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  • 8.18414 - 1,1,3,3-Tetramethyldisiloxane

8.18414 EMD Millipore


1,1,3,3-Tetramethyldisiloxane for synthesis. CAS 3277-26-7, chemical formula ((CH₃)₂SiH)₂O., for synthesis

  • CAS Number 3277-26-7

  • Linear Formula C₄H₁₄OSi₂

  • Molecular Weight 134.33 g/mol

  •  EC Number 221-906-4



packaging   25 ml in Glass bottle (8184140025)
bp   70 - 71 °C (1013 hPa)
expl. lim.     0.8 - 62.9 %(V)
vapor pressure   250 hPa (20 °C)
density   0.76 g/cm3 (20 °C)
flash point   -26 °C
autoignition temp.   240 °C
mp   -78 °C
shipped in   ambient
storage temp.   Store at <= 20°C.
specifications   Assay (GC, area%): ≥ 97.0 % (a/a)
  Density (d 20 °C/ 4 °C): 0.757 - 0.759
  Identity (IR): passes test

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Safety Information

HS Code 
2931 90 00
Hazard Statement(s) 
H225: Highly flammable liquid and vapour.
Precautionary Statement(s) 
P210: Keep away from heat/sparks/open flames/hot surfaces. No smoking.
P403 + P235: Store in a well-ventilated place. Keep cool.
Storage class 
3 Flammable liquids
WGK 2 water endangering
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Hazard Pictogram(s) 
GHS02  GHS02
Hazard Symbols 
Flammable  Flammable
Declaration (railroad and road) ADR, RID 
UN 1993 , 3, II
Declaration (transport by air) IATA-DGR 
UN 1993 , 3, II
Declaration (transport by sea) IMDG-Code 
UN 1993 , 3, II
Categories of danger 
highly flammable
R Phrase 
R 11
Highly flammable.
S Phrase 
S 7/9-16
Keep container tightly closed and in a well-ventilated place.Keep away from sources of ignition - No smoking.
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