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Hexamethylcyclotrisiloxan

Hexamethylcyclotrisiloxane

HCID 10914
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Grundinformationen

CAS
541-05-9
Standard-SMILES
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1
InChIKey
HTDJPCNNEPUOOQ-UHFFFAOYSA-N
Summenformel
C6H18O3Si3
Durchschnittliche Molmasse
222,46 g/mol
Monoisotopische Masse
222,05637404

Überblick

Hexamethylcyclotrisiloxane is an organosilicon compound.

Namen und Bezeichner

Bevorzugter Name
Hexamethylcyclotrisiloxane
IUPAC
2,2,4,4,6,6-hexamethyl-1,3,5,2,4,6-trioxatrisilinane
Lokaler Name
Hexamethylcyclotrisiloxan
Englischer Name
Hexamethylcyclotrisiloxane
Summenformel
C6H18O3Si3
Molmasse
222.46

Namen und Synonyme

HEXAMETHYLCYCLOTRISILOXANE541-05-9Cyclotrisiloxane, hexamethyl-Dimethylsiloxane cyclic trimerSDK 10DTXSID6027185DC 246LS 8120EPV75L8O0RDTXCID307185RefChem:786203208-765-4
Weitere Namen anzeigen
CYCLOTRISILOXANEcyclotrisiloxane,hexamethyl-Hexamethylcyclotrisihexamethyl-cyclotrisiloxanDK813DK327CH7260
2,2,4,4,6,6-Hexamethyl-1,3,5,2,4,6-trioxatrisilinaneC6H18O3Si3Simethicone Impurity 2MFCD00005943hexamethyl-1,3,5,2,4,6-trioxatrisilinaneCyclotrisiloxane, 2,2,4,4,6,6-hexamethyl-S09550CCRIS 1326

Datenbank-Bezeichner

CAS
541-05-9
PubChem CID
10914
DTXSID
DTXSID6027185
ChEMBL
CHEMBL3182063
ChEBI
CHEBI:189167
UNII
EPV75L8O0R
EC Number
208-765-4
Nikkaji
J95.632E

Eigenschaften

Berechnete Struktureigenschaften

Polarare Oberfläche (TPSA)
27,7 Ų
H-Brücken-Donoren
0
H-Brücken-Akzeptoren
3
Frei drehbare Bindungen
0
Schwere Atome
12
Formalladung
0
Komplexität
139

Experimentelle und physikochemische Eigenschaften

Chemical ClassesMetals -> Metalloid Compounds (Silicon)
CosmeticsHair conditioning; Emollient; Solvent
SpringerMaterials PropertiesSchoenflies notation
Density1.12 @25 °C
Boiling Point134 °C @760 [mm Hg]
Melting Point64.5 °C
Food Contact SubstancesFCS -> FDA Cumulative Estimated Daily Intake (CEDI)
Physical Description · 2 Einträge

CBI; Liquid

White solid; [EPA - TSCATS] Crystals; [Alfa Aesar MSDS]

Physikochemische Eigenschaften

Schmelzpunkt
50 · 50-64 °C (lit.)
Siedepunkt
134 °C · 134 °C (lit.)
Dichte
1.02 · 1.02
Dampfdichte
1 · 1 (vs air)
Dampfdruck
0.014 · 0.014-671Pa at 24.85-25℃
Flammpunkt
95 °F · 95 °F
storage temp.
Inert atmosphere,Room Temperature
Löslichkeit
soluble in most organic solvents.
Aggregatzustand
solid
Wichte
1.02 · 1.02
Farbe
White to Almost white
Wasserlöslichkeit
may decompose
BRN
1766829 · 1766829
Henry's Law Constant
5.6 · 5.6×10-6 mol/(m3Pa) at 25℃, Mazzoni et al. (1997)
Stabilität
Stable, but moisture sensitive. Incompatible with strong oxidizing agents. Highly flammable.
Major Application
cleaning productscosmeticsenvironmentalfood and beveragespersonal care
InChI
1S/C6H18O3Si3/c1-10(2)7-11(3,4)9-12(5,6)8-10/h1-6H3
InChIKey
HTDJPCNNEPUOOQ-UHFFFAOYSA-N
SMILES
C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1
LogP
-0.38 · -0.38-4.4 at 20-25℃
CAS Datenbank
541 · 541-05-9(CAS DataBase Reference)
NIST chemische Informationen
Hexamethylcyclotrisiloxane(541-05-9)
EPA chemische Informationen
Hexamethylcyclotrisiloxane (541-05-9)

Sicherheit und Regulatorisches

Sicherheitsangaben dienen nur zur Orientierung und ersetzen weder das Sicherheitsdatenblatt (SDB) des Lieferanten noch geltende Vorschriften oder eine fachliche Bewertung.

GHS-Klassifizierung

GHS Classification · 5 Einträge

This chemical does not meet GHS hazard criteria for 58.4% (479 of 820) of all reports.

Danger

H228 (41.6%): Flammable solid [Danger Flammable solids]

P210, P240, P241, P280, and P370+P378 (click each P-code to see the statement)

Aggregated GHS information provided per 820 reports by companies from 10 notifications to the ECHA C&L Inventory.

Gefahrenhinweise

Regulatory Information · 4 Einträge

Chemical: Cyclotrisiloxane, hexamethyl-

Cyclotrisiloxane, 2,2,4,4,6,6-hexamethyl- is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Cyclotrisiloxane, 2,2,4,4,6,6-hexamethyl- are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)

REACH registered substance: Hexamethylcyclotrisiloxane (EC: 208-765-4)

Cyclotrisiloxane, hexamethyl-: Does not have an individual approval but may be used as a component in a product covered by a group standard. It is not approved for use as a chemical in its own right.

Other Safety InformationIMAP assessments - Cyclic volatile methyl siloxanes: Environment tier II assessment
Hazards Summary · 1 Eintrag

A 28-day inhalation study of rats produced reduced motor activity, decreased seminal vesicle weight, and decreased litter size and number of implantation sites at 2,500 ppm; [EPA - TSCATS] A skin and strong eye irritant; [Alfa Aesar MSDS] See Octamethylcyclotetrasiloxane.

Hazard Classes and CategoriesFlam. Sol. 1 (41.6%)

Sicherheit und Schutzausrüstung

Protective Action Criteria (PAC) · 3 Einträge

360 [mg/m3]

530 [mg/m3]

1600 [mg/m3]

Sicherheitsdaten

wgk
3
tsca
TSCA listed
ridadr
UN 1325 4.1/PG 2
hs_code
29319090
risk_code
11-36/37/38
hazard_code
F,Xi
safety_code
26
hazard_class
4.1
packing_group
II
Speicherklasse
4.1B - Flammable solid hazardous materials
Hazard Classifications
Flam. Sol. 1

Chemie und Industrie

Verwendung und Herstellung

U.S. Production2023: 1,000,000 - <5,000,000 lb
Industry UsesMonomers
Household ProductsInformation on 2 consumer products that contain Hexamethylcyclotrisiloxane in the following categories is provided:
Use ClassificationCosmetics -> Hair conditioning; Emollient; Solvent
General Manufacturing Information · 2 Einträge

All Other Chemical Product and Preparation Manufacturing

Cyclotrisiloxane, 2,2,4,4,6,6-hexamethyl-: ACTIVE

Anwendungen · 1 Eintrag

VerwendenHexamethylcyclotrisiloxane, is the simplest member of a series of cyclic oligodimethylsiloxanes, primarily used as synthetic equivalents for the reactive interme- diate dimethylsilanone. It is one of the main raw materials for silicone products. It is widely used in aviation, military industry, medicine and petrochemicals etc. Hexamethylcyclotrisiloxane undergoes ring-opening anionic polymerization reactions, suggesting use in polymer synthesis. It is also suggested for the treatment of powders and fillers to render them hydrophobic. Hexamethylcyclotrisiloxane mainly used for products of methyl vinyl silicone rubber. It’s also the important raw materials for synthesizing other high polymers. It may be used as an effective trapping reagent for a variety of short-lived intermediates, including silanones and silyenes. Hexamethylcyclotrisiloxane has many unique characteristics.The reaction of It is more active, can be easily and quickly polymerized under lower temperature and simple catalysts. may be used to synthesize many kinds of organic silicone products, which have better stability, better insulation properties and better water resistance. may be used to synthesize silicon rubber, which may has better elasticity, better abrasive resistance, and better corrosive resistance. may be used to synthesize silicone oil, which may has lower freezing point and less surface tension, it is slightly affected by temperature. Hexamethylcyclotrisiloxane is flammable. Use and store with all precautions required for Flammable Materials. Care should be exercised in handling GP-685 to prevent contact with skin or eyes. Wear safety glasses with side shields and rubber gloves when handling.

Vor- und nachgelagerte Produkte

Vorgelagerte Rohstoffe

TetradecamethylhexasiloxanDecamethyltetrasiloxanOctamethylcyclotetrasiloxanDichlor(dimethyl)silanChlortrimethylsilan

Nachgelagerte Produkte

Tetradecamethylcycloheptasiloxan1,3-Bis(chloromethyl)-1,1,3,3-tetramethyldisiloxaneChloromethyl methyl sulfideHexamethyldisiloxan

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