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1,8-diazabicyclo[5.4.0]undec-7-ene Cas# 6674-22-2 DBU Featured Image
  • 1,8-diazabicyclo[5.4.0]undec-7-ene Cas# 6674-22-2 DBU
  • 1,8-diazabicyclo[5.4.0]undec-7-ene Cas# 6674-22-2 DBU
  • 1,8-diazabicyclo[5.4.0]undec-7-ene Cas# 6674-22-2 DBU

1,8-diazabicyclo[5.4.0]undec-7-ene Cas# 6674-22-2 DBU

  • MOFAN Grade: MOFAN DBU
  • Competitor Brand: DBU; RC Catalyst 6180,DBU
  • Chemical name: "1,8-diazabicyclo[5.4.0]undec-7-ene"; 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine
  • Cas Number: 6674-22-2
  • Molecular fomula: C9H16N2
  • Molecular weight: 152.237

    • Product Detail

    Product Tags

    Description

    MOFAN DBU a tertiary amine that strongly promotes the urethane (polyol-isocyanate) reaction in semi-flexible microcellular foam, and in coating, adhesive, sealant and elastomer applications. It displays very strong gelation capability, imparts low odor and is used in formulations containing aliphatic isocyanates as they require exceptionally strong catalysts because they are much less active than aromatic isocyanates.

    Application

    MOFAN DBU is  in semi-flexible microcellular foam, and in coating, adhesive, sealant and elastomer applications

    MOFAN DBU3
    MOFAN DMAEE03
    MOFAN DMDEE4

    Typical Properties

    Appearance Colorless clear liquid
    Flash Point (TCC)   111°C
    Specific Gravity (Water = 1) 1.019
    Boiling Point 259.8°C 

    Commercial specification

    Apperance,25℃ Colorless liqiud
    Content % 98.00min
    Water content % 0.50 max

    Package

    25kg or 200 kg / drum or according to customer needs.

    Hazard statements

    H301: Toxic if swallowed.

    H314: Causes severe skin burns and eye damage.

    Label elements

    2
    3

     Pictograms

    Signal word Danger
    UN number 2922
    Class 8+6.1
    Proper shipping name and description CORROSIVE LIQUID, TOXIC, N.O.S. (1,8-Diazabicyclo[5.4.0]undec-7-ene)

    Handling and storage

    Precautions for safe handling
    Ensure thorough ventilation of stores and work areas. Handle in accordance with good industrial hygiene and safety practice. When using do not eat, drink or smoke. Hands and/or face should be washed before breaks and at the end of the shift.

    Protection against fire and explosion
    Prevent electrostatic charge - sources of ignition should be kept well clear - fire extinguishers should be kept handy.

    Conditions for safe storage, including any incompatibilities
    Segregate from acids and acid forming substances.
    Further information on storage conditions: Keep container tightly closed in a cool, well-ventilated place.  

    FAQ

    I need a very strong base catalyst for CO2 fixation into cyclic carbonates. Is DBU suitable?

    Yes, DBU is one of the strongest non-nucleophilic bases, ideal for activating CO2 and epoxides.

    My polyurethane elastomer has poor hydrolytic stability. Can DBU help?

    No, DBU would promote hydrolysis; use a tin or zinc catalyst instead.

    How can DBU be used as a trimerization catalyst for high-performance PIR foam?

    Add 0.3–0.8 phr DBU together with a potassium catalyst to achieve very high isocyanurate content (>30%).

    Is DBU soluble in common polyether polyols?

    Yes, it is miscible with most polyols and does not require special handling.

    My epoxy-amine system has too long a cure time at ambient temperature. Can DBU accelerate it?

    Yes, DBU is a strong accelerator; use 0.1–0.5 phr to drastically reduce pot life and cure time.

    Does DBU cause discoloration in clear polyurethanes?

    It can cause yellowing over time due to its strong basicity; avoid for optically clear applications.

    Can DBU be used to catalyze the reaction of isocyanate with alcohols in low-temperature environments?

    Yes, it remains active even below 0°C, making it useful for winter-grade PU systems.

    What is the typical use level of DBU in a polyurethane casting system for large parts?

    0.05–0.15 phr to avoid excessive exotherm; always combine with a gel catalyst for balance.

    My customer requires a catalyst that does not contain any tin or mercury. Is DBU a good alternative?

    Yes, DBU is a metal-free strong base catalyst, suitable for medical and food-contact applications after proper extraction.

    How should I handle DBU to avoid skin irritation?

    Use gloves and goggles; DBU is corrosive. Neutralize spills with dilute acetic acid.

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