CAS No: 556-67-2, Chemical Name: Octamethyl cyclotetrasiloxane
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556-67-2 Octamethyl cyclotetrasiloxane

product Name Octamethyl cyclotetrasiloxane
Synonyms Octamethyl cyclotetrasilazane; octaphenyl silsesquioxane; Octamethylcyclotetrasiloxane; 2,2,4,4,6,6,8,8-octamethyl-1,3,5,7,2,4,6,8-tetroxatetrasilocane; D4
Molecular Formula C8H24O4Si4
Molecular Weight 296.6158
InChI InChI=1/C8H24O4Si4/c1-13(2)9-14(3,4)11-16(7,8)12-15(5,6)10-13/h1-8H3
CAS Registry Number 556-67-2
EINECS 209-136-7
Molecular Structure 556-67-2 Octamethyl cyclotetrasiloxane
Density 0.95g/cm3
Melting point 17-18℃
Boiling point 175°C at 760 mmHg
Refractive index 1.423
Flash point 63.2°C
Water solubility INSOLUBLE
Vapour Pressur 1.57mmHg at 25°C
Hazard Symbols  Xn:Harmful;
Risk Codes R53:;
R62:;
Safety Description S36/37:;
S46:;
S51:;
S61:;