Amines
REACH
Dimethyldicyane
CAS Number
6864-37-5
EC Number
229-962-1
Abbreviation
DMDC
What is Dimethyldicyane?
Dimethyldicyane (CAS 6864-37-5), commercially known as DMDC, is an aliphatic diamine used as a curing agent and cross-linking component in polymer systems.
Where is Dimethyldicyane used?
- Epoxy coatings: curative for exterior architectural and industrial maintenance finishes
- Adhesives and sealants: flexible, durable bonds in structural assemblies
- Polyurea and polyurethane elastomers: reaction-rate control and improved mechanical profile of cast or sprayed components
- Construction: flooring systems and protective coatings
- Its cycloaliphatic structure delivers cured materials with strong UV stability and optical clarity.
Good to know: Color and gloss retention are critical in coating and adhesive applications. Construction applications require long pot life and low yellowing under UV exposure.
Commercial specifications
- Standard packaging formats
- Purity confirmed by amine value and GC analysis
Other Names (Synonyms)
4-[(4-amino-3-methylcyclohexyl)methyl]-2-methylcyclohexan-1-amine|Bis(4-amino-3-methylcyclohexyl)methane|DMDC
What are the physical properties of Dimethyldicyane?
Melting Point -7 °C
Boiling Point 342 °C
Density 0.95 g/cm³
Flash Point >230 °F
Color Colorless to Light yellow to Light orange
Form clear liquid
Water Solubility 2.01g/L at 20℃
Vapor Pressure 0.08Pa at 20℃
Refractive Index n 20/D 1.499(lit.)
pH 11 (3.6g/l, H2O, 20℃)
Log P 2.3 at 23℃
How is Dimethyldicyane classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS09· Environmental Hazard GHS07· Irritant GHS08· Health Hazard
Hazard Statements
H302 Harmful if swallowed
H311 Toxic in contact with skin
H314 Causes severe skin burns and eye damage
H318 Causes serious eye damage
Precautionary Statements
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P262 Do not get in eyes, on skin, or on clothing.
P264 Wash … thoroughly after handling.
Which trade and regulatory codes apply to Dimethyldicyane?
HS Code 29213000
UN Number 2927
ADR Class 6.1
Packing Group II
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
WGK (Germany) 3