1,1,2,2-TETRABROMOETHANE
Br2CHCHBr2
MW: 345.70
METHOD: 2003, Issue 2
CAS: 79-27-6
RTECS: KI8225000
EVALUATION: PARTIAL
OSHA : 1 ppm NIOSH: no REL ACGIH: 1 ppm (1 ppm = 14.14 mg/m 3 @ NTP)
2003
PROPERTIES:
Issue 1: 15 May 1985 Issue 2: 15 August 1994
liquid; d 2.964 g/mL @ 20 °C; BP 243.5 °C; MP 0 °C; VP 13 Pa (0.1 mm Hg) @ 20 °C
SYNONYMS: acetylene tetrabromide; Muthmann's liquid; sym-tetrabromoethane
SAMPLING SAMPLER:
SOLID SORBENT TUBE (silica gel, 150 mg/75 mg)
FLOW RATE:
0.2 to 1 L/min
VOL-MIN: -MAX:
50 L @ 1 ppm 100 L
SHIPMENT:
routine
SAMPLE STABILITY:
not determined
FIELD BLANKS:
MEASUREMENT METHOD:
GAS CHROMATOGRAPHY, FID
ANALYTE:
1,1,2,2-tetrabromoethane
DESORPTION:
1 mL tetrahydrofuran; 30 min
INJECTION VOLUME:
5 µL
TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:
2 to 10 field blanks per set
220 °C 270 °C 105 °C
CARRIER GAS:
N 2, 50 mL/min
COLUMN:
0.9 m x 6.4-mm OD glass; 5% SE-30 on 80/100 mesh Gas Chrom W
CALIBRATION:
1,1,2,2-tetrabromoethane in tetrahydrofuran
RANGE:
0.7 to 4 mg per sample
ACCURACY RANGE STUDIED:
6.5 to 23 mg/m 3 [1] (98-L samples)
BIAS:
- 9.2%
ˆ ): 0.096 [1] OVERALL PRECISION (S rT ACCURACY:
± 23.6%
ESTIMATED LOD: 0.08 mg per sample PRECISION (Sr):
0.041 [1]
APPLICABILITY: The working range is 0.5 to 2.8 ppm (7 to 40 mg/m 3) for a 100-L air sample. High humidity during sampling will reduce breakthrough volume.
INTERFERENCES: None identified.
OTHER METHODS: This is Method S117 [2] in a revised format.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
