甲基膦酸二甲酯

Description

Dimethyl Methyl Phosphonate · CAS 756-79-6 · C3H9O3P. UNII 20Z996230U. Boiling Point: 358 °F at 760 mmHg (NTP, 1992); Boiling Point: 181 °C; 79.5 °C at 20 mm Hg; Boiling Point: 181 °C @760 [mm Hg].

Identification

CAS Registry Number	756-79-6
PubChem CID	12958
Molecular formula	C3H9O3P
IUPAC name	[methoxy(methyl)phosphoryl]oxymethane
UNII (FDA)	20Z996230U

Computed Descriptors

Molecular Weight	124.08
XLogP3	-0.7
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	3
Rotatable Bond Count	2
Exact Mass	124.02893114
Monoisotopic Mass	124.02893114
Topological Polar Surface Area	35.5
Heavy Atom Count	7
Formal Charge	0

Physical & Chemical Properties

Boiling Point	358 °F at 760 mmHg (NTP, 1992)
Boiling Point	181 °C; 79.5 °C at 20 mm Hg
Boiling Point	181 °C @760 [mm Hg]
Melting Point	<50 °C
Flash Point	110 °F (NTP, 1992)
Density	1.1507 g/cu cm at 20 °C
Density	1.168 @ 20°C
Vapor Pressure	1.2 mmHg at 77 °F (NTP, 1992)
Vapor Pressure	1.2 [mmHg]
Vapor Pressure	0.962 mm Hg at 25 °C

Physical description & handling notes

• Dimethyl methylphosphonate is a clear colorless liquid with a pleasant odor. (NTP, 1992)
• Liquid
• Colorless liquid; [Merck Index] Pleasant odor; [CAMEO]
• Colorless liquid
• greater than or equal to 100 mg/mL at 70 °F (NTP, 1992)
• Miscible in alcohol, ether, benzene, acetone, carbon tetrachloride; insoluble in heavy mineral oil

GHS Hazard Classification

Reported hazard statements	H226 (15.3%), H318 (41.2%), H319 (57.6%), H332 (16%), H340 (82.4%), H361 (10.7%), H227, H351

Documented Uses

• Used in NMR probe for cell volume, as a flame retardant, and to simulate nerve agents such as sarin; [Merck Index] Used in heavy metal extraction and solvent separation; Also used as a pre-ignition additive for gasoline, an antifoam agent, a plasticizer and stabilizer, a textile conditioner and antistatic agent, and an additive in solvents and hydraulic fluids; [HSDB]
• Petroleum Production and Refining [Category: Industry]
• Textiles (Printing, Dyeing, or Finishing) [Category: Industry]
• Metal Extraction and Refining [Category: Industry]
• IN HEAVY METAL EXTRACTION & SOLVENT SEPARATION; PRE-IGNITION ADDITIVE FOR GASOLINE; ANTIFOAM AGENT; PLASTICIZER & STABILIZER; TEXTILE CONDITIONER & ANTISTATIC AGENT; ADDITIVE IN SOLVENTS & LOW TEMP HYDRAULIC FLUIDS
• ... Simulate/s/ the physical and spectroscopic (but not the biologic) properties of anticholinesterase (nerve) agents. Dimethyl methylphosphonate is also used as a flame retardant, a preignition additive for gasoline, an antifoam agent, a plasticizer and stabilizer, a textile conditioner and antistatic agent, and an additive for solvents and low-temperature hydraulic fluids.

Synonyms

DIMETHYL METHYLPHOSPHONATE; 756-79-6; DMMP; Fyrol DMMP; Pyrol dmmp; Dimethylmethylphosphonate; Dimethyl methanephosphonate; Phosphonic acid, methyl-, dimethyl ester; Dimethoxymethylphosphine oxide; NCI-C54762; Methanephosphonic acid dimethyl ester; Methyl phosphonic acid, dimethyl ester; DTXSID0020494; Phosphonic acid, methyl-,dimethyl ester; NSC-62240; DTXCID40494

Frequently Asked Questions

What are the CAS number and molecular formula of Dimethyl Methyl Phosphonate?

CAS 756-79-6; molecular formula C3H9O3P; molecular weight — g/mol.

What other names is Dimethyl Methyl Phosphonate known by?

DIMETHYL METHYLPHOSPHONATE, 756-79-6, DMMP, Fyrol DMMP, Pyrol dmmp, Dimethylmethylphosphonate.

Is Dimethyl Methyl Phosphonate classified as hazardous?

Hazard statements reported: H226, H318, H319, H332, H340.

What are the key physical properties of Dimethyl Methyl Phosphonate?

Boiling Point: 358 °F at 760 mmHg (NTP, 1992); Boiling Point: 181 °C; 79.5 °C at 20 mm Hg; Boiling Point: 181 °C @760 [mm Hg]; Melting Point: <50 °C.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.