CAS 280-57-9 DABCO 1,4-Diazabicyclo(2.2.2)octane Catalyst For PU Triethylenediamine TEDA CAS NO.280-57-9

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CAS 280-57-9 DABCO 1,4-Diazabicyclo(2.2.2)octane Catalyst For PU Triethylenediamine TEDA

 

Product Description

DABCO (1,4-Diazabicyclo[2.2.2]octane) - Description

DABCO, also known as triethylenediamine, is a bicyclic organic compound with the chemical formula C6H12N2. It is a strong, non-nucleophilic tertiary amine frequently used as a catalyst in polyurethane production, organic synthesis, and other industrial applications. DABCO is known for its high basicity, low toxicity, and excellent catalytic performance, making it a preferred choice in many chemical processes.

Technical Data

Parameter	Value	Description
Chemical Name	1,4-Diazabicyclo[2.2.2]octane	Also called triethylenediamine (TEDA)
CAS Number	280-57-9	Unique identifier for DABCO
Chemical Formula	C6H12N2	Molecular structure
Molecular Weight	112.18 g/mol	Molecular mass
Physical State	White crystalline solid or liquid	Solid under standard conditions or liquid
Melting Point	155–158°C	Crystalline solid at room temperature
Boiling Point	~174°C (sublimes)	Sublimes without decomposition
Density	~1.16 g/cm³	At 25°C
pKa (in water)	~8.8	Moderate basicity
Solubility	Soluble in water, ethanol, and polar organic solvents	Broad solubility
Refractive Index	~1.48 (solution)	Optical property
Odor	Ammonia-like	Characteristic odor of amines
Appearance	White crystalline powder	Free of impurities

Features

1. High Basicity:

   • Acts as a strong base with low nucleophilicity, ideal for catalytic applications.

2. Thermal Stability:

   • High stability under elevated temperatures, making it suitable for high-temperature reactions.

3. Broad Solubility:

   • Soluble in water and polar organic solvents, enabling use in various chemical environments.

4. Catalytic Efficiency:

   • Provides excellent catalytic activity, particularly in polyurethane foam production and cyclization reactions.

5. Non-Corrosive:

   • Safer for equipment compared to corrosive inorganic bases.

6. Crystalline Form:

   • Easy to handle, measure, and store compared to liquid catalysts.

Applications

1. Polyurethane Industry

• DABCO is a widely used catalyst in the production of:
  • Rigid polyurethane foams: Used in insulation materials.
  • Flexible polyurethane foams: Used in mattresses and cushions.
  • Elastomers: For industrial and consumer applications.
• Promotes the reaction between isocyanates and polyols, as well as the water-isocyanate reaction that produces carbon dioxide for foam expansion.

2. Organic Synthesis

• Used as a non-nucleophilic base and catalyst in:
  • Cyclization reactions: Formation of cyclic compounds.
  • Michael additions: Base-catalyzed nucleophilic additions.
  • Acylation and alkylation reactions: Improves yield and selectivity.

3. Polymer Chemistry

• Catalyst for the polymerization of epoxides, polyesters, and other specialty polymers.

4. Pharmaceuticals

• Serves as a catalyst or reagent in the synthesis of active pharmaceutical ingredients (APIs), especially in heterocyclic chemistry.

5. Agrochemical Industry

• Used in the production of herbicides, pesticides, and fungicides.

6. Fine Chemicals

• Catalyst in the synthesis of dyes, pigments, and specialty chemicals.

Advantages

• Eco-Friendly: Lower environmental impact compared to heavy metal-based catalysts.
• Versatile: Applicable in a wide range of industries, including construction, automotive, and healthcare.
• Efficient: Offers high catalytic activity, reducing reaction times and improving yields.
• Safe to Handle: Relatively low toxicity compared to other industrial catalysts.

Comparison with Other Catalysts

Property	DABCO	DBU (1,8-Diazabicyclo[5.4.0]undec-7-ene)	Tertiary Amines (e.g., TEA)
Basicity (pKa)	~8.8	~12	~10.7
Nucleophilicity	Low	Low	Moderate
Thermal Stability	High	High	Moderate
Application	Polyurethane, Synthesis	Organic synthesis, Polyurethane	Neutralization, Catalysis
Toxicity	Low	Low	Low to Moderate

Packaging	1kg-15kg packing	2 PE bag inside + 1 foil bag outside in carton
	25kg-50kg packing	2 PE bag inside + 1 foil bag outside in drum
	Other packing	Customized packing
Drum Size	D38cm*H60cm or customized, 25 kg/ drum
Shipping	1-50kg	International Express	Fast and convenient	Door to Door
	50-500kg	Air Transportation	Fast and cheap	To Air Port
	Above 500kg	Sea Transportation	Cheap and convenient	To Port

 

 

 

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