Chemistry Reference
In-Depth Information
0.252 g KOH
0.426 g CH
3
I
25 g H
2
O
(90 mL)(0.902g/mL)
81.2g ethyl acetate
1 g (assumed) magnesium sulfate
=
Adding these, we get 112.76 g. After subtracting the 0.194 g product, we
see that the waste is 112.57. The E-factor
580. This is a rel-
atively high E-factor and if the synthesis were commercialized, undoubtedly
modifications would be made to reduce waste.
The chemical industry has come a long way in the last five decades. There is
an improved focus on safety, a greater understanding of the effect of chemicals
on the environment, a stronger effort in waste minimization and a commit-
ment to cooperate in areas concerning safety and the environment. Undoubt-
edly, as technology and understanding improves in future decades, we should
see further improvements in safety and lessened environmental impacts.
=
112.57 / 0.194
=
QUESTIONS
1.
Look up a past Presidential Green Chemistry Challenge Award winner.
Give a one paragraph synopsis and list which of the 12 principles of green
chemistry are exemplified.
2.
Look up an experimental procedure in a current journal such as Journal
of Organic Chemistry. Compare the procedure versus the 12 principles
of green chemistry. Which principles are exemplified? Suggest possi-
ble areas of research for further green improvements. Calculate the atom
economy and the E-factor.
3.
Label as True or False: Based upon OSHA, the number of accidents and
illnesses (OSHA reportables) for chemical manufacturing is only slightly
higher (about 10% higher) than the average for all industries.
4.
(Which best belongs in the blank?) In 1988, after Bhopal and
other chemical disasters, the American Chemistry Council launched
_____________ to respond to public concerns about the manufacture
and use of chemicals. As elements of this effort, chemical companies
assist each other to achieve optimum performance and report to the
public.
a.
OSHA
b.
Responsible Care
c.
Good Neighbor
Search WWH ::
Custom Search