CAS No.628-39-7,Diethyldiselenide Suppliers

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Basic Information

Molecular Structure:
CAS No.:	628-39-7
Name:	Diethyldiselenide
Article Data:	33

Formula:	C₄H₁₀Se₂
Molecular Weight:	216.043
Synonyms:	Ethyldiselenide (6CI,7CI,8CI);Diselenide, diethyl;
EINECS:	211-042-6
Density:	1.23 g/cm³
Boiling Point:	199.164 °C at 760 mmHg
Flash Point:	74.252 °C
Appearance:	Red liquid
Risk Codes:	23/25-33-50/53
Safety:	20/21-28-45
PSA:	0.00000
LogP:	1.18620

Synthetic route

: 74-96-4
ethyl bromide

: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With potassium hydroxide; selenium; hydrazine hydrate In water at 40 - 45℃;	97%
With potassium hydroxide; selenium(IV) oxide; hydrazine hydrate In water at 40 - 45℃;	95%
With disodium diselenide In N,N-dimethyl-formamide at 50℃; for 0.5h;	88%

: 75-03-6
ethyl iodide

: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With disodium diselenide; tetrabutylammomium bromide In water for 0.05h;	90%
With potassium hydroxide; selenium; hydrazine hydrate In water at 60 - 70℃;	89%
With sodium hydroxide; selenium; hydrazine hydrate 1.) MeOH, 6 h; Multistep reaction;
With selenium; copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 90℃; Inert atmosphere;

: 75-07-0
acetaldehyde

: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With disodium diselenide; sodium hydrogen selenide; N,N-dimethyl-formamide In ethanol at 60 - 70℃; for 7h;	90%

: 95494-85-2
1,2-bis(ethylseleno)-1-phenylethene

A: 18782-55-3
2,5-bis-phenylselenophene

B: 628-39-7
diethyl diselenide

C: (1-ethylseleno)-1-phenylethene

D: (tris-ethylselanyl-vinyl)-benzene

Conditions

Conditions	Yield
at 180℃; for 25h;	A n/a B n/a C 81% D n/a

...Expand

: 693-03-8
n-butyl magnesium bromide

: 175538-67-7
(Z)-1,2-bis(ethylseleno)ethene

A: 628-39-7
diethyl diselenide

B: 111-65-9
octane

C: 7433-78-5
cis-5-decene

D: (Z)-ethyl-1-hexene-1-yl selenide

Conditions

Conditions	Yield
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 20℃; Further byproducts given;	A 145 mg B 226 mg C 78% D 42 mg

...Expand

: 75-07-0
acetaldehyde

A: 15732-69-1
2,4,6-trimethyl-1,3,5-triselenane

B: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With bis(trimethylsilyl)selenide; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 6h;	A 54% B n/a

: 5926-26-1
(chloromethyl)trimethoxysilane

: GENERIC INORGANIC CATION; ethaneselenolate

A: 628-39-7
diethyl diselenide

B: 126912-03-6
bis(trimethoxysilylmethyl) selenide

C: ethyl (trimethoxysilyl)methyl selenide

D: bis(trimethoxysilylmethyl)diselenide

Conditions

Conditions	Yield
In tetrahydrofuran for 1.5h; Heating;	A n/a B n/a C n/a D 35%

...Expand

: 17912-00-4
bis-(1-bromo-vinyl) sulfoxide

: 57796-75-5
divinyl selenide

A: 628-39-7
diethyl diselenide

B: 136308-15-1
di<2-(vinylseleno)vinyl> sulfoxide

Conditions

Conditions	Yield
With ammonia; sodium for 0.666667h;	A 20% B 12%

...Expand

: 64-67-5
diethyl sulfate

: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With disodium diselenide
With potassium diselenide

: 60-29-7
diethyl ether

: 628-39-7
diethyl diselenide

Conditions

Conditions	Yield
With aluminum selenide at 250 - 300℃;

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Specification

Diethyldiselenide is an organic compound with the formula C₄H₁₀Se₂, and its systematic name is the same with the product name. With the CAS registry number 628-39-7, it is also named as Diselenide, diethyl. It belongs to the product category of Organoselenides. Its EINECS number is 211-042-6. In addition, the molecular weight is 216.04. Its classification code is Skin / Eye Irritant. This chemical should be sealed and stored below the temperature of 5 °C. Moreover, it should be protected from oxides.

Physical properties of Diethyldiselenide are: (1)ACD/LogP: 3.22; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.22; (4)ACD/LogD (pH 7.4): 3.22; (5)ACD/BCF (pH 5.5): 164.89; (6)ACD/BCF (pH 7.4): 164.89; (7)ACD/KOC (pH 5.5): 1344.87; (8)ACD/KOC (pH 7.4): 1344.87; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 3; (12)Flash Point: 74.252 °C; (13)Enthalpy of Vaporization: 41.757 kJ/mol; (14)Boiling Point: 199.164 °C at 760 mmHg; (15)Vapour Pressure: 0.49 mmHg at 25°C.

Preparation of Diethyldiselenide: this chemical can be prepared by bromoethane at the temperature of 50 °C. This reaction will need reagent Na₂Se₂ and solvent dimethylformamide with the reaction time of 30 min. The yield is about 88%.

Uses of Diethyldiselenide: it can be used to produce 3-ethylselanyl-propene at the temperature of 50 °C. It will need reagents ytterbium powder, TMSCl and solvent tetrahydrofuran with the reaction time of 2 hours. The yield is about 60%.

When you are using this chemical, please be cautious about it as the following:
This chemical is toxic by inhalation and if swallowed. It is very toxic to aquatic organisms as it may cause long-term adverse effects in the aquatic environment. This substance has a danger of cumulative effects. When using it, you must not eat, drink or smoke. After contact with skin, you need to wash immediately with plenty of ... (to be specified by the manufacturer). In case of accident or if you feel unwell, you should seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: [Se]([Se]CC)CC
(2)Std. InChI: InChI=1S/C4H10Se2/c1-3-5-6-4-2/h3-4H2,1-2H3
(3)Std. InChIKey: OMAWWKIPXLIPDE-UHFFFAOYSA-N

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
rabbit	LCLo	skin	8600ug/kg (8.6mg/kg)	SKIN AND APPENDAGES (SKIN): "DERMATITIS, OTHER: AFTER SYSTEMIC EXPOSURE"	National Technical Information Service. Vol. OTS0555235,
rat	LCLo	inhalation	2200mg/m³/45M (2200mg/m³)	BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES BEHAVIORAL: EXCITEMENT	National Technical Information Service. Vol. OTS0555235,
rat	LD50	oral	90mg/kg (90mg/kg)	BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) SKIN AND APPENDAGES (SKIN): HAIR: OTHER	National Technical Information Service. Vol. OTS0555235,