METHYL SALICYLATE (PRELIM)

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28 Terms

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Heat

Is used to speed up the reaction (since organic chemistry tend to have slow reactions)

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Reflux Condenser

Is connected to a water source (cool down vapors) to provide an environment of lower temperature so when the chemical is boiled it will not evaporate and return to its original liquid state.

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Salicylic Acid
Methanol

SYNTHESIS OF METHYL SALICYLATE
Two Chemicals That Reacted:

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Salicylic Acid
Methanol
Sulfuric Acid

Chemical involved during the synthesis of Methyl Salicylate:

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Sulfuric Acid

SYNTHESIS OF METHYL SALICYLATE
Is only used as catalyst and provides an ideal (acidic) environment for the reaction to occur.

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Methyl Salicylate
Water

Salicylic acid reacted with methanol under an acidic environment to form?

<p><span>Salicylic acid reacted with methanol under an acidic environment to form?</span></p>
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Sodium Bicarbonate

What is added to the round bottom flask with methyl salicylate and water that is poured into the beaker?

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React with Unreacted Salicylic Acid

What is the purpose of the addition of NaHCO3 into the solution (methyl salicylate and water)?

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Sodium Salicylate

NaHCO3 will react with the unreacted salicylic acid and turns into?

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Salicylic Acid

Sodium salicylate is the ionized (water soluble) form of?

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Methyl Salicylate
Sodium Salicylate

In the beaker we only have two major compounds :

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To isolate methyl salicylate because it is unionized (water- insoluble).

Why do we need to make the solution water soluble?

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Hexane

In our separatory funnel we have a solvent in the form of? (non-polar/ water-insoluble)

<p><span>In our separatory funnel we have a solvent in the form of? (non-polar/ water-insoluble)</span></p>
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True

TRUE OR FALSE
Salicylic acid is soluble in hexane.

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False

TRUE OR FALSE
Methyl salicylate is not soluble in hexane.

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Dry Powder

Solid Form of Methyl Salicylate

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Yellowish or Reddish Liquid

Liquid Form of Methyl Salicylate

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Wintergreen (Effervescent)

What is the odor of Methyl Salicylate?

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C8H8O3

Molecular Formula of Methyl Salicylate

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152.15 g/mol

Molecular Weight of Methyl Salicylate

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220-224 °C

Boiling Point of Methyl Salicylate

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1.18

Specific Gravity of Methyl Salicylate

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Ferric Chloride Test

It is the test for phenolic compounds.

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Violet Coloration

Positive Result:

<p>Positive Result:</p>
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Orange/ Yellowish

Negative Result:

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Gaultheria procumbens

Methyl Salicylate is the Active Constituent of?

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Counterirritant 
Rubefacient

Uses of Methyl Salicylate (In Liniments)

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Manipulate the pH of Urine (Sodium Bicarbonate)

Ingestion in large amounts will lead to salicylate poisoning.
Management: