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NH4Br

NH4Br, ammonium bromide, is an inorganic salt consisting of ammonium cations NH4+ and bromide anions Br-. It forms white crystalline solids and is highly soluble in water, yielding colorless solutions.

It can be prepared by reacting ammonia with hydrobromic acid: NH3 + HBr -> NH4Br, or by neutralizing

In solution, NH4Br dissociates into NH4+ and Br-. The ammonium ion is a weak acid; thus aqueous

Uses and history: It is used as a source of bromide ion in chemical synthesis and qualitative

Safety: Ammonium bromide can irritate skin, eyes, and the respiratory tract. Handle with gloves and eye protection;

hydrobromic
acid
with
ammonium
hydroxide.
It
also
occurs
as
a
by-product
in
certain
bromination
reactions.
NH4Br
forms
slightly
acidic
solutions.
On
strong
heating,
ammonium
bromide
decomposes
to
ammonia
and
hydrobromic
acid:
NH4Br
->
NH3
+
HBr.
analysis.
Historically,
ammonium
bromide
was
used
as
a
sedative
in
medicine,
but
such
use
is
now
obsolete.
avoid
inhalation
of
dust.
Store
in
a
cool,
dry
place
away
from
oxidizers
and
dispose
of
according
to
local
regulations.