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Description and features

AminCat DBU ( 1,8-Diazabicyclo(5.4.0)undec-7-ene ) is a clear, light yellow liquid of relatively low volatility which has C9H16N2 as chemical formula. It has only a slight ammonia-like odour, is miscible with water and is soluble in most organic solvents.

(1,8-Diazabicyclo(5.4.0)undec-7-ene) is also known as 2H,3H,4H,6H,7H,8H,9H,10H-pyrimido[1,2-a]azepine.


Europe and United States: AminCat DBU is ➔ on stock in our local warehouses. Our lead time is about one week if delivered in 200 KG steel drums.

Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

This substance (CAS: 6674-22-2) has been registered (FULL) under REACH (EC) 1907/2006.

Product Identification

CAS number6674-22-2
EC number229-713-7
HS code2933 59 95


Appearance Clear, light yellow liquid
Assay≥99.00 %
Water≤0.25 %


AminCat DBU catalyst is used mainly for specialised applications requiring very strong catalysis. These applications include formulations containing alicyclic or aliphatic isocyanates, which are much less active than aromatic isocyanates and require exceptionally strong catalysts. The product is recommended for evaluation in integral skin semi-flexible foams and microcellular systems.


Available packaging: 200 KG steel drums.
Special packaging is available on request.


Store 1,8-Diazabicyclo[5.4.0]undec-7-enein cool, dry and well-ventilated area and in line with legal requirements.
Keep AminCat DBU away from heat sources and oxidizing agents.


A Material Safety Data Sheets (MSDS) is available for AminCat DBU and all other products supplied by Vesta Chemicals BV.

An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Molecular and structural information

Molecular formula
Molecular weight
152.24 g/mol
Smiles notation
InChi key
Structural formula 6674-22-2, DBU

Physicochemical information

Boiling point261.86 ºC @ 1.013.25 hPa
Bulk density 1.019 kg/m3 @ 20 ºC
Flash point 113 ºC
Melting point No mp between -100 ºC and 30 ºC
Log Pow -6.25 @ 25 ºC (pH 4)
Solubility in water 1.000 g/l (20 ºC)
Vapor pressure ln(p/hPa) = 17.6347 – 5103.75/(216.54 + t/°C)

1,8-Diazabicyclo(5.4.0)undec-7-ene | CAS: 6674-22-2 |  Disclaimer. This information is supplied solely for informational purposes and Vesta Chemicals bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.