Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
1. Basic Information
Name: 1,8-Diazabicyclo[5.4.0]undec-7-ene
Abbreviation: DBU
CAS No.: 6674-22-2
Molecular Formula: C9H16N2
Alphabet-number format: C9H16N2
Molecular Weight: 152.24
2. Physical and Chemical Properties
Physical Properties
- Appearance: Colorless to pale yellow transparent oily liquid
- Odor: Strong amine pungent odor
- Solubility: Miscible with water, methanol, ethanol, acetone, dichloromethane, toluene; slightly soluble in aliphatic hydrocarbon solvents
- Boiling Point: 270 °C (760 mmHg)
- Density: 1.019 g/cm3 (20 °C)
- Refractive Index: 1.522–1.524 (20 °C)
- Hygroscopicity: Strongly hygroscopic, absorbs moisture and carbon dioxide in air easily
Chemical Properties
- Molecular Structure: Bicyclic amidine organic compound with two nitrogen atoms inside fused ring structure
- Strong organic alkalinity: High nucleophilic amidine base, widely used as deprotonation reagent in organic synthesis
- Neutralization reaction: Reacts with inorganic acids and organic acids to form stable amidine salts
- Catalytic performance: Efficient catalyst for esterification, transesterification, elimination, cyclization and polyurethane polymerization
- Thermal stability: Stable under normal temperature; slight decomposition over 250 °C
- Photostability: Sensitive to UV light; long-term illumination deepens liquid color
- Compatibility: Compatible with anhydrous aprotic solvents; incompatible with strong oxidants, carboxylic acids, halocarbons, heavy metal salts
3. Main Application Fields
1. Organic Synthetic Catalyst & Base (Core Application)
- Non-nucleophilic strong base reagent for peptide synthesis, API intermediate coupling and cyclization reactions
- Catalyst for polyurethane, epoxy resin, polycarbonate polymerization and curing system
2. Pharmaceutical Intermediate Manufacturing Auxiliary
High-efficiency deprotonation agent for producing anti-hypertensive, anti-infective and anti-tumor drug intermediates
3. Electronic Chemical Raw Material
Curing accelerator for electronic packaging resin, high-purity organic base for wafer cleaning formulation
4. Laboratory Analytical Reagent
Organic alkaline standard reagent for synthetic chemistry research experiments
4. Quality Specification Table
| Test Item | Standard Index |
| CAS Number | 6674-22-2 |
| Molecular Formula | C9H16N2 |
| Appearance | Colorless light yellow oily liquid |
| GC Purity | Synthetic Grade ≥98.0%; Electronic Grade ≥99.0% |
| Water Content (KF) | ≤0.10% |
| Color (APHA) | ≤150 |
| Heavy Metals (Pb) | ≤10 ppm |
| Packaging | 25L / 200L sealed amber steel drum |
| Storage Condition | Hermetic cool dry dark warehouse below 25 °C; isolated from air, acids and oxidants |
| Transportation Requirement | Corrosive organic amine liquid, leak-proof light-resistant sealed packaging |
| Shelf Life | 24 months under nitrogen-filled sealed packaging |
Safety Warning
Corrosive alkaline liquid. Vapor severely irritates eyes, skin and respiratory tract; skin contact causes chemical burns. All operations must be performed in ventilated fume hood with alkali-resistant gloves, full-face goggles and respirator. Avoid contact with acids, halogens and oxidants to prevent violent exothermic reaction. Waste liquid belongs to corrosive nitrogen-containing organic hazardous waste and requires professional neutralization disposal. Must be sealed tightly to avoid absorbing CO? and moisture from air leading to performance decline.
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