Name:
CHML212
Exp. 20 Reduction of p-Vanillin
Tech
Pre
In
Post
Max
10
20
20
50
Score
Total Grade
PRE-LAB ASSIGNMENT: (EACH STUDENT will complete, print, and submit a copy at the beginning of the lab period.
Without a complete pre-lab assignment, you will not be allowed to perform the experiment, and will receive a zero
for the lab.) …..max score = 20 pts.
1. Objective (In the provided space, write a brief purpose of the experiment, addressing all of the following points: )




Name the class of reactants combined during the synthesis and the class of product formed.
What is the purification technique used in this experiment?
What analytical technique will be used during the experiment?
What type of spectral analysis will be used to characterize the reactant and product?
2. Chemical Equation (Draw the chemical equation for the sodium borohydride reduction of p-vanillin using actual chemical structures.)
3. Physical Data (Complete the following table using MSDS sheets from the following link:
http://www.sigmaaldrich.com/united-states.html. Copy all of
the OSHA hazards using the hazard codes provided.)
Compound
p-vanillin
Sodium borohydride
ethanol
Sodium hydroxide
Vanillyl alcohol
Hydrochloric acid
Ethyl acetate
Hexane
2,4-dinitrophenylhydrazine
MW
(g/mol)
bp
(oC)
X
X
X
X
X
X
X
X
X
X
X
X
mp
(oC)
X
X
X
X
X
X
X
d
(g/mL)
OSHA HAZARDS
X
X
X
X
X
X
4. Experimental Outline (In the space provided, give a brief description of the procedure that will be followed in this experiment in 10 lines or less.)
1
2
3
4
5
6
7
8
9
10
5. Pre Lab Question (Answer the following question prior to lab.)
Which of the following techniques will NOT be used in this experiment to analyze the product?
a. HPLC analysis
b. GC analysis
c. TLC analysis
d. melting point analysis