TRIFLUOROBROMOMETHANE
CBrF3
MW: 148.92
METHOD: 1017 , Issue 2 1987
CAS: 75-63-8
1017
RTECS: PA5425000
EVALUATION: PARTIAL
OSHA : 1000 ppm NIOSH: 1000 ppm ACGIH: 1000 ppm (1 ppm = 6.09 mg/m 3 @ NTP)
Issue 1: 15 August
PROPERTIES:
gas; vapor density 5 (air = 1); BP -57.8 °C; MP -168 °C; nonflammable
SYNONYMS: Refrigerant 13B1; bromotrifluoromethane.
SAMPLING SAMPLER:
SOLID SORBENT TUBES (two coconut shell charcoal tubes in series, 400 mg/200 mg and 100 mg/50 mg)
FLOW RATE:
0.01 to 0.05 L/min
VOL-MIN: -MAX:
0.1 L @ 1000 ppm 1L
SHIPMENT:
separate front and back tubes; in dry ice
SAMPLE STABILITY: BLANKS:
MEASUREMENT
BIAS:
trifluorobromomethane
DESORPTION:
5 mL methylene chloride; stand 30 min 5 µL
CARRIER GAS:
2 to 10 field blanks per set
- 2.9%
ANALYTE:
TEMPERATURE-INJECTOR: -COLUMN: -DETECTOR:
not determined
2890 to 11,500 mg/m (1-L samples)
GAS CHROMATOGRAPHY, FID
INJECTION VOLUME:
COLUMN:
ACCURACY RANGE STUDIED:
TECHNIQUE:
3
170 °C 105 °C 230 °C
N 2 , 50 mL/min
stainless steel, 1.2 x 6-mm OD, packed with 50/80 mesh Porapak Q
CALIBRATION:
standard solutions of analyte in methylene chloride
RANGE:
0.5 to 18 mg per sample [1]
[1]
ESTIMATED LOD: 0.05 mg per sample
ˆ rT): 0.065 [1] OVERALL PRECISION (S ACCURACY:
± 13.46%
PRECISION (Sr):
0.038 @ 3 to 12 mg per sample [1]
APPLICABILITY: The working range is 80 to 3000 ppm (500 to 18,000 mg/m 3 ) for a 1-L air sample.
INTERFERENCES: None reported.
OTHER METHODS: This revises Method S125 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
