Hexamethyldisilathian

Bezeichnung:Hexamethyldisilathian

CAS-Nr3385-94-2

Englisch Name:BIS(TRIMETHYLSILYL) SULFIDE

CBNumberCB1387931

SummenformelC6H18SSi2

Molgewicht178.44

MOL-Datei3385-94-2.mol

Synonyma

Hexamethyldisilathian

Hexamethyldisilathian physikalisch-chemischer Eigenschaften

Siedepunkt	164 °C(lit.)
Dichte	0.846 g/mL at 25 °C(lit.)
Brechungsindex	n20/D 1.4586(lit.)
Flammpunkt	79 °F
storage temp.	Flammables area
Löslichkeit	Miscible with terahydrofuran and toluene.
Aggregatzustand	Liquid
Farbe	Colorless
Wichte	0.851
Wasserlöslichkeit	Soluble in tetrahydrofuran and toluene. Hydrolyzes in water.
Sensitive	Air Sensitive
Hydrolytic Sensitivity	7: reacts slowly with moisture/water
BRN	1740046
Stabilität	store cold
CAS Datenbank	3385-94-2(CAS DataBase Reference)
EPA chemische Informationen	Disilathiane, hexamethyl- (3385-94-2)

Sicherheit

Kennzeichnung gefährlicher	T
R-Sätze:	10-23/24/25
S-Sätze:	36/37/39-45
RIDADR	UN 1993 3/PG 3
WGK Germany	3
F	10-13-21
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29319090

Gefahreninformationscode (GHS)

BIS(TRIMETHYLSILYL) SULFIDE Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R10:Entzündlich.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
clear colorless to slightly yellow liquid
Physikalische Eigenschaften
bp 164°C; d 0.846 g cm?3.
Verwenden
Bis(trimethylsilyl)sulfide is used as a silylating agent in the synthesis of pseudohalides, trifluoroacetate and tetramethylsilyl halides. It is used in the transformation of oxides and chlorides into corresponding sulfides. It is also used in the preparation of dimethyltrisulfane as well as thiones from aldehydes and ketones. Further, it is used as a reducing agent to reduce aromatic nitro compounds to amines.
Verwenden
Hexamethyldisilathiane may be used in the bis-O-demethylation of dimethoxy aromatic compounds.
It may also be used as a sulfur source in the following conversion:
- Amides and lactams to their corresponding sulfur analogs.
- Allyl alcohols to diallyl sulfides.
- Transition metal halides to metal sulfides.
- Aryl iodides to diaryl sulfides.
Verwenden
Bis(trimethylsilyl) sulfide (TMS2S) is used to reduce aromatic nitro groups to amines and the oxides of sulfur, selenium, and tellurium. Conditions for nitro group reduction (eq 1) are forcing; however, yields are good. Reactions of TMS2S with primary aliphatic nitro groups result in the formation of the thiohydroxamic acids (eq 2) which can be isolated or carried further to the nitrile. Secondary alkyl nitro derivatives provide oximes. Sulfoxides are reduced to sulfides, selenoxides to selenides, and telluroxides to tellurides. Conditions are mild and work well on both the aliphatic and aromatic oxides.
läuterung methode
Dissolve it in pet ether (b ca 40o), remove the solvent and distil it. Redistil it under atmospheric pressure of dry N2. It is collected as a colourless liquid which solidifies to a white solid in Dry-ice. On standing for several days it turns yellow possibly due to liberation of sulfur. Store it below 4o under dry N2. [Eaborn J Chem Soc 3077 1950, Beilstein 4 IV 4033.]

BIS(TRIMETHYLSILYL) SULFIDE Upstream-Materialien And Downstream Produkte

Hexamethyldisilathian Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

3385-94-2, BIS(TRIMETHYLSILYL) SULFIDE Verwandte Suche:

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