PHENYL ETHER-DIPHENYL MIXTURE
(C6H5)2O & C6H5C6H5
MW: 166 (average)
METHOD: 2013, Issue 1
CAS: 8004-13-5
EVALUATION: PARTIAL
OSHA : 1 ppm NIOSH: 1 ppm ACGIH: no TLV (1 ppm = 6.79 mg/m 3 @ NTP)
PROPERTIES:
2013
RTECS: DV1500000 Issue 1: 15 August 1994
liquid; BP 257 °C; MP 12 °C; d = 1.06 g/mL @ 25°C; VP = 10 Pa (0.08 mm Hg) @ 25 °C; vapor density (air = 1) 5.7.; flammable limits in air 0.5 to 6.2% v/v
SYNONYMS: None. This is a liquid eutectic, prepared by dissolving 26.5 parts by weight solid diphenyl in 73.5 parts melted phenyl ether. SAMPLING
MEASUREMENT
SAMPLER:
SORBENT TUBE (silica gel, 150/75 mg)
FLOW RATE:
0.01 to 0.2 L/min
VOL-MIN: -MAX:
1 L @ 1 ppm 40 L
SHIPMENT:
routine
SAMPLE STABILITY:
not determined
BLANKS:
2 to 10 field blanks per set
BULK SAMPLE:
required
TECHNIQUE:
gas chromatography, FID
ANALYTE:
phenyl ether-diphenyl mixture
EXTRACTION:
0.5 mL benzene for 30 min
INJECTION VOLUME:
5 µL
CARRIER GAS:
nitrogen, 50 mL/min
COLUMN:
10-ft x 1/8-in stainless steel column packed with 5% OV-17 on 80/100 mesh, acid washed DMCS Chromosorb W
DETECTOR:
flame ionization detector
CALIBRATION:
standard solutions of eutectic mixture in hexane
RANGE:
7 to 210 µg per sample [1]
ACCURACY RANGE STUDIED:
3.86 to 15.7 mg/m 3 [1] (10-L samples)
BIAS:
- 0.35%
ESTIMATED LOD: 4 µg per sample [1]
ˆ ): OVERALL PRECISION (S rT
PRECISION (Sr):
0.073 @ 38 to 156.7 µg per sample [1]
0.089 [1]
ACCURACY:
± 17.2%
APPLICABILITY: The working range is 0.1 to 10 ppm (0.7 to 70 mg/m 3) for a 10-L air sample. Better sensitivity may be achieved with a capillary column in place of a packed column; a DB-17 column (50% methyl, phenyl-50% dimethyl-polysiloxane) with appropriate instrumental conditions is recommended.
INTERFERENCES: None identified.
OTHER METHODS: This is Method S73 [2] in fourth edition format.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
