ChemSpider 2D Image | Ethanoic anhydride | C4H6O3

Ethanoic anhydride

  • Molecular FormulaC4H6O3
  • Average mass102.089 Da
  • Monoisotopic mass102.031693 Da
  • ChemSpider ID7630

More details:

Featured data source
The Merck Index Online

Validated by Experts, Validated by Users, Non-Validated, Removed by Users

Acetyl anhydride
108-24-7 [RN]
203-564-8 [EINECS]
385737 [Beilstein]
Acetic acid anhydride
Acetic anhydride [ACD/IUPAC Name]
Anhídrido acético [Spanish]
Anhydrid kyseliny octove [Czech]
anhydride acetique
Anhydride acétique [French] [ACD/IUPAC Name]
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Validated by Experts, Validated by Users, Non-Validated, Removed by Users

2E48G1QI9Q [DBID]
AK1925000 [DBID]
110043_ALDRICH [DBID]
242845_SIAL [DBID]
320102_SIAL [DBID]
33214_RIEDEL [DBID]
539996_SIAL [DBID]
91204_FLUKA [DBID]
A6404_SIAL [DBID]
Acetic anhydride [UN1715] [Corrosive] [DBID]
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  • Experimental Physico-chemical Properties
  • Miscellaneous

    • Appearance:

      Colorless liquid with a strong, pungent, vinegar-like odor. NIOSH AK1925000
      colourless liquid smelling of ethanoic acid OU Chemical Safety Data (No longer updated) More details

    • Stability:

      Flammable. Incompatible with strong oxidizing agents, water,strong bases, alcohols. OU Chemical Safety Data (No longer updated) More details

    • Toxicity:

      ORL-RAT LD50 1780 mg kg-1, SKN-RBT LD50 4000 mg kg-1 OU Chemical Safety Data (No longer updated) More details

    • Safety:

      10-20/22-34 Alfa Aesar 36292, L04295
      26-36/37/39-45 Alfa Aesar 36292, L04295
      8 Alfa Aesar 36292, L04295
      Danger Alfa Aesar 36292, L04295
      DANGER: CORROSIVE, burns skin and eyes Alfa Aesar 36292
      DANGER: CORROSIVE, FLAMMABLE, burns skin and eyes Alfa Aesar 36292, L04295
      H314-H226-H302-H332 Alfa Aesar 36292, L04295
      P210-P260-P303+P361+P353-P305+P351+P338-P405-P501a Alfa Aesar 36292, L04295
      Safety glasses, good ventilation. OU Chemical Safety Data (No longer updated) More details

    • First-Aid:

      Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately NIOSH AK1925000

    • Exposure Routes:

      inhalation, ingestion, skin and/or eye contact NIOSH AK1925000

    • Symptoms:

      Conjunctivitis, lacrimation (discharge of tears), corneal edema, opacity, photophobia (abnormal visual intolerance to light); nasal, pharyngeal irritation; cough, dyspnea (breathing difficulty), bronc hitis; skin burns, vesiculation, sensitization dermatitis NIOSH AK1925000

    • Target Organs:

      Eyes, skin, respiratory system NIOSH AK1925000

    • Incompatibility:

      Water, alcohols, strong oxidizers (especially chromic acid), amines, strong caustics [Note: Corrosive to iron, steel & other metals. Reacts with water to form acetic acid.] NIOSH AK1925000

    • Personal Protection:

      Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation Provide: Eyewash, Quick drench NIOSH AK1925000

    • Exposure Limits:

      NIOSH REL : C 5 ppm (20 mg/m 3 ) OSHA PEL ?: TWA 5 ppm (20 mg/m 3 ) NIOSH AK1925000

    • Chemical Class:

      An acyclic carboxylic anhydride derived from acetic acid. ChEBI CHEBI:36610
  • Gas Chromatography

    • Retention Index (Kovats):

      722 (estimated with error: 89) NIST Spectra mainlib_291302, replib_19985, replib_228065

    • Retention Index (Normal Alkane):

      706 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column diameter: 0.20 mm; Column length: 25 m; Column type: Capillary; Heat rate: 6 K/min; Start T: 50 C; End T: 250 C; CAS no: 108247; Active phase: OV-101; Carrier gas: N2/He; Phase thickness: 0.10 um; Data type: Normal alkane RI; Authors: Zenkevich, I.G., Experimentally measured retention indices., 2005., Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 108247; Active phase: Polydimethyl siloxanes; Data type: Normal alkane RI; Authors: Zenkevich, I.G., Encyclopedia of Chromatography. Derivatization of Amines, Amino Acids, Amides and Imides for GC Analysis, Marcel Dekker, Inc, New York - Basel, 2001, 224.) NIST Spectra nist ri
      699 (Program type: Ramp; Column cl... (show more) ass: Standard non-polar; Column type: Capillary; CAS no: 108247; Active phase: Methyl Silicone; Data type: Normal alkane RI; Authors: Zenkevich, I.G.; Korolenko, L.I.; Khralenkova, N.B., Desorption with solvent vapor as a method of sample preparation in the sorption preconcentration of organic-compounds from the air of a working area and from industrial-waste gases, J. Appl. Chem. USSR (Engl. Transl.), 50(10), 1995, 937-944.) NIST Spectra nist ri
      1236 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 60 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 40 C; End T: 200 C; Start time: 2 min; CAS no: 108247; Active phase: DB-Wax; Carrier gas: He; Data type: Normal alkane RI; Authors: Umano, K.; Hagi, Y.; Nakahara, K.; Shyoji, A.; Shibamoto, T., Volatile chemicals formed in the headspace of a heated D-glucose/L-cysteine Maillard model system, J. Agric. Food Chem., 43, 1995, 2212-2218.) NIST Spectra nist ri
      1227 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column type: Capillary; CAS no: 108247; Active phase: Polyethylene Glycol; Data type: Normal alkane RI; Authors: Zenkevich, I.G.; Korolenko, L.I.; Khralenkova, N.B., Desorption with solvent vapor as a method of sample preparation in the sorption preconcentration of organic-compounds from the air of a working area and from industrial-waste gases, J. Appl. Chem. USSR (Engl. Transl.), 50(10), 1995, 937-944.) NIST Spectra nist ri
      1240 (Program type: Ramp; Column cl... (show more) ass: Standard polar; Column diameter: 0.25 mm; Column length: 50 m; Column type: Capillary; Heat rate: 2 K/min; Start T: 60 C; End T: 180 C; Start time: 4 min; CAS no: 108247; Active phase: Carbowax 20M; Carrier gas: He; Data type: Normal alkane RI; Authors: Kawakami, M.; Kobayashi, A.; Kator, K., Volatile constituents of Rooibos tea (Aspalathus linearis) as affected by extraction process, J. Agric. Food Chem., 41(4), 1993, 633-636.) NIST Spectra nist ri

Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module, version: 14.00

Density: 1.1±0.1 g/cm3
Boiling Point: 141.1±8.0 °C at 760 mmHg
Vapour Pressure: 5.9±0.3 mmHg at 25°C
Enthalpy of Vaporization: 37.8±3.0 kJ/mol
Flash Point: 54.4±0.0 °C
Index of Refraction: 1.387
Molar Refractivity: 22.4±0.3 cm3
#H bond acceptors: 3
#H bond donors: 0
#Freely Rotating Bonds: 2
#Rule of 5 Violations: 0
ACD/LogP: -0.48
ACD/LogD (pH 5.5): 0.04
ACD/BCF (pH 5.5): 1.00
ACD/KOC (pH 5.5): 24.90
ACD/LogD (pH 7.4): 0.04
ACD/BCF (pH 7.4): 1.00
ACD/KOC (pH 7.4): 24.90
Polar Surface Area: 43 Å2
Polarizability: 8.9±0.5 10-24cm3
Surface Tension: 29.1±3.0 dyne/cm
Molar Volume: 95.2±3.0 cm3

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

                        
 Log Octanol-Water Partition Coef (SRC):
    Log Kow (KOWWIN v1.67 estimate) =  -0.58

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
    Boiling Pt (deg C):  52.62  (Adapted Stein & Brown method)
    Melting Pt (deg C):  -95.10  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  6.5  (Mean VP of Antoine & Grain methods)
    MP  (exp database):  -73 deg C
    BP  (exp database):  139.5 deg C
    VP  (exp database):  5.10E+00 mm Hg at 25 deg C

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
    Water Solubility at 25 deg C (mg/L):  3.588e+005
       log Kow used: -0.58 (estimated)
       no-melting pt equation used
     Water Sol (Exper. database match) =  1.2e+005 mg/L (20 deg C)
        Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  5.85e+005 mg/L
    Wat Sol (Exper. database match) =  120000.00
       Exper. Ref:  YALKOWSKY,SH & DANNENFELSER,RM (1992)

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   3.57E-005  atm-m3/mole
   Group Method:   Incomplete
   Exper Database: 5.71E-06  atm-m3/mole
 Henrys LC [VP/WSol estimate using EPI values]:  2.433E-006 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Log Kow used:  -0.58  (KowWin est)
  Log Kaw used:  -3.632  (exp database)
      Log Koa (KOAWIN v1.10 estimate):  3.052
      Log Koa (experimental database):  None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.6989
   Biowin2 (Non-Linear Model)     :   0.8262
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   2.9736  (weeks       )
   Biowin4 (Primary Survey Model) :   3.7004  (days-weeks  )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.4092
   Biowin6 (MITI Non-Linear Model):   0.4055
 Anaerobic Biodegradation Probability:
   Biowin7 (Anaerobic Linear Model):  0.6769
 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):  680 Pa (5.1 mm Hg)
  Log Koa (Koawin est  ): 3.052
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  4.41E-009 
       Octanol/air (Koa) model:  2.77E-010 
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  1.59E-007 
       Mackay model           :  3.53E-007 
       Octanol/air (Koa) model:  2.21E-008 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
   Hydroxyl Radicals Reaction:
      OVERALL OH Rate Constant =   0.0843 E-12 cm3/molecule-sec
      Half-Life =   126.850 Days (12-hr day; 1.5E6 OH/cm3)
   Ozone Reaction:
      No Ozone Reaction Estimation
   Fraction sorbed to airborne particulates (phi): 2.56E-007 (Junge,Mackay)
    Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
      Koc    :  1
      Log Koc:  0.000 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
  Total Kb for pH > 8 at 25 deg C :  2.569E+003  L/mol-sec
  Kb Half-Life at pH 8:       4.496  minutes
  Kb Half-Life at pH 7:      44.959  minutes

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
   Log BCF from regression-based method = 0.500 (BCF = 3.162)
       log Kow used: -0.58 (estimated)

 Volatilization from Water:
    Henry LC:  5.71E-006 atm-m3/mole  (Henry experimental database)
    Half-Life from Model River:      104.6  hours   (4.36 days)
    Half-Life from Model Lake :       1226  hours   (51.09 days)

 Removal In Wastewater Treatment:
    Total removal:               2.16  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.75  percent
    Total to Air:                0.32  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       9.22            3.04e+003    1000       
   Water     44.5            360          1000       
   Soil      46.2            720          1000       
   Sediment  0.0816          3.24e+003    0          
     Persistence Time: 372 hr

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