Page:NIOSH Manual of Analytical Methods - 2003.pdf/1

 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