![]() Structural formula of octamethylenediamine
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Names | |
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IUPAC name
Octane-1,8-diamine
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Other names
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Identifiers | |
3D model (
JSmol)
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Abbreviations | OMDA |
3-04-00-00612 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.006.150 |
EC Number |
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PubChem
CID
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RTECS number |
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UNII | |
CompTox Dashboard (
EPA)
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Properties | |
C8H20N2 | |
Molar mass | 144.26 g mol−1 |
Appearance | colorless solid with an amine-like odor [1] |
Density | 0.83 g cm−3 (60 °C) [1] |
Melting point | 52 °C [3] |
Boiling point | 225-226 °C [1] [2] |
Easily soluble in water (575 g l−1 at 20°C) [1] | |
Vapor pressure | |
Hazards | |
GHS labelling: [1] | |
![]() ![]() | |
Danger | |
H302, H314, H317 | |
P260, P280, P301+P312+P330, P303+P361+P353, P305+P351+P338+P310 | |
Flash point | 113 °C |
Safety data sheet (SDS) | "1,8-Diaminooctane". GESTIS-Stoffdatenbank. Retrieved 2022-08-05. |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Octamethylenediamine (OMDA) is an organic chemical compound from the substance group of aliphatic diamines. It is used as a versatile reaction intermediate in the manufacture of pesticides, especially fungicides.
The industrial production of octamethylene diamine is carried out by the catalytic hydrogenation of suberonitrile at temperatures of 150 to 180 °C and a pressure of 50 to 180 bar in the presence of ammonia over heterogeneous cobalt unsupported catalysts:
The reaction is carried out in the liquid phase and is carried out continuously or batchwise. The catalyst is arranged as a fixed bed in a shaft, tube, or tube bundle reactor.
Octamethylenediamine is a combustible but difficult to ignite. It is a solid that is easily soluble in water. The aqueous solutions are strongly alkaline ( pH value of 12.1 at a concentration of 10 g/L). [4]
Octamethylenediamine is used as a versatile intermediate in manufacturing pesticides, especially fungicides. [5]
While octamethylenediamine is combustible, it is difficult to ignite because it is solid at moderate temperatures. It has a lower explosive limit (LEL) of 1.1 % by volume and an upper explosive limit (UEL) of 6.8 % by volume. The ignition temperature is 280 °C The substance therefore falls into temperature class T3. With a flash point of 113 °C, the liquid is considered difficult to ignite. [4]
![]() Structural formula of octamethylenediamine
| |
Names | |
---|---|
IUPAC name
Octane-1,8-diamine
| |
Other names
| |
Identifiers | |
3D model (
JSmol)
|
|
Abbreviations | OMDA |
3-04-00-00612 | |
ChEBI | |
ChEMBL | |
ChemSpider | |
DrugBank | |
ECHA InfoCard | 100.006.150 |
EC Number |
|
PubChem
CID
|
|
RTECS number |
|
UNII | |
CompTox Dashboard (
EPA)
|
|
| |
| |
Properties | |
C8H20N2 | |
Molar mass | 144.26 g mol−1 |
Appearance | colorless solid with an amine-like odor [1] |
Density | 0.83 g cm−3 (60 °C) [1] |
Melting point | 52 °C [3] |
Boiling point | 225-226 °C [1] [2] |
Easily soluble in water (575 g l−1 at 20°C) [1] | |
Vapor pressure | |
Hazards | |
GHS labelling: [1] | |
![]() ![]() | |
Danger | |
H302, H314, H317 | |
P260, P280, P301+P312+P330, P303+P361+P353, P305+P351+P338+P310 | |
Flash point | 113 °C |
Safety data sheet (SDS) | "1,8-Diaminooctane". GESTIS-Stoffdatenbank. Retrieved 2022-08-05. |
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
|
Octamethylenediamine (OMDA) is an organic chemical compound from the substance group of aliphatic diamines. It is used as a versatile reaction intermediate in the manufacture of pesticides, especially fungicides.
The industrial production of octamethylene diamine is carried out by the catalytic hydrogenation of suberonitrile at temperatures of 150 to 180 °C and a pressure of 50 to 180 bar in the presence of ammonia over heterogeneous cobalt unsupported catalysts:
The reaction is carried out in the liquid phase and is carried out continuously or batchwise. The catalyst is arranged as a fixed bed in a shaft, tube, or tube bundle reactor.
Octamethylenediamine is a combustible but difficult to ignite. It is a solid that is easily soluble in water. The aqueous solutions are strongly alkaline ( pH value of 12.1 at a concentration of 10 g/L). [4]
Octamethylenediamine is used as a versatile intermediate in manufacturing pesticides, especially fungicides. [5]
While octamethylenediamine is combustible, it is difficult to ignite because it is solid at moderate temperatures. It has a lower explosive limit (LEL) of 1.1 % by volume and an upper explosive limit (UEL) of 6.8 % by volume. The ignition temperature is 280 °C The substance therefore falls into temperature class T3. With a flash point of 113 °C, the liquid is considered difficult to ignite. [4]