CAS 111-18-2


Tetramethylethylenediamine is a colorless transparent liquid with a slight ammonia odor. Miscible with water, miscible with ethanol and most organic solvents.

Chinese name: Tetramethylethylenediamine, CAS 111-18-2,

English name: N,N,N’,N’-Tetramethylethylenediamine

Don’t call it: Tetramethylethylenediamine

Chinese name


English name


Don’t call


Chemical formula


Molecular weight


melt point


Boiling Point


Secret Degree

0.775g/mL at 20℃

Flash Point


Basic information:

Chemical formula: (CH3)2NCH2CH2N(CH3)2

Molecular weight: 116.21

melting point: -55℃

Boiling point: 121~122℃

Dense density: 0.775g/mL at 20℃

Flash point: 10℃

tetramethyl ethyl Diamine CAS 111-18-2

Tetramethylethylenediamine CAS 111-18-2

Numbering system:

CAS Number: 110-18-9

MDL number: MFCD00008335

EINECS number: 203-744-6

RTECS number: KV7175000

BRN number: 1732991

PubChem number: 24900591

FEMA registration number: 2488

Physical characteristics:

1. Properties: colorless transparent liquid with a slight ammonia smell.

2. Melting point (℃): -55

3. Boiling point (℃): 120~122

4. Relative density (water=1): 0.77 (20℃)

5. Relative vapor density (air=1): 4.0

6. Octanol/water partition coefficient: 0.3

7. Flash point (℃): 10

8. Ignition temperature (℃): 349

9. Upper explosion limit (%): 9.08

10. Lower explosion limit (%): 0.98

11. Solubility: miscible with water, miscible with ethanol and most organic solvents.

Molecular structure data:

1. Molar refractive index: 37.28

2, molar volume (cm3/mol): 142.0

3. Isometric specific volume (90.2K): 322.2

4. Surface tension (dyne/cm): 26.4

5. Polarizability (10-24cm3): 14.78

Nature and stability:

1. Stability and stability

2. Incompatible materials Strong oxidants, strong acids

3. Conditions to avoid contact Heated

4. Aggregation hazard No aggregation

5. Decomposition product amine

Product usage:

Tetramethylethylenediamine is a medium activity foaming catalyst, a foaming/gel balance catalyst, and can be used for heat-molding soft foam and polyurethane Semi-rigid foam and rigid foam promote the formation of the skin and can be used as an auxiliary catalyst for triethylenediamine (A33).

Storage and transportation:

Should be sealed and stored in a dry, cool and ventilated warehouse


200KG/bucket Storage: It is recommended to store in a dry and cool area with proper ventilation. After the original packaging, please fasten the packaging cover as soon as possible to prevent the product performance from being mixed with other substances such as waterproof grade. Store in a cool, dry place, keep the container tightly closed, and avoid contact with oxides. Do not inhale dust and avoid contact with skin and mucous membranes. Smoking, eating and drinking are prohibited in the workplace. After work, take a shower and change clothes. Store contaminated clothes separately and use them after washing. Maintain good hygiene habits.

TMEDA (N,N,N’,N’-Tetramethylethylenediamine)

CAS No.110-18-9

Over view

Common Name: N,N,N’,N’-Tetramethylethylenediamine

Other Chemical Names: N,N,N’,N’-Tetramethylethane-1,2-diamine, electrophoresis grade;Four MethylEthylenediaMine;N,N,N’,N’-TetraMethylethylenediaMine

Molar formular


Molar mass


Physical and chemical properties:

a) Appearance

Form: Transparent colorless liquid

b) Melting point/freezing point

Melting point/range: -55 °C – lit.

c) Initial boiling point and

boiling range

120 – 122 °C – lit.

d) Flash point

20 °C – closed cup

e) Evaporation rate

no data available

f) Flammability (solid, gas)

no data available

g) Upper/lower

flammability or

explosive limits

Upper explosion limit: 9,08 %(V)

Lower explosion limit: 0,98 %(V)

h) Relative density

0,775 g/cm3 at 20 °C

i) Water solubility


j) Partition coefficient:

log Pow: 0,3

Features and uses:

NT CAT TMEDA is a colorless-to-straw, liquid, tertiary amine with a characteristic aminic odor. It is readily soluble in water, ethyl alcohol, and other organic solvent.

It is used as an intermediate in organic synthesis. It is also used as a cross linking catalyst for polyurethane rigid foams.

Storage Information

NEWTOP Chemical recommends that our catalysts be stored in a dry and cool area under appropriate ventilation conditions. Each container should be closed tightly to avoid contamination with moisture or other negative influences that could change the products’ performance in the end use.


160KG Steel Drum

(Toyocat TE/ Kaolizer 11/ Dabco TMEDA)