| Identification | Back Directory | [Name]
CARBON DISELENIDE | [CAS]
506-80-9 | [Synonyms]
CSe2
Carbon selenide
Methanediselone
Diselenoxomethane
carbonselenide(cse2)
Carbon selenide (CSe2) | [EINECS(EC#)]
208-054-9 | [Molecular Formula]
CH2Se | [MDL Number]
MFCD00049810 | [MOL File]
506-80-9.mol | [Molecular Weight]
92.9866 |
| Chemical Properties | Back Directory | [Appearance]
liquid | [Melting point ]
-45.5° | [Boiling point ]
bp 125-126°; bp8.0 10.0° | [density ]
d420 2.6824; d425 2.6626 | [refractive index ]
nD20 1.845 | [solubility ]
insoluble in H2O; very soluble in ctc, toluene | [form ]
yellow liquid | [color ]
yellow | [Stability:]
Stable. | [Water Solubility ]
insoluble H2O; miscible with CCl4, CS2, toluene [MER06] | [EPA Substance Registry System]
Carbon selenide (CSe2) (506-80-9) |
| Hazard Information | Back Directory | [Chemical Properties]
liquid | [Preparation]
The preparation method of carbon selenide: a dry stream of N2 is saturated with CH2Cl2 vapor, and the gas mixture is introduced into a Vycor flask in which Se is heated to 550-600°C. The crude product precipitates in the receiver, equipped with a Liebig condenser. The cooling by the condenser is stopped and the liquid is forced with steam into a cooled flask, separated from the H2O and dried over CaCl2. It is then distilled at 46°C and 50 mm. in a fractionating column (30 cm. long).
| [Solubility in organics]
Dissolves, yielding a yellow liquid, in CS2, CCl4, ether, benzene, nitrobenzene, dioxane, ethyl acetate and acetone. Slightly soluble in glacial acetic acid and alcohol, decomposing these rapidly; pyridine behaves in the same manner. Dissolves copious quantities of flowers of sulfur, but red Se hardly at all. |
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