octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane

• ChemBase ID: 110305
• Molecular Formular: C8H24O4Si4
• Molecular Mass: 296.61576
• Monoisotopic Mass: 296.07516538
• SMILES: C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1
• Canonical SMILES: C[Si]1(C)O[Si](C)(C)O[Si](O[Si](O1)(C)C)(C)C
• InChI: InChI=1S/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
• InChIKey: HMMGMWAXVFQUOA-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: octamethyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
• IUPAC Traditional name: octamethylcyclotetrasiloxane
• Synonyms: OCTAMETHYLCYCLOTETRASILOXANE; Octamethylcyclotetrasiloxane; 八甲基环四硅氧烷

Database IDs

• CAS Number: 556-67-2
• EC Number: 209-136-7
• MDL Number: MFCD00003269
• Beilstein Number: 1787074
• Merck Index: 146747
• PubChem SID: 24886726; 162095761; 24853994
• PubChem CID: 11169

CALCULATED PROPERTIES

• H Acceptors: 4
• H Donor: 0
• LogD (pH = 5.5): 0.7664
• LogD (pH = 7.4): 0.7664
• Log P: 0.7664
• Molar Refractivity: 52.9664 cm^3
• Polarizability: 29.34506 Å^3
• Polar Surface Area: 36.92 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: liquid
• Melting Point: 17.5°C; 17-18 °C(lit.); 17-18°C
• Boiling Point: 175°C; 175-176 °C(lit.); 175-176°C
• Flash Point: 131 °F; 55 °C; 56°C(132°F)
• Density: 0.956; 0.956 g/mL at 25 °C(lit.); 0.96 g/ml
• Refractive Index: 1.3960; n20/D 1.396; n20/D 1.396(lit.)
• Vapor Density: 1 (vs air)

Safety Information

• Storage Warning: Moisture Sensitive
• RTECS: GZ4397000
• European Hazard Symbols: Flammable (F); X; Harmful (Xn)
• UN Number: 1993; UN1993
• German water hazard class: 3
• Hazard Class: 3
• Packing Group: 3; III
• Risk Statements: 10-53-62; 53-62; 62-53; R:10-22-27
• Safety Statements: 36/37-46-51-61; S:9-16-29-36/37/39
• TSCA Listed: 是
• GHS Pictograms: GHS02; GHS08
• GHS Signal Word: Warning
• GHS Hazard statements: H226-H361f-H413; H226-H361-H413
• GHS Precautionary statements: P210-P241-P280-P303+P361+P353-P405-P501A; P281
• Personal Protective Equipment: Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
• RID/ADR: UN 1993 3/PG 3
• Storage Temperature: 2-8°C

Product Information

• Purity: ≥99.0% (GC); 98%
• Grade: purum
• Linear Formula: [-Si(CH3)2O-]4

DETAILS

MP Biomedicals - 05214501

MP Biomedicals Rare Chemical collection

Sigma Aldrich - 235695

Packaging
25, 100 g in glass bottle

Sigma Aldrich - 74811

Other Notes
Reagent used for deactivating the surface of glass capillary columns in GC1,2

REFERENCES

• Useful for deactivating glass GC capillary columns.