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Chemical Sampling Information (CSI)
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General Description

Synonyms: Michler's Ketone; 4,4'-bis(Dimethylamino)-benzophenone; bis[4-(Dimethylamino)phenyl]-methanone

OSHA IMIS Code Number: T206

Chemical Abstracts Service (CAS) Registry Number: 90-94-8

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: DJ0250000; 18007

Chemical Description and Physical Properties:
white to greenish leaflets, used in manuf. dyes
molecular weight: 268.35
melting point: 172°C
Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Glass Fiber Filter (37 mm)
    analytical solvent: Methanol
    maximum volume: 180 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: High Performance Liquid Chromatography; HPLC/U.
    method reference: 2 (OSHA In-House file)
    method classification: Partially Validated
Conditions: Column Supelco LC-18-DB; Solvent (80:20) Methanol/Water; Flow 1.0 mL/minUV det 269 & 247 nm; Ret time 6 min; DL 0.4 ug/smpl

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Page last updated: 01/26/1992