二氯化甲烷膦

Description

Methanephosphonic dichloride · CAS 676-97-1 · CH3Cl2OP. UNII 2XGZ22DHQ2. Boiling Point: 325 °F; Boiling Point: 162 °C; Boiling Point: 162 °C @760 [mm Hg].

Identification

CAS Registry Number	676-97-1
PubChem CID	12671
Molecular formula	CH3Cl2OP
IUPAC name	dichlorophosphorylmethane
UNII (FDA)	2XGZ22DHQ2

Computed Descriptors

Molecular Weight	132.91
XLogP3	1
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	131.9298571
Monoisotopic Mass	131.9298571
Topological Polar Surface Area	17.1
Heavy Atom Count	5
Formal Charge	0

Physical & Chemical Properties

Boiling Point	325 °F
Boiling Point	162 °C
Boiling Point	162 °C @760 [mm Hg]
Melting Point	95-99 °F
Melting Point	32 °C
Density	1.39 g/cu cm at 38 °C
Vapor Pressure	760 mm Hg at 163 °C

Physical description & handling notes

• Strongly irritates skin. Contact may destroy or irreversibly alter skin tissue. Very toxic by ingestion, inhalation, or by skin absorption. Combustible, though may be difficult to ignite.
• A solid below 95-99 deg F; [HSDB] Colorless liquid; Melting point = 90-93 deg F; [MSDSonline]
• Low melting solid
• Pungent odor
• When heated to decomposition it emits toxic fumes of /hydrogen chloride and phosphorus oxides/.
• Index of refraction: 1.462 at 38 °C

GHS Hazard Classification

Reported hazard statements	H314 (100%), H330 (100%), H318, H371, H373

Documented Uses

• Used for the preparation of oligonucleotides; [HSDB]
• For the preparation of oligonucleotides containing methylphosphonates at defined sites.
• Schedule 2B precursor to sarin, soman, DF, and chlorosoman.
• The oxidation of low-valency organophosphorus compounds ... This method is used in the production of methylphosphonic acid dichloride (676-97-1) by reaction of methyldichlorophosphine with sulfuryl chloride or chlorosulfuric acid.
• /Four methods of synthesis/: 1) dimethyldiphosphonic acid, phosphorus trichloride; 2) dimethyldiphosphonic acid, methylphosphonous dichloride; 3) DMMP, thionyl chloride; 4) "Perren- Kinnear" complex and methylene chloride.
• Phosphonic dichloride, P-methyl-: ACTIVE

Synonyms

METHYLPHOSPHONIC DICHLORIDE; 676-97-1; Methylphosphonyl dichloride; Methyl phosphonic dichloride; methylphosphonic acid dichloride; Methylphosphonyl chloride; HSDB 6329; Methanephosphonic dichloride; Dichloromethylphosphine oxide; EINECS 211-634-4; BRN 1071305; CH3POCl2; DTXSID6060979; Methanephosphonic acid dichloride; Phosphonodichloridic acid, methyl-; 4-04-00-03509 (Beilstein Handbook Reference)

Frequently Asked Questions

What are the CAS number and molecular formula of Methanephosphonic dichloride?

CAS 676-97-1; molecular formula CH3Cl2OP; molecular weight — g/mol.

What other names is Methanephosphonic dichloride known by?

METHYLPHOSPHONIC DICHLORIDE, 676-97-1, Methylphosphonyl dichloride, Methyl phosphonic dichloride, methylphosphonic acid dichloride, Methylphosphonyl chloride.

Is Methanephosphonic dichloride classified as hazardous?

Hazard statements reported: H314, H330, H318, H371, H373.

What are the key physical properties of Methanephosphonic dichloride?

Boiling Point: 325 °F; Boiling Point: 162 °C; Boiling Point: 162 °C @760 [mm Hg]; Melting Point: 95-99 °F.

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.