Chemical Properties of Phosphonic acid, methyl-, bis(trimethylsilyl) ester (CAS 18279-83-9)

InChI

InChI=1S/C7H21O3PSi2/c1-11(8,9-12(2,3)4)10-13(5,6)7/h1-7H3

InChI Key

KFHCUPQNEZPPQU-UHFFFAOYSA-N

Formula

C7H21O3PSi2

SMILES

C[Si](C)(C)OP(C)(=O)O[Si](C)(C)C

Molecular Weight¹

240.38

CAS

18279-83-9

Other Names

• Methylphosphonic acid (TMS-derivative)
• Methylphosphonic acid, bis(trimethylsilyl) ester
• Bis(trimethylsilyl)methylphosphonate
• Methylphosphonic acid, bis-TMS
• Methylphosphonic acid, 2tms derivative

• ω : Acentric Factor.
• Δ_fG° : Standard Gibbs free energy of formation (kJ/mol).
• Δ_fH°_gas : Enthalpy of formation at standard conditions (kJ/mol).
• Δ_vapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
• IE : Ionization energy (eV).
• log₁₀WS : Log10 of Water solubility in mol/l.
• logP_oct/wat : Octanol/Water partition coefficient.
• P_c : Critical Pressure (kPa).
• I_np : Non-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
ω	0.4818		Relay (1.0) Calculated Property
ΔfG°	-308.59	kJ/mol	Relay (1.0-beta) Calculated Property
ΔfH°gas	-910.56	kJ/mol	Relay (1.0) Calculated Property
ΔvapH°	55.77	kJ/mol	Relay (1.0) Calculated Property
IE	9.95	eV	Relay (1.0) Calculated Property
log10WS	-1.12		Relay (1.0) Calculated Property
logPoct/wat	3.512		Crippen Calculated Property
Pc	1634.28	kPa	Relay (1.0-beta) Calculated Property
Inp	[1142.00; 1154.00]
Inp	1154.00		NIST
Inp	1142.00		NIST
Inp	1147.00		NIST
Inp	1147.00		NIST
Inp	1142.00		NIST
Inp	1154.00		NIST
Inp	1142.00		NIST
Inp	1154.00		NIST
Inp	1147.00		NIST
Tboil	485.77	K	Relay (1.0) Calculated Property
Tc	617.96	K	Relay (1.0) Calculated Property
Tfus	305.02	K	Relay (1.0) Calculated Property
Vc	0.796	m3/kmol	Relay (1.0) Calculated Property

Similar Compounds

Find more compounds similar to Phosphonic acid, methyl-, bis(trimethylsilyl) ester.

Sources

• Cheméo Relay (1.0)
• Cheméo Relay (1.0, beta) Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
• Crippen Method
• Crippen Method
• NIST Webbook

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