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Search term: AKEJUJNQAAGONA-UHFFFAOYAX
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Inherent Properties, Identifiers and References
ChemSpider ID: 23080
Empirical Formula: O3S
Molecular Weight: 80.0632
Nominal Mass: 80 Da
Average Mass: 80.0632 Da
Monoisotopic Mass: 79.956814 Da
Systematic Name: sulfur trioxide
SMILES: O=S(=O)=O
InChI: InChI=1/O3S/c1-4(2)3
InChIKey: AKEJUJNQAAGONA-UHFFFAOYAX
Std. InChI: InChI=1S/O3S/c1-4(2)3
Std. InChIKey: AKEJUJNQAAGONA-UHFFFAOYSA-N
(Details...) Wikipedia Article(s)
Sulfur trioxide (also spelled sulphur trioxide) is the chemical compound with the formula SO3. In the gaseous form, this species is a significant pollutant, being the primary agent in acid rain. It is prepared on massive scales as a precursor to sulfuric acid. Read more... or Edit at Wikipedia...
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User Data

  • experimental physchem properties
    • Melting Point: 16.8 C
    • Boiling Point: -41F
    • Boiling Point: 44.7 C
    • Freezing Point: -185F
    • Solubility: Reacts
    • Ionization Potential: 12.63 eV
  • miscellaneous
    • Appearance: Colorless gas with an odor like sulfur dioxide. [Note: Shipped as a liquefied compressed gas.]
    • Appearance: Needles or polymer
    • Stability: Stable. Incompatible with organic materials, finely powdered metals,bases, water, cyanides and a wide variety of other chemicals. Reactsviolently with water, oxygen and other chemicals - read a fullda ta sheet before use.
    • Safety: Safety glasses or face mask, gloves. Good ventilation.
    • First Aid: Eye: Frostbite Skin: Frostbite Breathing: Respiratory support
    • Exposure Routes: inhalation, skin and/or eye contact
    • Symptoms: Irritation eyes, skin, mucous membrane; eye, skin burns (from SF4 releasing hydrofluoric acid on exposure to moisture); liquid: frostbite; in animals: dyspnea (breathing difficulty), lassitude (weakne ss, exhaustion), rhinorrhea (discharge of thin mucus)
    • Target Organs: Eyes, skin, respiratory system
    • Incompatibilities and Reactivities: Moisture, concentrated sulfuric acid, dioxygen difluoride [Note: Readily hydrolyzed by moisture, forming hydrofluoric acid & thionyl fluoride.]
    • Personal protection and Sanitation: Skin: Frostbite Eyes: Frostbite Wash skin: No recommendation Remove: No recommendation Change: No recommendation Provide: Frostbite wash
    • Exposure Limits: NIOSH REL : C 0.1 ppm (0.4 mg/m 3 ) OSHA PEL ?: none
Names and Synonyms

Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Redirected by Users, Redirect Approved by Experts

14265-45-3 [RN]

Oxosulfan​-dioxid

Oxosulfan​e dioxide

Oxosulfan​e-dioxyde

sulfane, ​oxo-, dio​xide

Sulfur tr​ioxide, i​nhibited ​or Sulfur​ trioxide​, stabili​zed [UN18​29] [Corr​osive]

Sulfur tr​ioxide, u​ninhibite​d [NA1829​] [Corros​ive]

[SO3]

11/9/7446

12210-38-7 [RN]

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Database ID(s)

Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Redirected by Users, Redirect Approved by Experts

ACD/LogP: # of Rule of 5 Violations:
ACD/LogD (pH 5.5): ACD/LogD (pH 7.4):
ACD/BCF (pH 5.5): ACD/BCF (pH 7.4):
ACD/KOC (pH 5.5): ACD/KOC (pH 7.4):
#H bond acceptors: 3 #H bond donors: 0
#Freely Rotating Bonds: 0 Polar Surface Area: 51.21 Å2
Index of Refraction: 1.662 Molar Refractivity: 13.02 cm3
Molar Volume: 35.1 cm3 Polarizability: 5.16 10-24cm3
Surface Tension: 194.2 dyne/cm Density: 2.27 g/cm3
Flash Point: °C Enthalpy of Vaporization: 40.69 kJ/mol
Boiling Point: 44.8 °C at 760 mmHg Vapour Pressure: 371 mmHg at 25°C
            
 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):  473.12  (Adapted Stein & Brown method)
    Melting Pt (deg C):  173.17  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.3E-007  (Modified Grain method)
    MP  (exp database):  16.8-62.3 deg C
    VP  (exp database):  2.63E+02 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  8.337e+004
       log Kow used: 0.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  1.4211e+005 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   1.73E-005  atm-m3/mole
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  1.643E-013 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  0.23  (KowWin est)
  Log Kaw used:  -3.150  (HenryWin est)
      Log Koa (KOAWIN v1.10 estimate):  3.380
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7094
   Biowin2 (Non-Linear Model)     :   0.8667
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.0223  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7322  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4740
   Biowin6 (MITI Non-Linear Model):   0.5534
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.8361
 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):  3.51E+004 Pa (263 mm Hg)
  Log Koa (Koawin est  ): 3.380
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  8.56E-011 
       Octanol/air (Koa) model:  5.89E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  3.09E-009 
       Mackay model           :  6.84E-009 
       Octanol/air (Koa) model:  4.71E-008 

 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): 4.97E-009 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  4.411
      Log Koc:  0.645 

 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:  1.73E-005 atm-m3/mole  (estimated by Bond SAR Method)
    Half-Life from Model River:      31.19  hours   (1.3 days)
    Half-Life from Model Lake :      415.3  hours   (17.31 days)

 Removal In Wastewater Treatment:
    Total removal:               2.79  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.95  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       6.44            1e+005       1000       
   Water     40.8            360          1000       
   Soil      52.7            720          1000       
   Sediment  0.0757          3.24e+003    0          
     Persistence Time: 427 hr