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Chemical Datasheet

DF

Chemical Identifiers

CAS Number UN/NA Number DOT Hazard Label USCG CHRIS Code
  • 676-99-3
 none data unavailable none
NIOSH Pocket Guide International Chem Safety Card
none none
NFPA 704
data unavailable
General Description
This compound is a precursor to the chemical weapons sarin and soman and is expected to react similarly to both of those compounds. See the chemical datasheets for sarin and soman for more information.

Hazards

Reactivity Alerts
Air & Water Reactions
This compound is expected to form corrosive and toxic hydrofluoric acid on contact with water.
Fire Hazard
No information available.
Health Hazard
No information available.
Reactivity Profile
No information available.
Belongs to the Following Reactive Group(s)
Potentially Incompatible Absorbents

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

Response Recommendations

Isolation and Evacuation
No information available.
Firefighting
No information available.
Non-Fire Response
No information available.
Protective Clothing
No information available.
DuPont Tychem® Suit Fabrics
No information available.
First Aid
No information available.

Physical Properties

Chemical Formula:
  • CH3F2OP
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: 100.0045
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable

AEGLs (Acute Exposure Guideline Levels)

No AEGL information available.

ERPGs (Emergency Response Planning Guidelines)

No ERPG information available.

PACs (Protective Action Criteria)

Chemical PAC-1 PAC-2 PAC-3
Methyl difluorophosphite; (Methylphosphonic difluoride) (676-99-3) 0.38 mg/m3 4.1 mg/m3 25 mg/m3
(DOE, 2018)

Regulatory Information

EPA Consolidated List of Lists

No regulatory information available.

CISA Chemical Facility Anti-Terrorism Standards (CFATS)

RELEASE THEFT SABOTAGE
Chemical of Interest CAS Number Min Conc STQ Security
Issue		 Min Conc STQ Security
Issue		 Min Conc STQ Security
Issue
DF; [Methyl phosphonyl difluoride] 676-99-3 CUM 100 grams CW/CWP

(CISA, 2007)

OSHA Process Safety Management (PSM) Standard List

No regulatory information available.

Alternate Chemical Names