1.0 2016-05-19 03:00:09 UTC 2026-08-23 08:04:02 UTC Hexamethyldisiloxane SmallMolecule Hexamethyldisiloxane is a compound with the formula C6H18OSi2 and an average molecular weight of 162.38 g/mol. Hexamethyldisiloxane belongs to the organosilicon compounds, a subclass of organometalloid compounds within the organic compounds. In industrial applications, it serves as a defoamer as well as a softener and conditioner. The compound has been identified in 48 recorded sources across various sectors. Within electrical and electronic equipment, it is found in antennas, amplifiers, adjustable resistors, coils, auxiliary devices, and 13 other components. It is present in household cleaning and consumer products, including soap dispensers, bleaching agents, tobacco smoke filters, cigar cigarettes, and other smoking requisites. In food and food processing, it is associated with the processing of meats, the preparation of malt, fermentation processes for beer, and the preparation of wine or sparkling wine. Environmental sources include aquatic systems and sediments such as seawater, freshwater, groundwater, and surface water, as well as drinking water and water supply sources including bottled water, tap water, and desalinated water. Additionally, it is found in wastewater, sanitation, and biosolids, including wastewater treatment effluent, mine wastewater, industrial wastewater, and unspecified wastewater. Five more sectors have also been recorded as sources. Recorded exposure routes for this compound include oral, inhalation, and touch. PMT Dimethicone Disiloxane, hexamethyl- trimethyl[(trimethylsilyl)oxy]silane C6H18OSi2 162.3775 162.089618264 trimethyl[(trimethylsilyl)oxy]silane hexamethyldisiloxane 107-46-0 C[Si](C)(C)O[Si](C)(C)C InChI=1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3 UQEAIHBTYFGYIE-UHFFFAOYSA-N Organic compounds Organometallic compounds Organometalloid compounds Organosilicon compounds Disiloxanes Hydrocarbon derivatives Organic metalloid salts Organic oxygen compounds Trialkylheterosilanes Aliphatic acyclic compound Disiloxane Hydrocarbon derivative Organic metalloid salt Organic oxygen compound Organic salt Organoheterosilane Trialkylheterosilane Aliphatic acyclic compounds organosiloxane Detected and Not Quantified Dimethicone Drug Metabolism Action Pathway SMP0144548 logp 2.89 ALOGPS logs -2.60 ALOGPS solubility 4.03e-01 g/l ALOGPS logp 3.03 ChemAxon pka_strongest_basic -3.7 ChemAxon iupac trimethyl[(trimethylsilyl)oxy]silane ChemAxon average_mass 162.3775 ChemAxon mono_mass 162.089618264 ChemAxon smiles C[Si](C)(C)O[Si](C)(C)C ChemAxon formula C6H18OSi2 ChemAxon inchi InChI=1S/C6H18OSi2/c1-8(2,3)7-9(4,5)6/h1-6H3 ChemAxon inchikey UQEAIHBTYFGYIE-UHFFFAOYSA-N ChemAxon polar_surface_area 9.23 ChemAxon refractivity 36.03 ChemAxon polarizability 17.63 ChemAxon rotatable_bond_count 2 ChemAxon acceptor_count 1 ChemAxon donor_count 0 ChemAxon physiological_charge 0 ChemAxon formal_charge 0 ChemAxon #<HealthEffect::ActiveRecord_Associations_CollectionProxy:0x00007f72263f96a8> 24764