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Chemical Sampling Information (CSI)
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General Description

Synonyms: 5,5'-Carbonylbis-1,3-Isobenzofurandione; BTDA; Benzophenonetetracarboxylic Dianhydride

OSHA IMIS Code Number: B727

Chemical Abstracts Service (CAS) Registry Number: 2421-28-5

Chemical Description and Physical Properties:

molecular formula: C17H6O7
Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Polytetrafluoroethylene (FH) Filter, 0.5 microns
    maximum volume: 100 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated

Conditions:

  • column: C18
    mobile phase: 24:76:0.15 Acetonitrile:Water:H3PO4
    detector wavelength: 225 or 265nm
    detection limit: 0.027 mg/m3
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