Chemical Properties of Methylamine, N,N-dimethyl- (CAS 75-50-3)

InChI

InChI=1S/C3H9N/c1-4(2)3/h1-3H3

InChI Key

GETQZCLCWQTVFV-UHFFFAOYSA-N

Formula

C3H9N

SMILES

CN(C)C

Molecular Weight¹

59.11

CAS

75-50-3

Other Names

• Methanamine, N,N-dimethyl-
• N,N-DIMETHYL-METHYLAMINE
• N,N-dimethylmethanamine
• TMA
• Trimethylamine
• UN 1083
• UN 1297

• ω : Acentric Factor.
• PAff : Proton affinity (kJ/mol).
• BasG : Gas basicity (kJ/mol).
• Δ_cH°_liquid : Standard liquid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• C_p,liquid : Liquid phase heat capacity (J/mol×K).
• μ : Dipole Moment (debye).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• R_g : Radius of Gyration.
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fH°_liquid : Liquid phase enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_fusH : Enthalpy of fusion at a given temperature (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• NFPA Fire : NFPA Fire Rating.
• NFPA Health : NFPA Health Rating.
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• ρ_l : Liquid Density (kg/m³).
• I_np : Non-polar retention indices.
• I : Polar retention indices.
• Δ_fusS : Entropy of fusion at a given temperature (J/mol×K).
• S°_liquid : Liquid phase molar entropy at standard conditions (J/mol×K).
• γ : Surface Tension (N/m).
• Δ_vapS : Entropy of vaporization at a given temperature (J/mol×K).
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• T_triple : Triple Point Temperature (K).
• V_c : Critical Volume (m³/kmol).
• Z_c : Critical Compressibility.
• Z_ra : Rackett Parameter.
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ω	0.2050		KDB
PAff	948.90	kJ/mol	NIST
BasG	918.10	kJ/mol	NIST
ΔcH°liquid	[-2484.00; -2430.00]	kJ/mol
ΔcH°liquid	-2484.00	kJ/mol	NIST
ΔcH°liquid	-2430.00	kJ/mol	NIST
μ	0.60	debye	KDB
ΔfG°	98.98	kJ/mol	KDB
Rg	2.7360		KDB
ΔfH°gas	[-30.70; -23.70]	kJ/mol
ΔfH°gas	-23.86	kJ/mol	KDB
ΔfH°gas	-23.70 ± 0.75	kJ/mol	NIST
ΔfH°gas	-30.70	kJ/mol	NIST
ΔfH°liquid	[-52.70; -45.73]	kJ/mol
ΔfH°liquid	-45.73 ± 0.71	kJ/mol	NIST
ΔfH°liquid	-52.70	kJ/mol	NIST
ΔfusH°	6.55	kJ/mol	Joback Calculated Property
ΔvapH°	[22.00; 22.18]	kJ/mol
ΔvapH°	22.18	kJ/mol	NIST
ΔvapH°	22.00 ± 0.08	kJ/mol	NIST
ΔvapH°	22.00	kJ/mol	NIST
IE	[7.80; 8.56]	eV
IE	7.85 ± 0.05	eV	NIST
IE	7.80	eV	NIST
IE	8.40	eV	NIST
IE	7.80 ± 0.10	eV	NIST
IE	7.88	eV	NIST
IE	7.83 ± 0.05	eV	NIST
IE	7.83 ± 0.02	eV	NIST
IE	7.95 ± 0.10	eV	NIST
IE	7.80	eV	NIST
IE	7.82 ± 0.02	eV	NIST
IE	8.54	eV	NIST
IE	8.47	eV	NIST
IE	8.45	eV	NIST
IE	8.44	eV	NIST
IE	8.56	eV	NIST
IE	8.54	eV	NIST
IE	8.50	eV	NIST
IE	8.45 ± 0.01	eV	NIST
IE	8.50 ± 0.10	eV	NIST
log10WS	0.84		Aq. Sol...
logPoct/wat	0.178		Crippen Calculated Property
McVol	63.110	ml/mol	McGowan Calculated Property
NFPA Fire	4		KDB
NFPA Health	2		KDB
Pc	[4077.12; 4087.00]	kPa
Pc	4087.00	kPa	KDB
Pc	4087.00 ± 3.00	kPa	NIST
Pc	4077.12 ± 10.66	kPa	NIST
Inp	[479.00; 518.00]
Inp	479.00		NIST
Inp	518.00		NIST
Inp	503.00		NIST
Inp	479.00		NIST
I	[546.00; 610.00]
I	576.00		NIST
I	570.00		NIST
I	609.00		NIST
I	609.00		NIST
I	570.00		NIST
I	553.00		NIST
I	546.00		NIST
I	554.00		NIST
I	570.00		NIST
I	561.00		NIST
I	610.00		NIST
S°liquid	197.82	J/mol×K	NIST
Tboil	276.02	K	KDB
Tc	[432.79; 433.30]	K
Tc	432.79	K	KDB
Tc	433.20	K	NIST
Tc	432.79 ± 0.15	K	NIST
Tc	433.30 ± 0.30	K	NIST
Tfus	[149.15; 156.11]	K
Tfus	156.00	K	KDB
Tfus	156.11	K	Aq. Sol...
Tfus	155.95 ± 0.20	K	NIST
Tfus	149.40 ± 0.50	K	NIST
Tfus	155.95 ± 2.00	K	NIST
Tfus	155.85 ± 0.50	K	NIST
Tfus	149.15 ± 1.00	K	NIST
Ttriple	156.08 ± 0.05	K	NIST
Vc	[0.254; 30.000]	m3/kmol
Vc	0.254	m3/kmol	KDB
Vc	30.000 ± 0.070	m3/kmol	NIST
Zc	0.2884860		KDB
Zra	0.27		KDB

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[86.78; 127.54]	J/mol×K	[280.48; 439.88]
T(K) Ideal gas heat capacity (J/mol×K) 90 100 110 120 130 300 350 400
Cp,gas	86.78	J/mol×K	280.48	Joback Calculated Property
Cp,gas	94.24	J/mol×K	307.05	Joback Calculated Property
Cp,gas	101.42	J/mol×K	333.61	Joback Calculated Property
Cp,gas	108.34	J/mol×K	360.18	Joback Calculated Property
Cp,gas	114.99	J/mol×K	386.75	Joback Calculated Property
Cp,gas	121.39	J/mol×K	413.32	Joback Calculated Property
Cp,gas	127.54	J/mol×K	439.88	Joback Calculated Property
Cp,liquid	132.55	J/mol×K	280.00	NIST
ΔfusH	[6.54; 6.54]	kJ/mol	[156.08; 156.10]
ΔfusH	6.54	kJ/mol	156.08	NIST
ΔfusH	6.54	kJ/mol	156.10	NIST
ΔvapH	[22.94; 24.60]	kJ/mol	[234.50; 368.00]
T(K) Enthalpy of vaporization at a given temperature (kJ/mol) 23 23.5 24 24.5 250 300 350
ΔvapH	24.60	kJ/mol	234.50	NIST
ΔvapH	24.50	kJ/mol	250.00	NIST
ΔvapH	24.10	kJ/mol	276.00	KDB
ΔvapH	22.94	kJ/mol	276.00	NIST
ΔvapH	22.94 ± 0.03	kJ/mol	276.03	NIST
ΔvapH	22.94	kJ/mol	276.03	NIST
ΔvapH	24.35	kJ/mol	276.20	NIST
ΔvapH	24.10	kJ/mol	293.00	NIST
ΔvapH	23.00	kJ/mol	368.00	NIST
ρl	633.00	kg/m3	293.00	KDB
ΔfusS	41.93	J/mol×K	156.08	NIST
γ	0.01	N/m	293.20	KDB
ΔvapS	83.10	J/mol×K	276.03	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[1.33; 4387.25]	kPa	[199.69; 433.25]	The Yaw...
Equation			ln(Pvp) = A + B/(T + C)
Coefficient A			1.41103e+01
Coefficient B			-2.28172e+03
Coefficient C			-3.46150e+01
Temperature range, min.			199.69
Temperature range, max.			433.25
T(K) Vapor pressure (kPa) 0 1000 2000 3000 4000 200 300 400
Pvap	1.33	kPa	199.69	Calculated Property
Pvap	8.72	kPa	225.64	Calculated Property
Pvap	36.39	kPa	251.59	Calculated Property
Pvap	111.91	kPa	277.54	Calculated Property
Pvap	277.07	kPa	303.49	Calculated Property
Pvap	584.76	kPa	329.45	Calculated Property
Pvap	1093.66	kPa	355.40	Calculated Property
Pvap	1862.47	kPa	381.35	Calculated Property
Pvap	2945.07	kPa	407.30	Calculated Property
Pvap	4387.25	kPa	433.25	Calculated Property
Pvap	[0.01; 4152.02]	kPa	[156.08; 433.25]	KDB Vap...
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			8.65213e+01
Coefficient B			-5.32656e+03
Coefficient C			-1.13601e+01
Coefficient D			1.63841e-05
Temperature range, min.			156.08
Temperature range, max.			433.25
T(K) Vapor pressure (kPa) 0 1000 2000 3000 4000 200 300 400
Pvap	0.01	kPa	156.08	Calculated Property
Pvap	0.44	kPa	186.88	Calculated Property
Pvap	5.34	kPa	217.67	Calculated Property
Pvap	31.21	kPa	248.47	Calculated Property
Pvap	114.84	kPa	279.27	Calculated Property
Pvap	313.25	kPa	310.06	Calculated Property
Pvap	700.51	kPa	340.86	Calculated Property
Pvap	1371.39	kPa	371.66	Calculated Property
Pvap	2456.58	kPa	402.45	Calculated Property
Pvap	4152.02	kPa	433.25	Calculated Property

Similar Compounds

Find more compounds similar to Methylamine, N,N-dimethyl-.

Mixtures

• Methylamine, N,N-dimethyl- + Water
• Carbon dioxide + Methylamine, N,N-dimethyl- + Water

Sources

• KDB Vapor Pressure Data
• Crippen Method
• Chemical Modeling of the TMA-CO2-H2O System: A Draw Solution in Forward Osmosis for Process Water Recovery
• Joback Method
• KDB
• Aqueous Solubility Prediction Method
• McGowan Method
• NIST Webbook
• The Yaws Handbook of Vapor Pressure

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