deep of an end vacuum to evaporate; solvents with a low boiling point such as water, DMSO, DMF and toluene requires a relatively deep end vacuum.

The MSDS HyperGlossary: Evaporation Rate

The MSDS HyperGlossary: Evaporation Rate

Safety Data Sheets: An evaporation rate is the rate at which a material will vaporize (evaporate, change from liquid to vapor) compared to the rate of vaporization of a specific known material. This quantity is a ratio, therefore it is unitless. General usage: The mass of material that evaporates from a surface per unit time (examples: 3 grams per square meter per hour, 1 inch per acre per month).

Research - Liu Lab on Energy Conversion and Catalysis (L2EC)

Research - Liu Lab on Energy Conversion and Catalysis (L2EC)

The third theme in our group is directed on the development of well-defined molecular catalysts based on inexpensive metals (e.g. Mn, Fe, Ni, Co, W, Mo) to handle homogenous catalysis that is traditionally achieved by precious metal (e.g. Rh, Ir, and Pd) based catalysts. To realize "base metals for noble tasks", we pay particular attention to ligand design and take fully advantage of the .

The

The "Golden Rule" for Solvent Removal

The "Golden Rule" for Solvent Removal S olvent removal remains an unavoidable process that scientists and engineers must perform on scales ranging from a few milliliters to

Organic Chem 2 LAB Flashcards | Quizlet

Organic Chem 2 LAB Flashcards | Quizlet

What do you do if a solution is NOT drying in the rotovap? Add cold pentane. Purpose of Wittig Reaction. To convert 9-anthraldehyde into Trans-9-(2-penylethenyl) anthracene by adding phosphorus ylide and see stereochem through NMR. Reactants of Wittig.

Supplementary Information: H Production Mediated by CO via .

Supplementary Information: H Production Mediated by CO via .

through celite, and the solvent was removed on a rotovap. Pentane (100 mL) was added to the resulting yellow oil and the product was sonicated for 30 minutes, which resulted in a white solid that was collected on a medium porosity frit and washed with pentane. Yield: 5.65 g (74%). 1H NMR (300 MHz, CDCl

Pyridine Is miscible with EVERYTHING!? : chemistry

Pyridine Is miscible with EVERYTHING!? : chemistry

Really need some help; need to do an extraction from Pyridine so obviously I need a non miscible solvent but pyridine seems to be compatible with nearly all solvents, .

Home | Environmental Health & Safety | UCI

Home | Environmental Health & Safety | UCI

It is a good idea to cool the receiving flask (e.x. solvent reservoir); it prevents any solvent from evaporating from the receiving flask, especially for low boiling solvents (e.g. pentane). Connect the bump trap to the rotovap and secure with the metal clip or a keck clip depending on the model of rotovap (pictured below).

Getting the green and waxes out afterwards | THCFarmer .

Getting the green and waxes out afterwards | THCFarmer .

Feb 12, 2012 · Not an unexpected taste treat, because as many of ya'll know, lighter fluid is in point of fact light naphtha, which is a blend of pentane (5 carbon atom chain) and hexane (6 carbon atom chain). Most of skunk pharm oil goes into oral or topical medications, though some is vaporized.

Solvent Boiling Points Chart

Solvent Boiling Points Chart

Solvent Boiling Points Chart (all boiling points at standard pressure) Solvent Boiling Point (°C) Solvent Boiling Point (°C) Acetic Acid 118.0 Ethyl Acetate 77.1 Acetic Acid Anhydride 139.0 Ethyl Ether 34.6 Acetone 56.3 Ethylene Dichloride 83.5 Acetonitrile 81.6 Ethylene Glycol 197.5 Benzene 80.1 Heptane 98.4 iso-Butanol 107.7 n-Hexane 68.7 n-Butanol 117.7 Hydrochloric Acid 84.8 tert-Butanol .

Hemp Oil Extraction & Processing Equipment | Cedarstone .

Hemp Oil Extraction & Processing Equipment | Cedarstone .

Cedarstone Industry. 7432 Fairbanks North Houston Rd Houston, TX 77040 Tel: (281) 397-3700 Fax: (281) 397-3940. Sales Inquiries: [email protected]

Chem 331L Final Flashcards | Quizlet

Chem 331L Final Flashcards | Quizlet

Start studying Chem 331L Final. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Pressure-Temperature Nomograph Interactive Tool | Sigma .

Pressure-Temperature Nomograph Interactive Tool | Sigma .

Calculate a boiling point or pressure using the Antoine Equation: The Pressure-Temperature Nomograph is a graphical application of the Clausius-Clapeyron Equation, which assumes the heat of vaporization is a constant over a pressure range.

Solvent Removal - Organic Chemistry

Solvent Removal - Organic Chemistry

The motor in the rotovap turns the flask rapidly, providing a greater surface from which evaporation can occur and speeding up the process. Cooling coils in the rotovap condense the vapors and drop them into a collection flask so that they can be recycled or properly disposed. The roto-vap is connected to a vacuum source, and again, this speeds .

Ultimate Cannabis Extraction Guide | Precision Blog

Ultimate Cannabis Extraction Guide | Precision Blog

15L/h recovery rate with 50L UL listed rotovap; 2.25H processing time per run (single batch with full recovery) 3H processing time (triple batch with full recovery) Rated for low temp conditions (-40C or below recommended) 8-15lbs per batch capacity (see yield .

Extraction and Washing Guide - MIT OpenCourseWare

Extraction and Washing Guide - MIT OpenCourseWare

paper and a large funnel (or the Büchner method). To guard against bumping on the rotovap, do not fill the flask more than half full. 10) Concentrate the solution on the rotovap then dissolve the compound in a small amount of solvent and transfer to a small pre-weighed (tared) flask. 11) Concentrate the solution on the rotovap again.

Methyl Migration to Coordinated CO

Methyl Migration to Coordinated CO

THF is removed on the rotovap to afford the crude product. 2nd Lab Period Part A: Preparation of Cyclopentadienylmethyliron dicarbonyl (5) continued. Extract the crude product with pentane and filter. Rotovap the resulting orange solution to afford solid compound 5. Product Characterization: Record the 1H NMR spectrum of 5 in CDCl

Erowid Chemistry Vaults : Organic Solvents Table of Properties

Erowid Chemistry Vaults : Organic Solvents Table of Properties

Notes: "M" in the water solubility column means completely Miscible in water. The values in the table below except for relative polarities have been extracted from MSDS compilations (see section II-B-4 of the Chemistry Webercises Directory) or the ChemFinder Web Server.Values for relative polarity have been extracted from: Christian Reichardt, Solvents and Solvent Effects in Organic Chemistry .

Future4200

Future4200

The Future Is Now. In order to advertise your hemp products on this site, you must follow these directions: You will need to provide me samples (1g or a single unit) with COAs of any products you wish to advertise on this site.

What Are THCA, CBD, & Other Crystalline Cannabinoids? | Leafly

What Are THCA, CBD, & Other Crystalline Cannabinoids? | Leafly

Mar 22, 2018 · Each solvent is added and subsequently removed by use of the rotovap. Once the final separation is complete, the remaining product will be 99% pure crystalline cannabinoids. How to .

CHEM 213 Technique Experiments

CHEM 213 Technique Experiments

CHEM 213 Technique Experiments Experiment 7: Column Chromatography Number of labs - one Reactions performed – None Chemicals used: Fluorene-fluorenone mixture, hexanes, methylene chloride, silica gel Supplies needed: Various sized beakers, chromatography column Techniques: Column chromatography, rotovap Prelab Reading Assignment: Laboratory Techniques in Organic Chemistry, .

Rotary evaporator - Wikipedia

Rotary evaporator - Wikipedia

A rotary evaporator (or rotavap /rotovap) is a device used in chemical laboratories for the efficient and gentle removal of solvents from samples by evaporation.When referenced in the chemistry research literature, description of the use of this technique and equipment may include the phrase "rotary evaporator", though use is often rather signaled by other language (e.g., "the sample was .

How to Select a Vacuum Pump for Rotary Evaporation? - Lab .

How to Select a Vacuum Pump for Rotary Evaporation? - Lab .

Applying vacuum using a pump is either helpful or necessary in most rotovap applications as it reduces the pressure within the system. This lowers the boiling . to the different boiling points of solvents. Solvents with a low boiling point, like acetone, methylene chloride and pentane, do not require as deep of an end vacuum to evaporate as .

Advanced Refinement Techniques - Cannabis Alchemy

Advanced Refinement Techniques - Cannabis Alchemy

Advanced Refinement Techniques Cannabis Alchemy. by D.Gold. The translucent amber oil produced by charcoal filtering the ether phase of the extraction and isomerizing the cannabidiol present to THC contains, in most cases, between thirty and sixty per cent THC.

How to extract essential oils from petals, leaves and .

How to extract essential oils from petals, leaves and .

Pentane is filled into the flask. The amount should be four to five times the volume that fits into the extractor. Heat the solvent so that it boils and keep it refluxing at the condenser until the extractor has discharged the solution that forms at least three times into the flask.