Octamethylcyclotetrasiloxane
SIAL/43883 - analytical standard
CAS Number: 556-67-2
Empirical Formula (Hill Notation): C8H24O4Si4
Molecular Weight: 296.62
EC Number: 209-136-7
MDL Number: MFCD00003269
Linear Formula: [-Si(CH3)2O-]4
Product Type: Chemical
application(s) | cleaning products cosmetics environmental food and beverages personal care |
assay | ≥97.0% (GC) |
bp | 175-176 °C (lit.) |
density | 0.956 g/mL at 25 °C (lit.) |
form | liquid |
format | neat |
grade | analytical standard |
InChI | 1S/C8H24O4Si4/c1-13(2)9-1 |
InChI key | HMMGMWAXVFQUOA-UHFFFAOYSA |
mp | 17-18 °C (lit.) |
Quality Level | 100 ![]() |
refractive index | n |
shelf life | limited shelf life, expiry date on the label |
SMILES string | C[Si]1(C)O[Si](C)(C)O[Si] |
technique(s) | gas chromatography (GC): suitable |
HPLC: suitable | |
vapor density | 1 (vs air) |
Application: | Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support. |
Symbol | ![]() ![]() |
Signal word | Warning |
Hazard statements | H226 - H361f - H413 |
Precautionary statements | P201 - P202 - P210 - P233 - P273 - P308 + P313 |
Hazard Codes | Xn |
Risk Statements | 10-53-62 |
Safety Statements | 36/37-46-51-61 |
RIDADR | UN 1993C 3 / PGIII |
WGK Germany | WGK 3 |
Flash Point(F) | 123.8 °F - closed cup |
Flash Point(C) | 51 °C - closed cup |
Purity | ≥97.0% (GC) |
bp | 175-176 °C (lit.) |
mp | 17-18 °C (lit.) |
Density | 0.956 g/mL at 25 °C (lit.) |
Refractive Index | n |
UNSPSC | 77101502 |