ChemSpider 2D Image | Hydrofluoric acid | HF

Hydrofluoric acid

  • Molecular FormulaHF
  • Average mass20.006 Da
  • Monoisotopic mass20.006227 Da
  • ChemSpider ID14214

More details:

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

12381-92-9 [RN]
13981-56-1 [RN]
14762-94-8 [RN]
231-634-8 [EINECS]
32057-09-3 [RN]
7664-39-3 [RN]
Acide fluorhydrique [French]
Acido fluorhidrico [Spanish]
Acido fluoridrico [Italian]
Atomic fluorine

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

UN1052 [DBID]
02658_FLUKA [DBID]
244279_SIAL [DBID]
339261_SIAL [DBID]
  • Experimental Physico-chemical Properties
  • Miscellaneous
    • Appearance:

      colourless gas with a pungent odour OU Chemical Safety Data (No longer updated) More details
    • Stability:

      Stable. Hygroscopic. Incompatible with glass, alkali metals,light metals, alkaline earth metals OU Chemical Safety Data (No longer updated) More details
    • Toxicity:

      Inorganic Compound; Industrial Precursor/Intermediate; Industrial By-product/Pollutant; Non-Metal; Fluoride Compound; Pollutant; Household Toxin; Industrial/Workplace Toxin; Synthetic Compound Toxin, Toxin-Target Database T3D0247
      ORL-RAT LD50 1276 mg kg-1 OU Chemical Safety Data (No longer updated) More details
    • Safety:

      20-26-36/37/39-45-60 Alfa Aesar 33258, 38745, 38746
      26/27/28-35 Alfa Aesar 10989, 33258, 38745, 38746
      7/9-26-36/37 Alfa Aesar 10989
      DANGER: CORROSIVE, burns skin and eyes Alfa Aesar 10989, 33258, 38745, 38746
      Rubber or plastic gloves, safety glasses or face mask,good ventilation. OU Chemical Safety Data (No longer updated) More details
    • First-Aid:

      Eye: Irrigate immediately (solution/liquid) Skin: Water flush immediately (solution/liquid) Breathing: Respiratory support Swallow: Medical attention immediately (solution) NIOSH MW7875000
    • Exposure Routes:

      inhalation, skin absorption (liquid), ingestion (solution), skin and/or eye contact NIOSH MW7875000
    • Symptoms:

      Irritation eyes, skin, nose, throat; pulmonary edema; eye, skin burns; rhinitis; bronchitis; bone changes NIOSH MW7875000
    • Target Organs:

      Eyes, skin, respiratory system, bones NIOSH MW7875000
    • Incompatibility:

      Metals, water or steam [Note: Corrosive to metals. Will attack glass and concrete.] NIOSH MW7875000
    • Personal Protection:

      Skin: Prevent skin contact (liquid) Eyes: Prevent eye contact (liquid) Wash skin: When contaminated (liquid) Remove: When wet or contaminated (liquid) Change: No recommendation Provide: Eyewash (liqui d), Quick drench (liquid) NIOSH MW7875000
    • Chemical Class:

      A diatomic molecule containing covalently bonded hydrogen and fluorine atoms. ChEBI CHEBI:24061, CHEBI:29228, CHEBI:30239, CHEBI:36940
      The stable isotope of fluorine with relative atomic mass 18.998403 and nuclear spin (1)/2. ChEBI CHEBI:24061, CHEBI:29228, CHEBI:30239, CHEBI:36940
      The stable isotope of fluorine with relative atomic mass 18.998403 and nuclear spin <smallsup>1</smallsup>/<smallsub>2</smallsub>. ChEBI CHEBI:24061, CHEBI:36940

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

Boiling Point: 19.5±9.0 °C at 760 mmHg
Vapour Pressure: 922.1±0.0 mmHg at 25°C
Enthalpy of Vaporization: 25.5±3.0 kJ/mol
Flash Point:
Index of Refraction:
Molar Refractivity:
#H bond acceptors: 0
#H bond donors: 0
#Freely Rotating Bonds: 0
#Rule of 5 Violations:
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
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):  439.92  (Adapted Stein & Brown method)
    Melting Pt (deg C):  138.38  (Mean or Weighted MP)
    VP(mm Hg,25 deg C):  1.66E-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):  5.736e+004
       log Kow used: 0.23 (estimated)
       no-melting pt equation used

 Water Sol Estimate from Fragments:
    Wat Sol (v1.01 est) =  24682 mg/L

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

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
   Bond Method :   Incomplete
   Group Method:   Incomplete
 Henrys LC [VP/WSol estimate using EPI values]:  7.620E-014 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
  Can Not Estimate (can not calculate HenryLC)

 Probability of Rapid Biodegradation (BIOWIN v4.10):
   Biowin1 (Linear Model)         :   0.7380
   Biowin2 (Non-Linear Model)     :   0.9385
 Expert Survey Biodegradation Results:
   Biowin3 (Ultimate Survey Model):   3.1550  (weeks       )
   Biowin4 (Primary Survey Model) :   3.8189  (days        )
 MITI Biodegradation Probability:
   Biowin5 (MITI Linear Model)    :   0.6700
   Biowin6 (MITI Non-Linear Model):   0.1151
 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 (): not available
   Kp (particle/gas partition coef. (m3/ug)):
       Mackay model           :  0.00974 
       Octanol/air (Koa) model:  not available
   Fraction sorbed to airborne particulates (phi):
       Junge-Pankow model     :  0.26 
       Mackay model           :  0.438 
       Octanol/air (Koa) model:  not available

 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:  7.62E-014 atm-m3/mole  (calculated from VP/WS)
    Half-Life from Model River: 7.818E+009  hours   (3.258E+008 days)
    Half-Life from Model Lake : 7.818E+009  hours   (3.258E+008 days)

 Removal In Wastewater Treatment:
    Total removal:               1.85  percent
    Total biodegradation:        0.09  percent
    Total sludge adsorption:     1.76  percent
    Total to Air:                0.00  percent
      (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
           Mass Amount    Half-Life    Emissions
            (percent)        (hr)       (kg/hr)
   Air       2.51e-006       1e+005       1000       
   Water     38.1            360          1000       
   Soil      61.8            720          1000       
   Sediment  0.0708          3.24e+003    0          
     Persistence Time: 585 hr


Click to predict properties on the Chemicalize site