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Tetramethylpyrazine
Cc1c(nc(c(n1)C)C)C
InChI=1S/C8H12N2/c1-5-6(2)10-8(4)7(3)9-5/h1-4H3
FINHMKGKINIASC-UHFFFAOYSA-N
CSID:13658, http://www.chemspider.com/Chemical-Structure.13658.html (accessed 08:48, Nov 28, 2024)
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) = 2.13 Log Kow (Exper. database match) = 1.28 Exper. Ref: Yamagami,C et al. (1991) Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42): Boiling Pt (deg C): 209.39 (Adapted Stein & Brown method) Melting Pt (deg C): 34.91 (Mean or Weighted MP) VP(mm Hg,25 deg C): 0.147 (Modified Grain method) MP (exp database): 84-86 deg C BP (exp database): 190 deg C Subcooled liquid VP: 0.539 mm Hg (25 deg C, Mod-Grain method) Water Solubility Estimate from Log Kow (WSKOW v1.41): Water Solubility at 25 deg C (mg/L): 7007 log Kow used: 1.28 (expkow database) no-melting pt equation used Water Sol Estimate from Fragments: Wat Sol (v1.01 est) = 7311.8 mg/L ECOSAR Class Program (ECOSAR v0.99h): Class(es) found: Neutral Organics Henrys Law Constant (25 deg C) [HENRYWIN v3.10]: Bond Method : 4.33E-006 atm-m3/mole Group Method: 2.45E-008 atm-m3/mole Henrys LC [VP/WSol estimate using EPI values]: 3.760E-006 atm-m3/mole Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]: Log Kow used: 1.28 (exp database) Log Kaw used: -3.752 (HenryWin est) Log Koa (KOAWIN v1.10 estimate): 5.032 Log Koa (experimental database): None Probability of Rapid Biodegradation (BIOWIN v4.10): Biowin1 (Linear Model) : 0.9014 Biowin2 (Non-Linear Model) : 0.9672 Expert Survey Biodegradation Results: Biowin3 (Ultimate Survey Model): 2.5988 (weeks-months) Biowin4 (Primary Survey Model) : 3.3771 (days-weeks ) MITI Biodegradation Probability: Biowin5 (MITI Linear Model) : 0.4728 Biowin6 (MITI Non-Linear Model): 0.4558 Anaerobic Biodegradation Probability: Biowin7 (Anaerobic Linear Model): -0.6510 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): 71.9 Pa (0.539 mm Hg) Log Koa (Koawin est ): 5.032 Kp (particle/gas partition coef. (m3/ug)): Mackay model : 4.17E-008 Octanol/air (Koa) model: 2.64E-008 Fraction sorbed to airborne particulates (phi): Junge-Pankow model : 1.51E-006 Mackay model : 3.34E-006 Octanol/air (Koa) model: 2.11E-006 Atmospheric Oxidation (25 deg C) [AopWin v1.92]: Hydroxyl Radicals Reaction: OVERALL OH Rate Constant = 2.8995 E-12 cm3/molecule-sec Half-Life = 3.689 Days (12-hr day; 1.5E6 OH/cm3) Half-Life = 44.266 Hrs Ozone Reaction: No Ozone Reaction Estimation Fraction sorbed to airborne particulates (phi): 2.42E-006 (Junge,Mackay) Note: the sorbed fraction may be resistant to atmospheric oxidation Soil Adsorption Coefficient (PCKOCWIN v1.66): Koc : 128.6 Log Koc: 2.109 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 = 0.286 (BCF = 1.93) log Kow used: 1.28 (expkow database) Volatilization from Water: Henry LC: 4.33E-006 atm-m3/mole (estimated by Bond SAR Method) Half-Life from Model River: 159 hours (6.625 days) Half-Life from Model Lake : 1832 hours (76.35 days) Removal In Wastewater Treatment: Total removal: 2.16 percent Total biodegradation: 0.09 percent Total sludge adsorption: 1.83 percent Total to Air: 0.24 percent (using 10000 hr Bio P,A,S) Level III Fugacity Model: Mass Amount Half-Life Emissions (percent) (hr) (kg/hr) Air 3.23 88.5 1000 Water 44.5 900 1000 Soil 52.2 1.8e+003 1000 Sediment 0.102 8.1e+003 0 Persistence Time: 639 hr
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