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627-53-2

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Basic Information
CAS No.: 627-53-2
Name: DIETHYL SELENIDE
Article Data: 31
Molecular Structure:
Molecular Structure of 627-53-2 (DIETHYL SELENIDE)
Formula: C4H10 Se
Molecular Weight: 137.083
Synonyms: Ethylselenide (6CI,7CI,8CI); Diethyl selenide; Diethyl selenium; Diethylmonoselenide
Density: 1.232 g/mL at 25 °C(lit.)
Melting Point: 55°C
Boiling Point: 108 °C(lit.)
Flash Point: 72 °F
Hazard Symbols: T,N
Risk Codes: R10; R23/25; R33; R50/53
Safety: Low toxicity by inhalation. When heated to decomposition it emits toxic vapors of Se.
PSA: 0.00000
LogP: 1.56700
Synthetic route
75-03-6

ethyl iodide

627-53-2

diethylselenium

Conditions
ConditionsYield
With potassium hydroxide; selenium; hydrazine hydrate at 40 - 50℃;99%
17696-75-2

diethyl selenoxide

627-53-2

diethylselenium

Conditions
ConditionsYield
With hexamethyldisilathiane In dichloromethane at 40℃; for 2h;97%
74-96-4

ethyl bromide

627-53-2

diethylselenium

Conditions
ConditionsYield
With potassium hydroxide; selenium; hydrazine hydrate at 35 - 40℃;83%
With piazselenole; magnesium 1.) diethyl ether, 2.) diethyl ether, reflux, 15 min; Yield given. Multistep reaction;
74-96-4

ethyl bromide

A

627-53-2

diethylselenium

B

57796-75-5

divinyl selenide

C

87925-91-5

vinyl ethyl selenide

Conditions
ConditionsYield
With potassium hydroxide; red selenium; water; tin(ll) chloride; acetylene at 105 - 115℃; under 9120 Torr; for 5h;A 4%
B 21%
C 44%
74-96-4

ethyl bromide

74-86-2

acetylene

A

627-53-2

diethylselenium

B

57796-75-5

divinyl selenide

C

87925-91-5

vinyl ethyl selenide

Conditions
ConditionsYield
With potassium hydroxide; red selenium; water; tin(ll) chloride at 105 - 115℃; under 9120 Torr; for 5h;A 4%
B 21%
C 44%
74-86-2

acetylene

A

627-53-2

diethylselenium

B

57796-75-5

divinyl selenide

C

87925-91-5

vinyl ethyl selenide

Conditions
ConditionsYield
With potassium hydroxide; red selenium; water; ethidium Bromide; tin(ll) chloride at 105 - 115℃; under 9120 Torr; for 5h;A 4%
B 21%
C 44%
74-85-1

ethene

A

627-53-2

diethylselenium

B

593-69-1

ethaneselenol

Conditions
ConditionsYield
With molybdenum (IV) sulfide; selen(o) hydrogen at 220℃;
593-69-1

ethaneselenol

141-52-6

sodium ethanolate

A

627-53-2

diethylselenium

B

873964-28-4

triselenoorthoformic acid triethyl ester

Conditions
ConditionsYield
folgendes Behandeln mit CCl4;
627-44-1

diethylmercury

627-53-2

diethylselenium

Conditions
ConditionsYield
With selenium(IV) oxide at 50℃;
627-44-1

diethylmercury

A

627-53-2

diethylselenium

B

ethylmercury (1+); selenite

Conditions
ConditionsYield
With selenium(IV) oxide
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  • High Purity diethyl selenide

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    627-53-2

    High Purity diethyl selenide

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  • Casno:

    627-53-2

    Diethyl Selenide

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Chemistry

Empirical Formula: C4H10Se
Molecular Weight: 137.0822 g/mol
Flash Point: 19.1 °C
Enthalpy of Vaporization: 33.25 kJ/mol
Boiling Point: 108 °C at 760 mmHg
Vapour Pressure: 30.9 mmHg at 25 °C 
Structure of Diethyl selenide (CAS NO.627-53-2):
              
IUPAC Name of Diethyl selenide (CAS NO.627-53-2): Ethylselanylethane
Product Categories of Diethyl selenide (CAS NO.627-53-2): Precursors by Metal;Vapor Deposition Precursors

Toxicity Data With Reference

1.    

ihl-mus LCLo:3 g/m3/10M

    NDRC**    National Defense Research Committee, Office of Scientific Research and Development, Progress Report NDCrc-132,JUL42 .

Safety Profile

Low toxicity by inhalation. When heated to decomposition it emits toxic vapors of Se.
Hazard Codes: ToxicT,DangerousN
Risk Statements: 10-23/25-33-50/53 
R10:Flammable. 
R23/25:Toxic by inhalation and if swallowed. 
R33:Danger of cumulative effects. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements: 16-20/21-23-28-45-60-61 
S16:Keep away from sources of ignition. 
S20:When using, do not eat or drink. 
S21:When using do not smoke. 
S23:Do not breathe vapour. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.

Standards and Recommendations

ACGIH TLV: TWA 0.2 mg(Se)/m3

Specification

 Diethyl selenide ,its cas register number is 627-53-2. It also can be called Ethyl selenide ; Methylene diisocyanate ; Ethane, 1,1'-selenobis- ;and (Ethylselanyl)ethane .