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Basic Information
CAS No.: 503-80-0
Name: CACODYLOXIDE
Molecular Structure:
Molecular Structure of 503-80-0 (CACODYLOXIDE)
Formula: C4H12As2O
Molecular Weight: 225.982
Synonyms: Dimethylarsine oxide;Kakodyloxid;Arsinous acid, dimethyl-, anhydride;Kakodyloxyd;TL 297;Parakakodyloxyd;Bis-dimethylarsin-oxyd;Cacodyl oxide;Tetramethyl-diarsoxan;Dimethylarsinous acid anhydride;tetramethyl-diarsoxane;
Density: g/cm3
Melting Point: -25°C
Boiling Point: 150°Cat760mmHg
Flash Point: 45.9°C
Safety: Ignites spontaneously in air. When heated to decomposition it emits toxic fumes of As. See also ARSENIC COMPOUNDS.
PSA: 9.23000
LogP: 1.50520
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Chemistry

IUPAC Name: Bis(dimethylarsine) oxide
Synonyms of Bis(dimethylarsine) oxide (CAS NO.503-80-0): Cacodyl oxide ; Dimethylarsine oxide ; Dimethylarsinous acid anhydride ; Kakodyloxid ; Arsine, oxybis(dimethyl-) ; Arsinous acid, dimethyl-, anhydride (9CI)
InChI: InChI=1/C4H12As2O/c1-5(2)7-6(3)4/h1-4H3
InChIKey: LOKPKYSOCCPWIZ-UHFFFAOYAL 
Std. InChI: InChI=1S/C4H12As2O/c1-5(2)7-6(3)4/h1-4H3 
Std. InChIKey: LOKPKYSOCCPWIZ-UHFFFAOYSA-N  
CAS NO: 503-80-0                 
Molecular Formula: C21H24As3Bi2N3NaO12S 3+                                            
Molecular Weight: 1272.33849                                                            
Molecular Structure :
H bond acceptors:  1 
H bond donors:  0 
Freely Rotating Bonds:  2 
Polar Surface Area:  9.23 Å2 
Flash Point:  45.9 °C 
Enthalpy of Vaporization:  37.1 kJ/mol 
Boiling Point:  150 °C at 760 mmHg 
Vapour Pressure:  4.99 mmHg at 25°C 

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LCLo inhalation 1300mg/m3/10M (1300mg/m3)   National Defense Research Committee, Office of Scientific Research and Development, Progress Report.Vol. NDCrc-132, Pg. AUG1942,

Consensus Reports

Arsenic and its compounds are on the Community Right-To-Know List.

Safety Profile

Ignites spontaneously in air. When Bis(dimethylarsine) oxide (CAS NO.503-80-0) is heated to decomposition, it emits toxic fumes of As. See also ARSENIC COMPOUNDS.