Hexamethyldisiloxane

Base Information

• Chemical Name: Hexamethyldisiloxane
• CAS No.: 9006-65-9
• Deprecated CAS: 864719-97-1,1463472-97-0,1650537-56-6
• Molecular Formula: Unspecified
• Molecular Weight: 162.37800
• European Community (EC) Number: 203-492-7
• NSC Number: 43346
• UNII: D7M4659BPU
• DSSTox Substance ID: DTXSID4026769
• Nikkaji Number: J3.247F
• Wikipedia: Hexamethyldisiloxane
• Wikidata: Q419440
• NCI Thesaurus Code: C92605
• RXCUI: 1311540
• ChEMBL ID: CHEMBL3184090
• Mol file: 9006-65-9.mol

Synonyms:hexamethyldisiloxane

Chemical Property of Hexamethyldisiloxane

Chemical Property:

• Appearance/Colour: Transparent Viscid Liquid
• Vapor Pressure: 5 mm Hg ( 20 °C)
• Melting Point: -35°C
• Refractive Index: n20/D 1.406
• Boiling Point: 155-220°C
• Flash Point: 121 °C
• PSA: 9.23000
• Density: 1 g/mL at 20 °C
• LogP: 2.67280
• Storage Temp.: Refrigerator
• Solubility.: Practically insoluble in water, very slightly soluble or practically insoluble in anhydrous ethanol, miscible with ethyl acetate, with methyl ethyl ketone and with toluene.
• Water Solubility.: INSOLUBLE
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 1
• Rotatable Bond Count: 2
• Exact Mass: 162.08961826
• Heavy Atom Count: 9
• Complexity: 76.2

Purity/Quality:

98%, ^*data from raw suppliers

Dimethicone ^*data from reagent suppliers

Safty Information:

• Pictogram(s): 36/37/38:
• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 24/25-26

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Silicon)
• Canonical SMILES: C[Si](C)(C)O[Si](C)(C)C
• Recent ClinicalTrials: Parallel Group Trial to Evaluate the Efficacy and Safety of Loion? Compared to 10% Salicylic Acid in Patients With Chronic Psoriasis Capitis
• Recent NIPH Clinical Trials: Efficacy and safety of a Dimethicone lotion for head lice infestations.
• Uses: A silicone oil consisting of a mixture of fully methylated linear siloxane polymers end-blocking with trimethylsiloxy units. Commonly used in skin and hair products. dimethicone is a form of silicone used to give products lubricity, slip, and good feel. It can also serve as a formulation defoamer and help reduce the feeling of greasiness that some creams leave on the skin immediately upon application. In addition, dimethicone is reported to protect the skin against moisture loss when used in larger quantities. It improves product flow and spreadability. In combination with other ingredients, dimethicone becomes a good waterproofing material for sunscreen emulsions, and helps reduce the greasiness often seen in high-SPF preparations.
• Indications: Silicone (dimethicone) ointments are excellent water-protective agents because they have an extremely low surface tension and penetrate crevices in the skin to form a plastic-like barrier. Further, they are nontoxic, inert, stable, and water repellent. As such, they are useful as barrier creams in industry or wherever constant or frequent exposure to aqueous compounds is a problem. They will not, however, protect well against solvents, oils, or dusts.