... relatively low volatility. JD DBU catalyst (1, 8 Diazabicyclo (5, 4, 0) undecene-7) is a clear, light yellowliquid of relatively low ... , light yellow liquid2) Sales specification: 99% min.3) Water content: 0.25% max.4) Flash point: 96°C5) Specific gravity at ... : 1.076) Water solubility: solublePacking:180kg/drum 1, 8-Diazabicyclo (5.4.0) Undec-7-Ene