CARBON DISELENIDE
CARBON DISELENIDE Basic information
- Product Name:
- CARBON DISELENIDE
- Synonyms:
-
- Methanediselone
- Carbon selenide
- Carbon selenide (CSe2)
- carbonselenide(cse2)
- CSe2
- Diselenoxomethane
- Carbon diselenide (CSe2)
- CAS:
- 506-80-9
- MF:
- CSe2
- MW:
- 169.93
- EINECS:
- 208-054-9
- Mol File:
- 506-80-9.mol
CARBON DISELENIDE Chemical Properties
- 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
- Water Solubility
- insoluble H2O; miscible with CCl4, CS2, toluene [MER06]
- Stability:
- Stable.
- EPA Substance Registry System
- Carbon selenide (CSe2) (506-80-9)
CARBON DISELENIDE Usage And Synthesis
Chemical Properties
light sensitive, golden yellow, strongly refractive liquid; odor of rotten radishes; turns brown to black on storage [MER06]
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.