Hydrogen ion H structure

H structure
Molecular Formula H
Average mass 1.007 Da
Density
Boiling Point
Flash Point
Molar Refractivity
Polarizability
Surface Tension
Molar Volume
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      colourless gas Oxford University Chemical Safety Data (No longer updated) More details
    • Stability:

      Stable. Highly flammable. Readily forms explosive mixtures with air. Upper (U.K.) composition limit for use of a nitrogen/hydrogen mixture in the open lab is 5.7% hydrogen. Oxford University Chemical Safety Data (No longer updated) More details
    • Safety:

      Safety glasses; maintain good ventilation at all times. Oxford University Chemical Safety Data (No longer updated) More details

Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module

Density:
Boiling Point:
Vapour Pressure:
Enthalpy of Vaporization:
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations:
ACD/LogP:
ACD/LogD (pH 5.5):
ACD/BCF (pH 5.5):
ACD/KOC (pH 5.5):
ACD/LogD (pH 7.4):
ACD/BCF (pH 7.4):
ACD/KOC (pH 7.4):
Polar Surface Area: 0 Å2
Polarizability:
Surface Tension:
Molar Volume:

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™

 
 Log Octanol-Water Partition Coef (SRC):
 Log Kow (KOWWIN v1.67 estimate) = 0.23

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 439.86 (Adapted Stein & Brown method)
 Melting Pt (deg C): 146.26 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 1.36E-007 (Modified Grain method)
 Subcooled liquid VP: 2.31E-006 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): 3950
 log Kow used: 0.23 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 1789.3 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Neutral Organics

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 2.45E-002 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 4.576E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 0.23 (KowWin est)
 Log Kaw used: 0.001 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 0.229
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.7471
 Biowin2 (Non-Linear Model) : 0.9523
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 3.1969 (weeks )
 Biowin4 (Primary Survey Model) : 3.8463 (days )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.7091
 Biowin6 (MITI Non-Linear Model): 0.9239
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.8361
 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): 0.000308 Pa (2.31E-006 mm Hg)
 Log Koa (Koawin est ): 0.229
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 0.00974 
 Octanol/air (Koa) model: 4.16E-013 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 0.26 
 Mackay model : 0.438 
 Octanol/air (Koa) model: 3.33E-011 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 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): 0.349 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 14.3
 Log Koc: 1.155 

 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 = 0.500 (BCF = 3.162)
 log Kow used: 0.23 (estimated)

 Volatilization from Water:
 Henry LC: 0.0245 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 0.5304 hours (31.82 min)
 Half-Life from Model Lake : 0.5304 hours

 Removal In Wastewater Treatment:
 Total removal: 90.51 percent
 Total biodegradation: 0.02 percent
 Total sludge adsorption: 0.40 percent
 Total to Air: 90.09 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 49.2 1e+005 1000 
 Water 47.6 360 1000 
 Soil 3.11 720 1000 
 Sediment 0.0884 3.24e+003 0 
 Persistence Time: 158 hr




 

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