Amines REACH

Trimethylamine hydrochloride

CAS Number
593-81-7
EC Number
209-810-0

What is Trimethylamine hydrochloride?

Trimethylamine hydrochloride (CAS 593-81-7), also known as trimethylammonium chloride, is the stable salt form of trimethylamine used as a surface-active and wetting agent.

Where is Trimethylamine hydrochloride used?

  • Textile processing: surface modifier improving dye uptake and fiber wetting during dyeing and finishing
  • Leather: tanning and pre-treatment baths for controlled surface interaction with hides
  • Paper and packaging: surface sizing and coating formulations requiring uniform wetting of fibrous substrates
  • Printing: wetting component in ink formulations and surface treatment processes
  • It is critical where consistent pigment dispersion and substrate adhesion are required.

Good to know: Its salt form offers handling and storage advantages over the free amine, making it the preferred sourcing form for industrial formulators.

Commercial specifications

  • Technical grade, purity typically 98% and above
  • Bulk supply standard; smaller packaging for formulators and laboratory-scale procurement

Other Names (Synonyms)

Me3N.HCl|(CH3)3N.HCl|Trimethylammonium chloride|trimethylamine monohydrochloride|N,N-dimethylmethanaminium chloride|N,N-dimethylmethanamine;hydrochloride|Methanamine, N,N-dimethyl-, hydrochloride (1:1)

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What are the physical properties of Trimethylamine hydrochloride?

Melting Point 277.5 °C
Boiling Point <200 °C
Density 0.9337 (rough estimate)
Appearance white to slightly cream crystalline powder
Color White to slightly cream
Form Crystalline Powder
Water Solubility SOLUBLE
Vapor Pressure 0Pa at 25℃
Refractive Index 1.4413 (estimate)
pH 5 (100g/l, H2O, 20℃)
Log P -2.25 at 25℃

How is Trimethylamine hydrochloride classified and handled safely? Learn More

Warning
GHS07· Irritant

Hazard Statements

H315 Causes skin irritation
H319 Causes serious eye irritation
H320 Causes eye irritation
H332 Harmful if inhaled
H335 May cause respiratory irritation

Precautionary Statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.
P280 Wear protective gloves/protective clothing/eye protection/face protection.

Which trade and regulatory codes apply to Trimethylamine hydrochloride?

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