Methylammonium chloride

Structural formula
General
Surname	Methylammonium chloride
other names	Methylamine hydrochloride
Molecular formula	CH 6 ClN
Brief description	white solid with an ammonia-like odor
External identifiers / databases
CAS number 593-51-1 EC number 209-795-0 ECHA InfoCard 100.008.906 PubChem 6364545 Wikidata Q27126640
properties
Molar mass	67.52 g mol −1
Physical state	firmly
Melting point	228-233 ° C
boiling point	225–230 ° C (20 hPa)
solubility	very light in water (1080 g l −1 at 20 ° C)
safety instructions
GHS labeling of hazardous substances Caution H and P phrases H: 302-315-319-335 P: 261-305 + 351 + 338
Toxicological data	1600 mg kg −1 ( LD 50 ,  rat ,  oral )
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Methylammonium chloride (also: methylamine hydrochloride) is an organic chemical compound from the group of organic hydrochlorides . It is a salt of the amine methylamine, which is gaseous at room temperature, and is much easier to handle and transport than the hazardous gaseous substance.

Extraction and presentation

If methylamine is neutralized with hydrochloric acid and the water is evaporated, the residue obtained is the salt methylammonium chloride, the hydrochloride of methylamine.

${\displaystyle {\ce {H3C-NH2 + HCl -> H3C-NH3Cl}}}$

properties

Methylammonium chloride is a flammable, hardly inflammable, hygroscopic , crystalline, white solid with an ammonia- like odor, which is very easily soluble in water. It decomposes when heated.

use

In an alkaline solution, methylamine is formed directly from methylammonium chloride.

${\displaystyle \mathrm {CH_{3}NH_{3}Cl+NaOH\longrightarrow CH_{3}NH_{2}+NaCl+H_{2}O} }$

Individual evidence

1. ↑ ^{a b c d e f g} Entry on methylammonium chloride in the GESTIS substance database of the IFA , accessed on April 27, 2018(JavaScript required) .
2. ↑ ^{a b} Data sheet methylammonium chloride (PDF) from Merck , accessed on April 27, 2018.
3. ↑ Entry on Methylamine hydrochloride at ChemicalBook , accessed on May 4, 2018.
4. ^ Sabine Cécile Zeeck, Stephanie Grond, Ina Papastavrou: Chemistry for medical professionals . Elsevier Health Sciences, 2017, ISBN 978-3-437-18015-6 , pp. 257 ( limited preview in Google Book search).