Chemical Properties of Dihydropyran (CAS 25512-65-6)

InChI

InChI=1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2

InChI Key

BUDQDWGNQVEFAC-UHFFFAOYSA-N

Formula

C5H8O

SMILES

C1=COCCC1

Molecular Weight¹

84.12

CAS

25512-65-6

Other Names

• dihydro-2H-pyran

• Δ_cH°_liquid : Standard liquid enthalpy of combustion (kJ/mol).
• C_p,gas : Ideal gas heat capacity (J/mol×K).
• η : Dynamic viscosity (Pa×s).
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_fusH° : Enthalpy of fusion at standard conditions (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• Δ_vapH : Enthalpy of vaporization at a given temperature (kJ/mol).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• McVol : McGowan's characteristic volume (ml/mol).
• P_c : Critical Pressure (kPa).
• P_vap : Vapor pressure (kPa).
• I : Polar retention indices.
• T_boil : Normal Boiling Point Temperature (K).
• T_c : Critical Temperature (K).
• T_fus : Normal melting (fusion) point (K).
• V_c : Critical Volume (m³/kmol).
• ¹: Molecular weight from the IUPAC atomic weights tables.

Physical Properties

Property	Value	Unit	Source
ΔcH°liquid	-2953.00 ± 1.00	kJ/mol	NIST
ΔfG°	-32.78	kJ/mol	Joback Calculated Property
ΔfH°gas	-146.09	kJ/mol	Joback Calculated Property
ΔfusH°	8.67	kJ/mol	Joback Calculated Property
ΔvapH°	32.00	kJ/mol	NIST
log10WS	-1.25		Crippen Calculated Property
logPoct/wat	1.310		Crippen Calculated Property
McVol	72.020	ml/mol	McGowan Calculated Property
Pc	4869.76	kPa	Joback Calculated Property
I	[974.00; 1026.00]
I	980.00		NIST
I	1000.00		NIST
I	1026.00		NIST
I	978.00		NIST
I	974.00		NIST
I	980.00		NIST
Tboil	364.13	K	Joback Calculated Property
Tc	573.37	K	Joback Calculated Property
Tfus	185.06	K	Joback Calculated Property
Vc	0.257	m3/kmol	Joback Calculated Property

Temperature Dependent Properties

Property	Value	Unit	Temperature (K)	Source
Cp,gas	[115.35; 175.50]	J/mol×K	[364.13; 573.37]
Cp,gas	115.35	J/mol×K	364.13	Joback Calculated Property
Cp,gas	126.89	J/mol×K	399.00	Joback Calculated Property
Cp,gas	137.79	J/mol×K	433.88	Joback Calculated Property
Cp,gas	148.08	J/mol×K	468.75	Joback Calculated Property
Cp,gas	157.79	J/mol×K	503.62	Joback Calculated Property
Cp,gas	166.92	J/mol×K	538.49	Joback Calculated Property
Cp,gas	175.50	J/mol×K	573.37	Joback Calculated Property
η	[0.0003376; 0.0102466]	Pa×s	[185.06; 364.13]
η	0.0102466	Pa×s	185.06	Joback Calculated Property
η	0.0039085	Pa×s	214.91	Joback Calculated Property
η	0.0018859	Pa×s	244.75	Joback Calculated Property
η	0.0010662	Pa×s	274.60	Joback Calculated Property
η	0.0006741	Pa×s	304.44	Joback Calculated Property
η	0.0004625	Pa×s	334.28	Joback Calculated Property
η	0.0003376	Pa×s	364.13	Joback Calculated Property
ΔvapH	32.20	kJ/mol	280.50	NIST

Correlations

Property	Value	Unit	Temperature (K)	Source
Pvap	[3.47; 100.34]	kPa	[273.15; 358.15]	KDB Vap...
Equation			ln(Pvp) = A + B/T + C*ln(T) + D*T^2
Coefficient A			1.54163e+01
Coefficient B			-3.87061e+03
Coefficient C			-7.96193e-05
Coefficient D			1.66471e-10
Temperature range, min.			273.15
Temperature range, max.			358.15
Pvap	3.47	kPa	273.15	Calculated Property
Pvap	5.58	kPa	282.59	Calculated Property
Pvap	8.69	kPa	292.04	Calculated Property
Pvap	13.16	kPa	301.48	Calculated Property
Pvap	19.44	kPa	310.93	Calculated Property
Pvap	28.06	kPa	320.37	Calculated Property
Pvap	39.65	kPa	329.82	Calculated Property
Pvap	54.98	kPa	339.26	Calculated Property
Pvap	74.88	kPa	348.71	Calculated Property
Pvap	100.34	kPa	358.15	Calculated Property

Similar Compounds

Find more compounds similar to Dihydropyran.

Sources

• KDB Vapor Pressure Data
• Crippen Method
• Crippen Method
• Joback Method
• McGowan Method
• NIST Webbook

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