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Acid, base and phase-transfer catalysts

Dabco

Also known as 1,4-Diazabicyclo[2.2.2]octane, Triethylenediamine, 1,4-Diazabicyclo(2.2.2)octane

CAS 280-57-9Formula C6H12N2Molar mass 112.18 g/molEC 205-999-9
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Harmful or irritant 82 suppliers listed
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Dabco chemical structure, C6H12N2, CAS 280-57-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless hygroscopic crystals
Melting point
158 ยฐC
Boiling point
174 ยฐC
Density
1.14 at 28 ยฐC (Water = 1)[NITE, Chemical Risk Information Platform (CHRIP). Biodegradatiโ€ฆ
Solubility
45 g/100 g water at 25 ยฐC
HS code
293359
Category
Acid, base and phase-transfer catalysts
Illustrative photo, colourless crystals in an open fibre drum in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Dabco?

Plain description, key identifiers and synonyms

Triethylenediamine is an organic heterobicylic compound that is piperazine with an ethane-1,2-diyl group forming a bridge between N1 and N4. It is typically used as a catalyst in polymerization reactions. It has a role as an antioxidant, a reagent and a catalyst. It is a diamine, a bridged compound, a saturated organic heterobicyclic parent and a tertiary amino compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,4-diazabicyclo[2.2.2]octane
CAS number
280-57-9 CAS number cross-checkedOther or deprecated CAS: 88935-43-7
EC number
205-999-9
Molecular formula
C6H12N2
UNII
X8M57R0JS5
MDL number
MFCD00006689
InChIKey
IMNIMPAHZVJRPE-UHFFFAOYSA-N
InChI
InChI=1S/C6H12N2/c1-2-8-5-3-7(1)4-6-8/h1-6H2
SMILES (canonical and isomeric)
C1CN2CCN1CC2

Synonyms

  • 1,4-Diazabicyclo[2.2.2]octane
  • Triethylenediamine
  • 1,4-Diazabicyclo(2.2.2)octane
  • Dabco 33LV
  • Dabco crystal
  • 1,4-Ethylenepiperazine
  • TEDA
  • Texacat TD 100
  • Dabco EG
  • N,N'-endo-Ethylenepiperazine
  • 1,4-Diazabicyclo-octane
  • D 33LV
  • Thancat TD 33
  • Dabco S-25
  • Dabco R-8020
  • Triethylene diamine
  • TED
  • 1,4-diazabicyclo[2,2,2]octane
  • 1,4-Diaza[2.2.2]bicyclooctane
  • 1,4-Diazobicyclo(2.2.2)octane
  • 1,4-Diazabicyclo [2.2.2] octane
  • 1,4-diazabicyclo[2.2.2]octane (dabco)
  • 1,4-Diazobicyclo[2.2.2]octane
  • Bicyclo[2.2.2]-1,4-diazaoctane
  • 1,4-Diazabicyclo-[2.2.2]octane
Show all 38 synonyms
  • 1,4-Diazabicyclo-(2,2,2)-octane
  • Bicyclo(2,2,2)-1,4-diazaoctane
  • 1,4-diazabicyclo(2,2,2)octane
  • 1,4-diazobicyclo(2,2,2)octane
  • 1,4-diazobicyclo[2,2,2]octane
  • 1,4-diazabicyclo (2.2.2)octane
  • 1,4-diazabicyclo [2.2.2]octane
  • 1,4-diazabicyclo(2.2.2) octane
  • 1,4-diazabicyclo(2.2.2)-octane
  • 1,4-diazabicyclo[2.2.2] octane
  • 1,4-diazabicyclo[2.2.2]-octane
  • 1,4-diazabicyclo (2.2.2) octane
  • 1,4-diazabicyclo-[2,2,2]-octane

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Colorless hygroscopic crystalsexp.
Melting point
158 ยฐCexp.
Boiling point
174 ยฐCexp.
Density
1.14 at 28 ยฐC (Water = 1)[NITE, Chemical Risk Information Platform (CHRIP). Biodegradation and Bioconcentration. Ver 2006.01.30 Updated. National Institute of Technology and Evaluation. Tokyo, Japan. Thiodiethylene glycolBicycloexp.
Solubility
45 g/100 g water at 25 ยฐCexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
112.18 g/molcalc.
Exact mass
112.10 Dacalc.
LogP (octanol/water)
-0.38calc.
Topological polar surface area
6.48 ร…ยฒcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
0calc.
Heavy atoms
8calc.
Rings
3calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CN2CCN1CC2

C1CN2CCN1CC2

3 rings, 8 atoms. This chemical is the scaffold itself.

152 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H228Flammable solid.
  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
  • H412Harmful to aquatic life with long lasting effects.
Precautionary statements (26)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Dabco suppliers

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All 82 suppliers
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Where suppliers are based

82 suppliers in 16 countries

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Dabco price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Catalyst in making urethane foams.

The only important industrial use of triethylenediamine is as a hardener for polyurethane foams.

Anti-fade reagent that scavenges free-radicals produced by excitation of fluorochromes. Added to the mounting medium in fluorescence microscopy to retard photobleaching of fluorescein and other fluorescent dyes.[Sigma-Aldrich, D2522 Sigma 1,4-Diazabicyclo.

Singlet oxygen trap used as diagnostic for singlet oxygen, trap for radioiodine.

Oxidation and polymerization catalyst, chemical intermediate (metal complexes, quaternary ammonium compounds, etc), bromide and iodine addition compounds.

Industrial uses: Absorbent, Filler, Catalyst, Intermediate.

Consumer uses: Catalyst.

Pharmacological actions

  • Radiation-Protective Agents

Roles

  • antioxidant
  • catalyst
  • reagent

Functional uses

  • Catalyst

How it is made

Krause et al, british patent 871,754 (1958 to houdry process).

Triethylenediamine can be produced from ethylenediamine or ethanolamine, diethanolamine, or diethylenetriamine with a variety of different catalysts.

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Dabco is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Dabco is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Dabco, based on the data on this page

What is Dabco?

Triethylenediamine is an organic heterobicylic compound that is piperazine with an ethane-1,2-diyl group forming a bridge between N1 and N4. It is typically used as a catalyst in polymerization reactions. It has a role as an antioxidant, a reagent and a catalyst.

What is the CAS number of Dabco?

The CAS registry number of Dabco is 280-57-9. Other or deprecated CAS numbers: 88935-43-7.

What is the molecular formula and weight of Dabco?

The molecular formula of Dabco is C6H12N2 and its molar mass is 112.18 g/mol.

What is Dabco used for?

Catalyst in making urethane foams. The only important industrial use of triethylenediamine is as a hardener for polyurethane foams. Anti-fade reagent that scavenges free-radicals produced by excitation of fluorochromes.

Is Dabco hazardous?

Dabco carries the GHS signal word "Danger". Main hazards: flammable solid, harmful if swallowed, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dabco?

Dabco is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ringโ€ฆ). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dabco?

CompoundList lists 82 suppliers of Dabco in China, United States, India, United Kingdom and 12 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Dabco in India?

9 suppliers in India list Dabco on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Dabco?

Suppliers quote Dabco on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Dabco

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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