469300

Hexamethyldisiloxane

viscosity 0.65 cSt (25 °C)

• Synonym(s): Poly(dimethylsiloxane), HMDSO
• Linear Formula: (CH₃)₃SiOSi(CH₃)₃
• CAS Number: 107-46-0
• Molecular Weight: 162.38
• Beilstein: 1736258
• EC Number: 203-492-7
• MDL number: MFCD00008265
• PubChem Substance ID: 24870583
• NACRES: NA.23

Properties

• Quality Level: 100
• vapor density: >1 (vs air)
• refractive index: n20/D 1.377 (lit.)
• viscosity: 0.65 cSt(25 °C)
• bp: 101 °C (lit.)
• mp: −59 °C (lit.)
• density: 0.764 g/mL at 20 °C (lit.)
• SMILES string: C[Si](C)(C)O[Si](C)(C)C
• InChI: 1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3
• InChI key: UQEAIHBTYFGYIE-UHFFFAOYSA-N

Safety Information

• Pictograms: GHS02,GHS09
• Signal Word: Danger
• Hazard Statements: H225 - H410
• Precautionary Statements: P210 - P273
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Flam. Liq. 2
• Storage Class Code: 3 - Flammable liquids
• WGK: WGK 2
• Flash Point(F): 21.2 °F - closed cup
• Flash Point(C): -6 °C - closed cup
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves