MXC-8

Application: Flexible Foam, Rigid Foam
Foam: Moulded Flexible Foam, PUR Rigid Foam, Slabstock Flexible Foam

Name	DMCHA
Formula	C₈H₁₇N
CAS No.	98-94-2
Molecular weight	127.23 g/mol
Appearance	Colorless to Light Yellow Liquid

MXC-8 Technical Data Sheet

Flash Point	40℃
Specific Gravity at 25℃	0.87
Water Solubility	Insoluble
Purity	Min. 99.0%
Water Content	Max. 0.5%
Package	170kgs steel drum, or 850kgs net IBC drum
Storage Condition	Keep in a cool dry place
Shelf Life	One Year

MXC-8 Features and Applications

MXC-8, chemically known as N,N-Dimethylcyclohexylamine (DMCHA), is a standard tertiary amine catalyst. It is the “workhorse” catalyst for the rigid foam industry, providing a reliable balance between foaming and hardening.

Chemical structure diagram of N,N-Dimethylcyclohexylamine (DMCHA), MXC-8 polyurethane catalyst — *Molecular structure of MXC-8*

1. Key Characteristics

Balanced Activity: It promotes both the reaction of isocyanate with water (blowing) and with polyols (gelling), making it highly versatile.
Strong Initial Catalysis: It is particularly effective at starting the reaction quickly (initial rise).
Solubility: Soluble in alcohols and ethers, but insoluble in water.
Low-Odor Options: While standard DMCHA has a strong amine smell, low-odor versions (blended with specific agents to prevent evaporation) are available.

2. Primary Applications

MXC-8 is extensively used in Rigid Polyurethane Foams:

Insulation: Refrigerator and freezer insulation foam.
Construction: Spray foam, sandwich panels, and board stock.
Other: Also acts as an auxiliary catalyst for molded soft foams and semi-rigid foams.

3. Global Equivalents

Manufacturer	Brand Name
Air Products (USA)	Polycat 8
Momentive (USA)	Niax C-8
Huntsman (USA)	Jeffcat DMCHA
Ming Xu(China)	MXC-8
Evonik (Germany)	Tegoamin DMCHA