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Phthalic anhydrideC8H4O3

CAS-No.:
85-44-9
UN-No.:
2214
EC-No.:
201-607-5
Hazard identification number:
80
Hazard signs
GHS05
GHS07
GHS08

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Occupational exposure limit
ACGIH (US)
  • TWA (ppm) 0,0003 IFV
  • TWA (mg/m3) 0,002 IFV
  • STEL (ppm) 0,0009 IFV
  • STEL (mg/m3) 0,005 IFV
  • TWA (mg/m3) SLA 0,05 mg/100 cm2
NIOSH (REL) (US)
  • TWA (ppm) 1
  • TWA (mg/m3) 6
NIOSH (US)
  • IDLH (mg/m3) 60
OSHA (PEL) (US)
  • TWA (ppm) 2
  • TWA (mg/m3) 12
  • H: 302
    Harmful if swallowed.
  • H: 315
    Causes skin irritation
  • H: 317
    May cause an allergic skin reaction
  • H: 318
    Causes serious eye damage.
  • H: 334
    May cause allergy or asthma symptoms or breathing difficulties if inhaled
  • H: 335
    May cause respiratory irritation

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

  • Melting point:
    267.8 °F
  • Boiling Point:
    545 °F
  • Density (at 20 °C, if not notified otherwise):
    1,53 g/cm3
  • Ionization:
    10,1 eV
  • Flash Point:
    305.6 °F
  • Ignition Temperature:
    1076 °F
  • Lower Explosive Limit:
    1.7 Vol.-%
  • Upper Explosive Limit:
    10.5 Vol.-%
  • Hazardous Effects:
    Ss, Sr
  •  

*Source: GESTIS Substance Database, https://gestis-database.dguv.de

Also known as:
  • 1,2-Benzenedicarboxylic anhydride
  • 1,3-Isobenzofurandion
  • PAN
  • Phthalic acid anhydride
  • Phthalic anhydride

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