Amines
REACH
Dimethylamine
CAS Number
124-40-3
EC Number
204-697-4
Abbreviation
DMA
Industries: Food & Nutrition
What is Dimethylamine?
Dimethylamine (CAS 124-40-3), commonly abbreviated as DMA, is a secondary amine supplied primarily as an aqueous solution or compressed gas.
Where is Dimethylamine used?
- Food and flavoring: contributes characteristic fishy and fermented notes; monitored as a quality marker in seafood processing
- Synthesis: building block for dimethylformamide (DMF) and dimethylacetamide
- Pharmaceutical and polymer manufacturing: these solvents are critical
- Agrochemicals: precursor to herbicide salts, particularly dimethylamine salts of glyphosate and 2,4-D formulations
- Surfactants, ion exchange resins and rubber accelerators: controlled amine functionality
- It functions as a chemical intermediate and pH modifier across food, agricultural, and industrial manufacturing processes.
Commercial specifications
- Aqueous solutions at 40% and 60%
- Packaging: cylinders and ISO tanks for gas; IBCs and bulk tankers for aqueous solution
Other Names (Synonyms)
N,N-dimethylamine|N-methylmethanamine|Me2NH|HNMe2|dimethylamine anhydrous|2-azapropane|(CH3)2NH|DMA
What are the physical properties of Dimethylamine?
Melting Point -92.2 °C
Boiling Point 6.8 °C
Density 0.6804 g/cm³ @ Temp: 0 °C
Flash Point 60 °F
Appearance colourless gas with strong ammonia-like smell
Color Clear slightly yellow
Odor Ammonical odour
Form Solution
Water Solubility Miscible with water and most organic solvents.
Vapor Pressure 16.97 psi ( 55 °C)
Refractive Index n 20/D 1.37
pH 14 ( in H2O)
Log P -0.274 at 25℃
How is Dimethylamine classified and handled safely? Learn More
Danger
GHS02· Flammable GHS04· Compressed Gas GHS05· Corrosive GHS07· Irritant GHS09· Environmental Hazard GHS08· Health Hazard
Hazard Statements
H220 Extremely flammable gas
H224 Extremely flammable liquid and vapor
H280 Contains gas under pressure; may explode if heated
H302 Harmful if swallowed
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P222 Do not allow contact with air.
P233 Keep container tightly closed.
Which trade and regulatory codes apply to Dimethylamine?
HS Code 29211100
UN Number 2924
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 2