Page:NIOSH Manual of Analytical Methods - 2519.pdf/1

 ETHYL CHLORIDE

CH3CH2Cl

MW: 64.52

METHOD: 2519, Issue 2

CAS: 75-00-3

2519

RTECS: KH7525000

EVALUATION: FULL

OSHA : 1000 ppm NIOSH: handle with caution ACGIH: 1000 ppm (1 ppm = 2.64 mg/m 3 @ NTP)

Issue 1: 15 May 1985 Issue 2: 15 August 1994

PROPERTIES: gas; BP 12.2 °C; vapor density (air = 1) 2.22; explosive range 3.8 to 15.4% v/v in air

SYNONYMS: chloroethane; monochloroethane

SAMPLING SAMPLER:

MEASUREMENT

SOLID SORBENT TUBES (2 coconut shell charcoal tubes, 400 mg and 200 mg)

TECHNIQUE:

GAS CHROMATOGRAPHY, FID

ANALYTE:

ethyl chloride

FLOW RATE:

0.02 to 0.05 L/min

DESORPTION:

2 mL CS 2; stand 30 min

VOL-MIN: -MAX:

0.3 L 3L

INJECTION VOLUME:

SHIPMENT:

separate front and back tubes

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

SAMPLE STABILITY:

at least 7 days @ 25 °C [1]

CARRIER GAS:

N 2 or He, 30 mL/min

FIELD BLANKS:

2 to 10 field blanks per set

COLUMN:

stainless steel, 6 m x 3 mm OD, 10% FFAP on 100/120 mesh Chromosorb WHP

CALIBRATION:

standard ethyl chloride solutions in CS 2 with internal standard

RANGE:

1 to 16 mg per sample

ACCURACY

5 µL 160 °C 190 °C 110 °C

3

RANGE STUDIED:

1586 to 6500 mg/m [1] (3-L samples)

BIAS:

- 1.4%

ESTIMATED LOD: 0.01 mg per sample

ˆ ): 0.096 [1] OVERALL PRECISION (S rT ACCURACY:

± 21.3%

PRECISION (Sr):

0.024 @ 3.4 to 15 mg per sample [1]

APPLICABILITY: The working range is 330 to 5300 mg/m 3 (130 to 2000 ppm) for a 3-L air sample; lower concentrations may be measured if desorption efficiency is adequate.

INTERFERENCES: None known.

OTHER METHODS: This revises Method S105 [2].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94