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  4. Main product obtained from the reaction of ammonia and formaldehyde is

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Q. Main product obtained from the reaction of ammonia and formaldehyde is

UPSEEUPSEE 2009

Solution:

When ammonia $\left( NH _{3}\right)$ reacts with formaldehyde $(HCHO)$, hexamethylenetetramine which is also known as urotropine, is formed. Urotropine is used as a medicine to treat urinary infections.

$\underset{\text{formaldehyde}}{6 HCHO} +\underset{\text{ammonia}}{4 NH _{3}} \longrightarrow \underset{\text{urotropine}}{( CH _{2})_{6} N _{4}}+6 H _{2} O$

Structure of urotropine is as

image