Product Name

  • Name

    quadrosilan

  • EINECS 251-406-1
  • CAS No. 33204-76-1
  • Density 1.06 g/cm3
  • Solubility
  • Melting Point 41ºC
  • Formula C18H28 O4 Si4
  • Boiling Point 353.9 ºC at 760 mmHg
  • Molecular Weight 420.82
  • Flash Point 146 ºC
  • Transport Information
  • Appearance
  • Safety
  • Risk Codes
  • Molecular Structure Molecular Structure of 33204-76-1 (quadrosilan)
  • Hazard Symbols
  • Synonyms 2,6-cis-Diphenylhexamethylcyclotetrasiloxane;Cisobitan; KABI 1774; Quadrosilan; cis-2,6-Diphenylhexamethylcyclotetrasiloxane
  • PSA 36.92000
  • LogP 3.42840

Cisobitan Chemical Properties

Molecular Structure of Cisobitan (CAS NO. 33204-76-1):

EINECS: 251-406-1
IUPAC Name: 2,2,4,6,6,8-Hexamethyl-4,8-diphenyl-1,3,5,7,2,4,6,8-tetraoxatetrasilocane
Molecular Formula: C18H28O4Si4
Molecular Weight: 420.754520 g/mol
H-Bond Donor: 0
H-Bond Acceptor: 4
Canonical SMILES: C[Si]1(O[Si](O[Si](O[Si](O1)(C)C2=CC=CC=C2)(C)C)(C)C3=CC=CC=C3)C
InChI: InChI=1S/C18H28O4Si4/c1-23(2)19-25(5,17-13-9-7-10-14-17)21-24(3,4)22-26(6,20-23)18-15-11-8-12-16-18/h7-16H,1-6H3
InChIKey: ZTQZMPQJXABFNC-UHFFFAOYSA-N
Index of Refraction: 1.513
Molar Refractivity: 119.19 cm3
Molar Volume: 396.1 cm3
Surface Tension: 27.8 dyne/cm
Density: 1.06 g/cm3
Flash Point: 146 °C
Enthalpy of Vaporization: 57.52 kJ/mol
Boiling Point: 353.9 °C at 760 mmHg
Vapour Pressure: 7.1E-05 mmHg at 25 °C
Water Solubility of Cisobitan (CAS NO. 33204-76-1): 8.301e-005 mg/L at 25 °C

Cisobitan Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral > 5gm/kg (5000mg/kg)   Acta Pharmacologica et Toxicologica, Supplementun. Vol. 36(3), Pg. 93, 1975.
rat LD50 oral > 5gm/kg (5000mg/kg)   Acta Pharmacologica et Toxicologica, Supplementun. Vol. 36(3), Pg. 93, 1975.

Cisobitan Safety Profile

Experimental reproductive effects. When heated to decomposition it emits acrid smoke and fumes.

Cisobitan Specification

  Cisobitan with cas registry number of 33204-76-1 is also knowns as 2,6-cis-Diphenylhexamethylcyclotetrasiloxane ; Cyclic 2,6-cis-diphenylhexamethylcyclotetrasiloxane ; Cyclotetrasiloxane, 2,2,4,6,6,8-hexamethyl-4,8-diphenyl-, cis- ; Cyclotetrasiloxane, 2,6-diphenylhexamethyl-, Z- ; Cyclotetrasiloxane, 2,6-diphenyl-2,4,4,6,8,8-hexamethyl-, (Z)- ; KABI 1774 ; Quadrosilan [INN:BAN] ; Quadrosilan ; Quadrosilane ; Quadrosilane [INN-French] ; Quadrosilanum ; Quadrosilanum [INN-Latin] ; UNII-C5KT601WPM ; cis-2,6-Diphenyl-2,4,4,6,8,8-hexamethylcyclotetrasiloxane ; cis-2,2,4,6,6,8-Hexamethyl-4,8-diphenylcyclotetrasiloxane .

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