User:Klare Lazor/Notebook/Chem-496-001/2013/02/08: Difference between revisions

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*mass of phenol was weighed under fume hood toxic
*mass of phenol was weighed under fume hood toxic
* determined best to use an Erlenmeyer flask instead of beaker for mixing
* determined best to use an Erlenmeyer flask instead of beaker for mixing
'''Quaternary Ammonium Salt Purification'''
# Turn off the heat on the round bottom flask containing the reaction and remove from the heating mantle.
# Fill a beaker with 100 mL ethyl acetate.
# Place on ice.
# Add the product drop-wise
# Filter and collect precipitate
# reaction failed was unable to purify. will discuss on monday as to other way to attach a quaternary ammonium to pva with fox
# reaction failed most likely due to the age of the starting material

Revision as of 14:24, 8 February 2013

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Objective

  1. Remake films with phenol at correct ratios
  2. purify quaternary ammonium and NMR


Data

Calculations for 10% phenol film and 10% phenol stock solution

  • 1.373E22 OH groups in 1 gram of pooh × 0.1= 1.373E21
  • 1.373E21 ÷ 6.022E23 × 94.124 g/mol= 0.214 grams
  • Make film1 with .214grams of phenol 10ml of water and 1 ml of gluataraldehyde and 1 gram of pooh
  • Make a stock solution of 10ml of water and .214 grams of phenol= 21.4 Molar of phenol = 10% reacts with OH groups on PVOH
    • Dilute from this solution to make 1%, 0.1% and 0.01% solution using m1v1=m2v2 equation
    • film 2-1%: 1ml of stock add to film with 10ml water, 1 gram of pva, 1ml of glutaraldehyde
    • film 3-.1%: .1ml of stock add to film with 10ml water, 1 gram of pva, 1 ml of glutaraldehyde
    • film 4-.01%: .01ml of stock add to film with 10 ml water, 1 gram of pva, 1 ml of glutaraldyde
    • Film 5- 7%: 7 ml of stock add to film with 10ml water 1 gram of pva, 1 ml of glutaraldehyde because 10% film failed with 10ml of water it evaporate off to quick
    • film 5- 1%: 1ml of stock add to film with 10ml water 1 gram of pva, 1ml of glutaraldehyde because 1% evaporated off to fast so made another one
  • stirred all contents of film on heat under fume hood to have them dissolve and this poured them into their respective dish
  • mass of phenol was weighed under fume hood toxic
  • determined best to use an Erlenmeyer flask instead of beaker for mixing

Quaternary Ammonium Salt Purification

  1. Turn off the heat on the round bottom flask containing the reaction and remove from the heating mantle.
  2. Fill a beaker with 100 mL ethyl acetate.
  3. Place on ice.
  4. Add the product drop-wise
  5. Filter and collect precipitate
  6. reaction failed was unable to purify. will discuss on monday as to other way to attach a quaternary ammonium to pva with fox
  7. reaction failed most likely due to the age of the starting material
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