Page:NIOSH Manual of Analytical Methods - 1025.pdf/1

 1- and 2-BROMOPROPANE

CH3 CH2 CH2 Br (CH3 )2 CHBr

MW: 123.00 123.00

METHOD: 2552, ISSUE 1

1025

CAS: 106-94-5 75-26-3

EVALUATION: PARTIAL

OSHA : None NIOSH: None ACGIH: None

RTECS:TX4110000 TX4111000 Issue 1: 15 March 2003

PROPERTIES: 1-BP: liquid; d= 1.354 g/mL @ 20 °C; BP= 71 °C; MP = -110 °C; FP= 25 °C. 2-BP: liquid; d= 1.310 g/mL @ 20 °C; BP= 59 °C; MP= -89 °C; FP= 19 °C.

NAMES & SYNONYMS: 1-Bromopropane: Propyl bromide, 1-BP. 2-Bromopropane: Isopropyl bromide, 2-BP.

SAMPLING SAMPLER:

Solid Sorbent Tube [1] (Anasorb CSC, 100/50 mg) Alternative sampler (Anasorb CMS, 150 mg/75 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

0.1L 12 L

SHIPMENT:

Routine

SAMPLE STABILITY:

30 days at 5°C

BLANKS:

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

1-Bromopropane and 2-Bromopropane

DESORPTION:

1-mL CS2 for 30 minutes with agitation.

INJECTION VOLUME:

1-:L

TEMPERATURE: -INJECTION: 200°C -DETECTOR: 250°C -COLUMN: 35°C (3 min) to 150°C (8°C/min) CARRIER GAS:

Helium

COLUMN:

Capillary, fused silica,30-m x 0.32-mm ID; 1.8-:m film phenyl/methyl polysiloxane, Rtx-502.2 or equivalent

CALIBRATION:

Standard solutions of analytes in CS 2.

RANGE:

1-BP: 3.0 to 406.0 :g per sample [1] 2-BP: 4.5 to 393.0 :g per sample [1]

10% of field samples

ACCURACY RANGE STUDIED:

Not determined.

BIAS:

Not determined.

OVERALL PRECISION (Ö r T ):

Not determined.

ACCURACY:

Not determined.

ESTIMATED LOD:

PRECISION ( þ r ):

1-BP: 1.0 :g per sample [1] 2-BP: 1.0 :g per sample [1] 1-BP: 0.015 [1] 2-BP: 0.022 [1]

APPLICABILITY: Method can be applied to any process where bromopropanes are volatilized. The method was field tested in an industrial setting where 1-bromopropane was used in the application of adhesive to foam strips [2].

INTERFERENCES: Any compounds with similar retention times.

OTHER METHODS: None.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition