Dimethylamine
C2H7N, 45.085 g/mol. Its structure, the values that were measured, the values that were calculated, and where each one came from.
Identifiers
- Molecular formula
- C₂H₇N
- Molecular weight
- 45.085 g/mol
- Exact mass
- 45.057849 g/mol
- CNC
- InChI=1S/C2H7N/c1-3-2/h3H,1-2H3
- ROSDSFDQCJNGOL-UHFFFAOYSA-N
Measured properties
Values somebody obtained from a sample and published. Where two sources report the same property they are both shown, in the units each used — a disagreement between them is information, and averaging it away would be inventing a number neither one gave.
- Boiling Point
- 45.3 °F at 760 mmHg (NTP, 1992)
- 7.3 °C
- 7.0 °C
- 51 °C
- 44 °F
- 6.88 °C @760 [mm Hg]
- 44 °F
- Melting Point
- -135 °F (NTP, 1992)
- -93 °C
- Deliquescent leaflets; mp: 171 °C; very soluble in water; soluble in alcohol, chloroform; practically insoluble in ether /Dimethylamine hydrochloride/
- -92.2 °C
- -92.2 °C
- -37 °C
- -134 °F
- -92.18 °C
- -134 °F
- Flash Point
- 20 °F (USCG, 1999)
- The Guide from the Emergency Response Guidebook is for anhydrous dimethylamine. 20 °F
- -6.69 °C (19.96 °F) - closed cup
- 20 °F (Closed cup)
- -18 °C c.c.
- 20 °F (liquid)
- NA (Gas) 20 °F (Liquid)
- Solubility
- 24 % at 140 °F (NIOSH, 2024)
- In water, 163 g/100g water at 40 °C
- Very soluble in water forming a very strong alkaline solution
- Soluble in ethanol, ethyl ether
- Solubilities in various solvents at 1 atm and 20 °C.[Table#2482]
- 1630 mg/mL at 40 °C
- Solubility in water, g/100ml: 354 (very soluble)
- Solubility in water: very soluble
- (140 °F): 24%
- Density
- 0.671 at 44.4 °F (USCG, 1999) - Less dense than water; will float
- 0.6804 g/cu cm at 0 °C
- Bulk density approximately 7.8 lb/gal
- Saturated liquid density: 42.110 lb/cu ft; liquid heat capacity: 0.731 Btu/lb-F (all at 40 °F)
- Saturated vapor pressure: 29.990 lb/sq in; saturated vapor density: 0.23550 lb/cu ft; ideal gas heat capacity: 0.364 Btu/lb-F (all at 75 °F)
- Relative density (water = 1): 0.7
- Relative density (water = 1): 0.9
- 0.67 (liquid at 44 °F)
- 0.6804 @ 0°C
- 0.67 (Liquid at 44 °F)
- 1.56(relative gas density)
- Vapor Pressure
- 1388.03 mmHg at 70 °F (USCG, 1999)
- 1520 mm Hg at 25 °C
- Vapor pressure, kPa at 25 °C: 203
- Vapor pressure, kPa at 20 °C: 26.3
- 1.7 atm
- 750 [mm Hg] @6.6 °C
- 1.7 atm
- LogP
- log Kow = -0.38
- -0.38
- -0.2
- -0.38
- Viscosity
- 1.7 mPa.s at 15.5 °C /40% Dimethylamine aqueous solution/
- 1.7 mPa*s at 20 °C
- Refractive Index
- Index of refraction: 1.350 at 17 °C/D
Calculated properties
Derived from the structure rather than from a sample. These are reproducible and they are not measurements: a calculated partition coefficient and a measured one can differ by a long way, and where both exist they are listed apart on purpose.
- logP
- -0.1644
- Topological polar surface area
- 12.03 Ų
- H-bond donors
- 1
- H-bond acceptors
- 1
- Rotatable bonds
- 0
- Molar refractivity
- 14.9837 cm³/mol
- Fraction sp³ carbons
- 1
- QED drug-likeness
- 0.3987
What it is made of
Elements
Structure
- Heavy atoms, hydrogen excluded
- 3
- Total atoms, hydrogen included
- 10
- Rings
- 0
- Aromatic rings
- 0
- Stereocentres
- 0
- Formal charge
- 0
Functional groups
Secondary amine
The molecule in three dimensions
The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.
Reactions it appears in
Other names for it
The sources also call it N-Methylmethanamine, N,N-Dimethylamine, Methanamine, N-methyl-, Dimethylamine (anhydrous), RCRA waste number U092, Dimethylamine, anhydrous, methanamine, N-methyl, Dimethylamine anhydrous, DIMETHYLAMINE-N-D1, Dimethylamine aq, HNMe2, Dimethylamine (40% aq.).
Structurally related
Seen alongside it in reaction records
Molecules that appear in the same recorded reactions as Dimethylamine. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.
Where these values came from
chemistry engine
What this page does not claim
The identifiers are what the source record holds, copied rather than recomputed. Measured values are reported as their source gave them, units and all; calculated values are marked as calculated and are not measurements. Where a field is absent the page says so, because a blank cell reads as a zero and a guessed value reads as a fact.
Nothing here is a hazard assessment, a purity statement or advice about handling a sample. A flash point quoted from a safety database is a number somebody published, not a judgement by us about whether this molecule is safe for what you intend.