NAME: Trimellitic Anhydride
SYNONYM(s):
TMA
IMIS: 2502
CAS: 552-30-7
NIOSH: RTECS DC2050000; 14493
DESCRIPTION:
White solid.
MW:
192.12
MP:
165 C
Exposure Limits
ACGIH TLV:
0.04 mg/m3 Ceiling
NIOSH REL:
0.005 ppm TWA; handle in the workplace as an extremely toxic substance
Health Factors
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA: Two Coated Glass Fiber Filters (37 mm) Coating is 10 mg Veratryamine and 10 mg di-n-octylphthalate.
ANL SOLVENT: 0.02 N Ammonium Hydroxide
MAX V: 480 Liters MAX F: 2.0 L/min
ANL 1: High Performance Liquid Chromatography; HPLC/UV
REF: 2 (OSHA 98)
CLASS: Fully Validated
NOTE: Store filters under refrigeration and use within 1 month. Small interfering peaks start appearing after that time.
COND: Column: Asahipak C4P-50 (C4); Mobile Phase: 25/75/0.1 Acetonitrile/Water/H3PO4; Detector: UV @ 205 or 232 nm; Alt Column: C18; Alt Mobile Phase: 22.5/77.5/0.1 Acetonitrile/Water/H3PO4; Detector: UV @ 205 or 232 nm
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