- ▸ Bifunctional tertiary-amine catalyst for polyurethane foam and elastomer systems
- ▸ Promotes both blow and gel reactions depending on formulation
- ▸ Used as a co-catalyst to tune reactivity profile
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Request SDS →
Tetramethyl-1,3-propanediamine (TMPDA) is a tertiary diamine catalyst for polyurethane — a blow-leaning general catalyst used to tune the reaction profile in foam and CASE. Identity: CAS 110-95-2.
What it is
TMPDA (CAS 110-95-2) is a liquid permethylated 1,3-diamine. Its two tertiary-amine sites give a useful blow/general catalytic activity.
How it catalyzes
It accelerates the urethane and water-isocyanate reactions, leaning toward blow/general activity; it is used to fine-tune cure and rise in combination with other catalysts.
Applications
TMPDA is used in polyurethane foam and CASE to adjust the catalytic balance, with gelling and blowing co-catalysts. Compare TMHDA.
Forms, grades and handling
TMPDA is supplied as a clear liquid in drums, IBCs and bulk. Properties are typical reference values; the Certificate of Analysis (CoA) for the lot you buy governs. Amine catalysts are typically corrosive and have a strong odor — handle per the current Safety Data Sheet (SDS). Each lot ships with CoA, TDS and SDS.
Bulk supply and RFQ
RawSource sources N,N,N’,N’-Tetramethyl-1,3-propanediamine direct from producers in bulk, with CoA, TDS and SDS per lot. Tell us your system (flexible/rigid foam, CASE), the reaction balance you need (gel vs blow), and any low-emission requirement, and we will quote the right catalyst or blend. See the full range and gel/blow selection logic in the polyurethane catalysts guide.
Typical Properties
Typical reference values, not a specification; the Certificate of Analysis (CoA) for the lot governs.
| Property | Typical Value |
|---|---|
| Chemical / class | Polyurethane catalyst (tertiary diamine) |
| Catalyst action | Blowing / general |
| CAS Number | 110-95-2 |
| Molecular Formula | C7H18N2 |
| Molecular Weight | 130.23 g/mol |
| Handling | Refer to the current SDS |
Regulatory & registration requirements
- TSCA (US):
- REACH (EU):
- EC number: 203-818-8
Source: EPA TSCA Inventory (July 2025 release) · ECHA CHEM — retrieved 2026-07-12
Frequently Asked Questions
What is tetramethyl-1,3-propanediamine (TMPDA) used for?
TMPDA (CAS 110-95-2) is a tertiary diamine catalyst for polyurethane foam and CASE, used to tune the reaction balance (blow/general), in combination with other catalysts.
How is bulk TMPDA supplied and quoted?
RawSource supplies TMPDA in bulk with CoA, TDS and SDS per lot. Pricing is quote-based on grade and volume; submit an RFQ with your PU system and the gel/blow balance you need.
What is the REACH and TSCA regulatory status of N,N,N',N'-Tetramethyl-1,3-propanediamine (TMPDA)?
N,N,N',N'-Tetramethyl-1,3-propanediamine (TMPDA) (CAS 110-95-2) is subject to U.S. TSCA Inventory requirements; supplying it into the EU requires valid REACH registration ((EC) No 1907/2006). RawSource cannot verify a third-party supplier's registrations — buyers should require documented TSCA and REACH compliance for their jurisdiction and volume (EC 203-818-8).