Question

Which of the following is not an example of green chemistry?

• A. Calalytic dehydrogenation of the diethanol amine without using cyanide and formaldehyde
• B. Replacement of CFC's by $C{O}_2$ as blowing agent in the manufacture of polystyrene from sheets
• C. Reacting methylamine and phosgene to produce methyl isocyanate
• D. Replacement of organotins by 'sea-nine' as antifouling compounds in sea marine.

Answer 1

The correct option is C

Reacting methylamine and phosgene to produce methyl isocyanate

Reaction of methylamine $\left(C{H}_{3}N{H}_2\right)$ with phosgene $\left(COC{l}_2\right)$ to produce $C{H}_{3}NC$ (methyl isocyanate) is not an example of green chemistry