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CAS Num: 010024-97-2
SMILES : N#N=O
CHEM : Nitrous oxide
MOL FOR: N2 O1
MOL WT : 44.01
------------------------------ EPI SUMMARY (v4.00) --------------------------
Physical Property Inputs:
Water Solubility (mg/L): ------
Vapor Pressure (mm Hg) : ------
Henry LC (atm-m3/mole) : ------
Log Kow (octanol-water): ------
Boiling Point (deg C) : ------
Melting Point (deg C) : ------
Log Octanol-Water Partition Coef (SRC):
*** WARNING: Inorganic Compound (Outside Estimation Domain)
Log Kow (KOWWIN v1.67 estimate) = 1.38
Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.43):
*** WARNING: Inorganic Compound (Outside Estimate Domain) ***
*** WARNING: Estimations NOT VALID ***
Boiling Pt (deg C): 624.45 (Adapted Stein & Brown method)
Melting Pt (deg C): 270.73 (Mean or Weighted MP)
VP(mm Hg,25 deg C): 2.39E+004 (Mean VP of Antoine & Grain methods)
VP (Pa, 25 deg C) : 3.18E+006 (Mean VP of Antoine & Grain methods)
MP (exp database): -90.81 deg C
BP (exp database): -88.46 deg C
VP (exp database): 4.29E+04 mm Hg (5.72E+006 Pa) at 25 deg C
Water Solubility Estimate from Log Kow (WSKOW v1.41):
*** WARNING: Inorganic Compound (Outside Estimation Domain)**
Water Solubility at 25 deg C (mg/L): 8738
log Kow used: 1.38 (estimated)
no-melting pt equation used
Water Sol Estimate from Fragments:
*** WARNING: Inorganic Compound (Outside Estimation Domain)***
*** WARNING: Wat Sol Estimation NOT Valid ***
Wat Sol (v1.01 est) = 27094 mg/L
ECOSAR Class Program (ECOSAR v1.00):
Class(es) found:
Aliphatic Amines
Diazoniums
Henrys Law Constant (25 deg C) [HENRYWIN v3.20]:
*** WARNING: Inorganic Compound (Outside Estimation Domain) **
*** WARNING: Estimation NOT VALID **
Bond Method : 1.56E-003 atm-m3/mole (1.58E+002 Pa-m3/mole)
Group Method: Incomplete
For Henry LC Comparison Purposes:
User-Entered Henry LC: not entered
Henrys LC [via VP/WSol estimate using User-Entered or Estimated values]:
HLC: 5.037E-003 atm-m3/mole (5.103E+002 Pa-m3/mole)
VP: 2.39E+004 mm Hg (source: MPBPVP)
WS: 8.74E+003 mg/L (source: WSKOWWIN)
Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
*** WARNING: Inorganic Compound (Outside Estimation Domain)**
*** WARNING: Estimation NOT VALID ***
Log Kow used: 1.38 (KowWin est)
Log Kaw used: -1.195 (HenryWin est)
Log Koa (KOAWIN v1.10 estimate): 2.575
Log Koa (experimental database): None
Probability of Rapid Biodegradation (BIOWIN v4.10):
*** WARNING: Inorganic Compound (Outside Estimation Domain)**
*** WARNING: Estimation NOT VALID ***
Biowin1 (Linear Model) : 0.7266
Biowin2 (Non-Linear Model) : 0.9156
Expert Survey Biodegradation Results:
Biowin3 (Ultimate Survey Model): 3.1019 (weeks )
Biowin4 (Primary Survey Model) : 3.7842 (days )
MITI Biodegradation Probability:
Biowin5 (MITI Linear Model) : 0.5719
Biowin6 (MITI Non-Linear Model): 0.8191
Anaerobic Biodegradation Probability:
Biowin7 (Anaerobic Linear Model): 0.3984
Ready Biodegradability Prediction: YES
Hydrocarbon Biodegradation (BioHCwin v1.01):
Structure incompatible with current estimation method!
Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
Vapor pressure (liquid/subcooled): 5.72E+006 Pa (4.29E+004 mm Hg)
Log Koa (Koawin est ): 2.575
Kp (particle/gas partition coef. (m3/ug)):
Mackay model : 5.24E-013
Octanol/air (Koa) model: 9.23E-011
Fraction sorbed to airborne particulates (phi):
Junge-Pankow model : 1.89E-011
Mackay model : 4.2E-011
Octanol/air (Koa) model: 7.38E-009
Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
*** WARNING: Inorganic Compound (Outside Estimation Domain)***
Hydroxyl Radicals Reaction:
OVERALL OH Rate Constant = 0.0000 E-12 cm3/molecule-sec
Half-Life = -------
Ozone Reaction:
No Ozone Reaction Estimation
Fraction sorbed to airborne particulates (phi):
3.05E-011 (Junge-Pankow, Mackay avg)
7.38E-009 (Koa method)
Note: the sorbed fraction may be resistant to atmospheric oxidation
Soil Adsorption Coefficient (KOCWIN v2.00):
*** WARNING: Inorganic Coumpound (Outside Estimation Domain) **
*** WARNING: Estimation NOT VALID **
Koc : 13.22 L/kg (MCI method)
Log Koc: 1.121 (MCI method)
Koc : 15.75 L/kg (Kow method)
Log Koc: 1.197 (Kow method)
Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v2.00]:
Rate constants can NOT be estimated for this structure!
Bioaccumulation Estimates (BCFBAF v3.00):
Log BCF from regression-based method = 0.577 (BCF = 3.775 L/kg wet-wt)
Log Biotransformation Half-life (HL) = -1.2261 days (HL = 0.05942 days)
Log BCF Arnot-Gobas method (upper trophic) = 0.411 (BCF = 2.576)
Log BAF Arnot-Gobas method (upper trophic) = 0.411 (BAF = 2.576)
log Kow used: 1.38 (estimated)
Volatilization from Water:
Henry LC: 0.00156 atm-m3/mole (estimated by Bond SAR Method)
Half-Life from Model River: 0.9259 hours (55.56 min)
Half-Life from Model Lake : 65.73 hours (2.739 days)
Removal In Wastewater Treatment:
Total removal: 39.92 percent
Total biodegradation: 0.06 percent
Total sludge adsorption: 1.25 percent
Total to Air: 38.61 percent
(using 10000 hr Bio P,A,S)
Level III Fugacity Model:
Mass Amount Half-Life Emissions
(percent) (hr) (kg/hr)
Air 44 1e+005 1000
Water 39.3 360 1000
Soil 16.6 720 1000
Sediment 0.0938 3.24e+003 0
Persistence Time: 175 hr