Amines REACH

Methylamine hydrochloride

CAS Number
593-51-1
EC Number
209-795-0

What is Methylamine hydrochloride?

Methylamine hydrochloride (CAS 593-51-1), also sold as monomethylamine hydrochloride, is the stable, solid salt form of methylamine used where the free base gas would be impractical to handle.

Where is Methylamine hydrochloride used?

  • Pharmaceutical manufacturing: key building block in the synthesis of active pharmaceutical ingredients, including antivirals, analgesics and CNS compounds
  • Agrochemicals: manufacture of herbicides and pesticides
  • Biotechnology and life sciences: buffer preparation and reagent in biochemical assays
  • Research laboratories: reference standard and synthetic intermediate in small-scale organic synthesis
  • It serves as a controlled source of methylamine in synthesis and research, releasing the reactive amine under controlled conditions.

Good to know: Technical and pharmaceutical-grade specifications meet the purity requirements of industrial synthesis and regulated drug manufacturing, with compliance to USP and BP standards.

Commercial specifications

  • USP and BP standards
  • Packaging from laboratory-scale quantities to bulk industrial supply
  • Documentation supports GMP procurement workflows and other regulatory requirements for global distribution

Other Names (Synonyms)

N-Methylammonium chloride|Monomethylammonium chloride|Monomethylamine hydrochloride|Methanamine, hydrochloride (1:1)|Methylammonium chloride|M439EX322K|RefChem:818507

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What are the physical properties of Methylamine hydrochloride?

Melting Point 227.5 °C
Boiling Point 227 °C
Density 0.8306 (rough estimate)
Flash Point 225-230°C/15mm
Appearance white to light tan solid
Color White crystalline
Odor Odorless
Form powder
Water Solubility soluble
Vapor Pressure 0.134Pa at 25℃
Refractive Index 1.5500 (estimate)
pH 5-7 (10g/l, H2O, 20℃)
Log P -3.82

How is Methylamine hydrochloride classified and handled safely? Learn More

Warning
GHS07· Irritant

Hazard Statements

H302 Harmful if swallowed
H315 Causes skin irritation
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P270 Do not eat, drink or smoke when using this product.
P271 Use only outdoors or in a well-ventilated area.

Which trade and regulatory codes apply to Methylamine hydrochloride?

HS Code 29211190
Storage Class 11 - Combustible Solids
WGK (Germany) 1
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