Phosphonic acid, dimethyl ester

An organic compound, C2H7O3P, 110.049 g/mol. Boiling point 338 to 340 °F at 760 mmHg, melting point 29 °C, as published.

verified recordOrganic compound9 measured properties

Identifiers

Molecular formula: C₂H₇O₃P
Molecular weight: 110.049 g/mol
Exact mass: 110.013281 g/mol
IUPAC name: methoxyphosphonoyloxymethane
SMILES: CO[PH](=O)OC
InChI: InChI=1S/C2H7O3P/c1-4-6(3)5-2/h6H,1-2H3
InChIKey: HZCDANOFLILNSA-UHFFFAOYSA-N

Open in ReactionLens Use in reaction prediction

Measured properties

Published measurements, each with its source. Two readings of one property are both shown, in the units each used.

Boiling Point: 338 to 340 °F at 760 mmHg (NTP, 1992)measured · CAMEO Chemicals; 170.5measured · Hazardous Substances Data Bank (HSDB)
Melting Point: 29 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Density: 1.2 (USCG, 1999) - Denser than water; will sinkmeasured · CAMEO Chemicals; 1.2002 g/cu cm at 20 °Cmeasured · Hazardous Substances Data Bank (HSDB)
Solubility: greater than or equal to 100 mg/mL at 67.1 °F (NTP, 1992)measured · CAMEO Chemicals; Soluble in water; miscible with most organic solventsmeasured · Hazardous Substances Data Bank (HSDB)
Vapor Pressure: 1 mmHg at 77 °F ; 8 mmHg at 122 °F; 32 mmHg at 158 °F (NTP, 1992)measured · CAMEO Chemicals; 4.52 [mmHg]measured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
LogP: -1.2measured · ILO-WHO International Chemical Safety Cards (ICSCs)
Flash Point: 85 °F (NTP, 1992)measured · CAMEO Chemicals; 70 °Cmeasured · Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Viscosity: 1.06 centistokes at 25 °Cmeasured · Bennett SR et al; Environmental Hazards of Chemical Agent Simulants. CRDC-TR-84055, Aberdeen Proving Ground, MD (1984)
Refractive Index: Index of refraction: 1.4036 at 20 °C/Dmeasured · Lide, D.R. CRC Handbook of Chemistry and Physics 86TH Edition 2005-2006. CRC Press, Taylor & Francis, Boca Raton, FL 2005, p. 3-200

Calculated properties

Derived from the structure, not from a sample; kept apart from the measurements above.

Molecular weight: 110.05 g/molcalculated · reference compound database; Average mass of one molecule, from reference compound database.
Exact mass: 110.01328108 Dacalculated · reference compound database; Mass of the most common isotopic form.
XLogP3: -0.5calculated · reference compound database; Estimated oil/water partition, computed by reference compound database.
Polar surface area: 35.5 Å²calculated · reference compound database; Polar surface area as computed by reference compound database.
Complexity: 46calculated · reference compound database; A rough measure of how intricate the structure is.
H-bond donors: 0calculated · reference compound database
H-bond acceptors: 3calculated · reference compound database
logP: 0.6689calculated · chemistry engine; Estimated preference for oil over water. Higher means more oil-like.
Topological polar surface area: 35.53 Å²calculated · chemistry engine; Surface area from polar atoms; relates to how easily a molecule crosses membranes.
H-bond donors: 0calculated · chemistry engine; Atoms that can donate a hydrogen bond.
H-bond acceptors: 3calculated · chemistry engine; Atoms that can accept a hydrogen bond.
Rotatable bonds: 2calculated · chemistry engine; Single bonds the molecule can freely twist around.
Molar refractivity: 23.0195 cm³/molcalculated · chemistry engine; Relates to the molecule's polarisability.
Fraction sp³ carbons: 1calculated · chemistry engine; Share of carbon atoms with tetrahedral bonding.
QED drug-likeness: 0.4898calculated · chemistry engine; Quantitative estimate of drug-likeness (0–1).

What it is made of

Elements

O Oxygen3 atoms · 43.6% by mass
P Phosphorus1 atom · 28.1% by mass
C Carbon2 atoms · 21.8% by mass
H Hydrogen7 atoms · 6.4% by mass

Percentages are of the molecular weight above, worked out the same way the molar mass calculator does it.

Structure

Heavy atoms, hydrogen excluded: 6
Total atoms, hydrogen included: 13
Rings: 0
Aromatic rings: 0
Stereocentres: 0
Formal charge: 0

The molecule in three dimensions

Rotate and inspect the atoms. Loaded only when you ask, so the page stays light.

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

No documented reaction with a written procedure and a source involves Phosphonic acid, dimethyl ester yet.

Other names for it

The systematic name on this record is methoxyphosphonoyloxymethane.

The sources also call it RefChem:929181, DTXCID20164557, Bis(hydroxymethyl)phosphine oxide, Dimethoxyphosphine oxide, Dimethyl acid phosphite, Dimethyl hydrogen phosphite, Dimethyl hydrogen phosphonate, Dimethyl phosphite, Dimethyl phosphonate, Dimethylester kyselini fosforite, Dimethylester kyseliny fosforite, Dimethylfosfit.

Structurally related

Nothing structurally close to Phosphonic acid, dimethyl ester has a page here yet.

Where these values came from

reference compound database13361
compound record
chemistry engine
structure perception

compound record.

What this page does not claim

Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.