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Basic Information
CAS No.: 20333-40-8
Name: DIBUTYLDISELENIDE
Article Data: 3
Molecular Structure:
Molecular Structure of 20333-40-8 (DIBUTYLDISELENIDE)
Formula: C8H18 Se2
Molecular Weight: 272.151
Synonyms: Butyldiselenide (6CI,7CI,8CI); Dibutyl diselenide; Dibutyldiselenium
Density: g/cm3
Boiling Point: 274.1°Cat760mmHg
Flash Point: 119.6°C
Safety: Poison by intravenous route. When heated to decomposition it emits toxic fumes of Se.
PSA: 0.00000
LogP: 2.74660
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Chemistry

IUPAC Name: 1-Butyldiselanylbutane
Synonyms of Butyl diselenide (CAS NO.20333-40-8): 4-01-00-01566 (Beilstein Handbook Reference) ; BRN 1698055 ; Di-n-butyl-diselinide ; Dibutyldiselenide ; Dibutyldiselenium ; Butyl diselenide ; Diselenide, dibutyl- (9CI) ;
CAS NO: 20333-40-8
Molecular Formula of Butyl diselenide (CAS NO.20333-40-8): C8H18Se2 
Molecular Weight of Butyl diselenide (CAS NO.20333-40-8): 272.1485 
Freely Rotating Bonds: 7
Flash Point: 119.6 °C
Enthalpy of Vaporization: 49.19 kJ/mol
Boiling Point: 274.1 °C at 760 mmHg
Vapour Pressure: 0.00921 mmHg at 25°C
Molecular Structure:

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intravenous 75mg/kg (75mg/kg)   U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. Vol. NX#09252,

Safety Profile

Poison by intravenous route. When heated to decomposition it emits toxic fumes of Se.

Standards and Recommendations

OSHA PEL: TWA 0.2 mg(Se)/m3
ACGIH TLV: TWA 0.2 mg(Se)/m3