CHLORINATED DIPHENYL OXIDE
C12 H4Cl6O
MW: 376.88
CAS: 55720-99-5
METHOD: 5025, Issue 2
5025
RTECS: KO4200000
EVALUATION: PARTIAL
OSHA : 0.5 mg/m 3 NIOSH: 0.5 mg/m 3 ACGIH: 0.5 mg/m 3
Issue 1: 15 August 1987 Issue 2: 15 August 1994
PROPERTIES: Table 1
SYNONYMS: chlorinated diphenyl ether; hexachlorodiphenyl oxide
SAMPLING SAMPLER:
MEASUREMENT
FILTER (0.8-µm cellulose ester membrane)
FLOW RATE:
0.5 to 1.5 L/min
VOL-MIN: -MAX:
8 L @ 0.5 mg/m 3 200 L
SHIPMENT:
within 1 h of sampling, transfer filter and backup pad to screw-cap bottle; otherwise, routine
SAMPLE STABILITY:
not determined
BLANKS:
2 to 10 field blanks per set
BULK SAMPLE:
required; for proper identification of analytes
ACCURACY RANGE STUDIED: BIAS:
TECHNIQUE: GAS CHROMATOGRAPHY, ELECTROLYTIC CONDUCTIVITY DETECTION ANALYTE:
chlorinated diphenyl oxide
DESORPTION:
10 mL isooctane, stand 2 hours
INJECTION VOLUME: 15 µL TEMPERATURE-FURNACE: 760 °C -TRANSFER LINE: 225 °C -VENT: 250 °C -COLUMN: 210 °C GASES-FURNACE: H 2, 150 mL/min -CARRIER: N 2, 150 mL/min COLUMN:
1.5 m x 2-mm ID glass; 5% SE-30 on 80/100 mesh Chromosorb WHP
CALIBRATION:
standard solutions of chlorinated diphenyl oxide in isooctane
RANGE:
4 to 150 µg per sample [2]
3
0.1 to 1 mg/m [1] (90-L samples) - 0.21%
ESTIMATED LOD: 0.2 µg per sample [1]
ˆ ): 0.070 [1] OVERALL PRECISION (S rT ACCURACY:
±13.76%
PRECISION (Sr):
0.019 @ 0.02 to 0.09 mg per sample [1]
APPLICABILITY: The working range is 0.05 to 1.5 mg/m 3 for a 90-L air sample. The method has been evaluated only for the hexachloro derivative. The sampler may not be adequate for the monochloro or dichloro derivatives, which have higher vap or pressures.
INTERFERENCES: None identified.
OTHER METHODS: This revises Method S119 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
