• Methylamine Hydrochloride

Methylamine Hydrochloride
English Name ： Methylamine Hydrochloride
English Synonyms ： Methylammonium chloride; Methylamine HCl; Methanaminium chloride; Monomethylamine hydrochloride
CAS Number ： 593-51-1
EINECS Number ： 209-795-0
Molecular Formula ：CH₅N·HCl (Corrected from CH₆ClN) **
Molecular Weight ：67.52 g/mol (Calculated: 67.52 g/mol) **
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English NameMethylamine Hydrochloride
English SynonymsMethylammonium chloride; Methylamine HCl; Methanaminium chloride; Monomethylamine hydrochloride
CAS Number593-51-1
EINECS Number209-795-0
Molecular FormulaCH₅N·HCl (Corrected from CH₆ClN) **
Molecular Weight67.52 g/mol (Calculated: 67.52 g/mol) **
InChIInChI=1S/CH₅N.ClH/c1-2;/h2H₂,1H3;1H
Molecular Structure

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Melting Point228-233°C (decomposition)
Boiling PointSublimes/Decomposes (38.2°C refers to methylamine gas) **
Water SolubilitySoluble (108 g/100mL at 20°C)
Vapor PressureNegligible (Solid) • Methylamine gas: 3,970 mmHg at 25°C **
Physicochemical Properties• Appearance: White crystalline solid
• Hygroscopic: Absorbs moisture from air
• Odor: Ammoniacal (when moist)
ApplicationsAnalytical reagent • Organic synthesis (pharmaceutical intermediates)
Hazard Symbol

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Xn: Harmful
Risk PhrasesR22: Harmful if swallowed
R36/37/38: Irritating to eyes, respiratory system and skin
Safety PhrasesS26: In case of eye contact, rinse immediately
S37/39: Wear suitable gloves and eye/face protection
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