Hexamethyldisilane
C[Si](C)(C)[Si](C)(C)C
InChI=1S/C6H18Si2/c1-7(2,3)8(4,5)6/h1-6H3
NEXSMEBSBIABKL-UHFFFAOYSA-N
CSID:66675, http://www.chemspider.com/Chemical-Structure.66675.html (accessed 00:37, Dec 7, 2023)
Validated by Experts, Validated by Users, Non-Validated, Removed by Users
Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00
Predicted data is generated using the US Environmental Protection Agency�s EPISuite
Log Octanol-Water Partition Coef (SRC): Log Kow (KOWWIN v1.67 estimate) = 4.11 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 61.67 (Adapted Stein & Brown method) Melting Pt (deg C): -97.82 (Mean or Weighted MP) VP(mm Hg,25 deg C): 20.8 (Mean VP of Antoine & Grain methods) MP (exp database): 13.5 deg C BP (exp database): 113.5 deg C Water Solubility Estimate from Log Kow (WSKOW v1.41): Water Solubility at 25 deg C (mg/L): 24.14 log Kow used: 4.11 (estimated) no-melting pt equation used Water Sol Estimate from Fragments: Wat Sol (v1.01 est) = 0.052129 mg/L ECOSAR Class Program (ECOSAR v0.99h): Class(es) found: Neutral Organics Henrys Law Constant (25 deg C) [HENRYWIN v3.10]: Bond Method : Incomplete Group Method: Incomplete Henrys LC [VP/WSol estimate using EPI values]: 1.660E-001 atm-m3/mole Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]: Can Not Estimate (can not calculate HenryLC) Probability of Rapid Biodegradation (BIOWIN v4.10): Biowin1 (Linear Model) : 0.6779 Biowin2 (Non-Linear Model) : 0.7171 Expert Survey Biodegradation Results: Biowin3 (Ultimate Survey Model): 2.8757 (weeks ) Biowin4 (Primary Survey Model) : 3.6365 (days-weeks ) MITI Biodegradation Probability: Biowin5 (MITI Linear Model) : 0.2791 Biowin6 (MITI Non-Linear Model): 0.1703 Anaerobic Biodegradation Probability: Biowin7 (Anaerobic Linear Model): 0.3587 Ready Biodegradability Prediction: NO Hydrocarbon Biodegradation (BioHCwin v1.01): Structure incompatible with current estimation method! Sorption to aerosols (25 Dec C)[AEROWIN v1.00]: Vapor pressure (liquid/subcooled): 2.61E+003 Pa (19.6 mm Hg) Log Koa (): not available Kp (particle/gas partition coef. (m3/ug)): Mackay model : 1.15E-009 Octanol/air (Koa) model: not available Fraction sorbed to airborne particulates (phi): Junge-Pankow model : 4.15E-008 Mackay model : 9.18E-008 Octanol/air (Koa) model: not available Atmospheric Oxidation (25 deg C) [AopWin v1.92]: Hydroxyl Radicals Reaction: OVERALL OH Rate Constant = 0.8976 E-12 cm3/molecule-sec Half-Life = 11.916 Days (12-hr day; 1.5E6 OH/cm3) Ozone Reaction: No Ozone Reaction Estimation Fraction sorbed to airborne particulates (phi): 6.67E-008 (Junge,Mackay) Note: the sorbed fraction may be resistant to atmospheric oxidation Soil Adsorption Coefficient (PCKOCWIN v1.66): Koc : 224.7 Log Koc: 2.352 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]: Rate constants can NOT be estimated for this structure! Bioaccumulation Estimates from Log Kow (BCFWIN v2.17): Log BCF from regression-based method = 2.467 (BCF = 293.4) log Kow used: 4.11 (estimated) Volatilization from Water: Henry LC: 0.166 atm-m3/mole (calculated from VP/WS) Half-Life from Model River: 1.239 hours Half-Life from Model Lake : 115 hours (4.79 days) Removal In Wastewater Treatment (recommended maximum 95%): Total removal: 98.71 percent Total biodegradation: 0.08 percent Total sludge adsorption: 20.66 percent Total to Air: 77.97 percent (using 10000 hr Bio P,A,S) Level III Fugacity Model: Mass Amount Half-Life Emissions (percent) (hr) (kg/hr) Air 33.1 286 1000 Water 32.9 360 1000 Soil 28.8 720 1000 Sediment 5.32 3.24e+003 0 Persistence Time: 187 hr
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