ACROLEIN
H2C=CHCHO
MW : 56.07
METHOD: 2501, Issue 2
CAS: 107-02-8
2501
RTECS: AS1050000
EVALUATION: PARTIAL
OSHA : 0.1 ppm NIOSH: 0.1 ppm; STEL 0.3 ppm; Group I Pesticide ACGIH: 0.1 ppm, STEL 0.3 ppm (1 ppm = 2.29 mg/m 3 @ NTP)
PROPERTIES:
Issue 1: 15 February 1984 Issue 2: 15 August 1994
liquid; d 0.8389 g/mL @ 20 °C; BP 52.5 °C; MP -88 °C; VP 28.5 kPa (214 mm Hg; 28% v/v) @ 20 °C; explosive range 2.8 to 31% v/v in air
SYNONYMS: 2-propenal; acrylicaldehyde; acrylaldehyde; allylaldehyde.
SAMPLING SAMPLER:
SOLID SORBENT TUBE (2-(hydroxymethyl)piperidine on XAD-2, 120 mg/60 mg)
FLOW RATE:
0.01 to 0.1 L/min
VOL-MIN: -MAX:
13 L @ 0.1 ppm 48 L
SHIPMENT:
routine
SAMPLE STABILITY:
at least 4 weeks @ 25 °C [1]
BLANKS:
MEASUREMENT TECHNIQUE:
GAS CHROMATOGRAPHY, NITROGENSPECIFIC DETECTOR
ANALYTE:
9-vinyl-1-aza-8-oxabicyclo[4.3.0]nonane
DESORPTION:
2 mL toluene; ultrasonic bath for 30 min
INJECTION VOLUME: 1 µL TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:
2 to 10 field blanks and 10 media blanks per set
CARRIER GAS:
Helium, 30 mL/min
COLUMN:
2 m x 2-mm glass, 5% SP-2401-DB on Supelcoport (100-120 mesh)
CALIBRATION:
acrolein spiked on coated sorbent
RANGE:
3 to 36 µg per sample
ACCURACY RANGE STUDIED:
0.12 to 1.50 mg/m 3 (24-L samples)
BIAS:
7.0%
ˆ ): 0.111 [1] OVERALL PRECISION (S rT ACCURACY:
± 29%
230 °C 250 °C 90 °C for 8 min; 20 °C/min; hold @ 200 °C for 11 min
ESTIMATED LOD: 2 µg per sample PRECISION (Sr):
not determined
APPLICABILITY: The working range is 0.05 to 0.2 ppm (0.13 to 0.5 mg/m 3) for a 24-L air sample. For STEL measurements, the limit of the method is 0.9 ppm for a 15-min sample at 0.1 L/min.
INTERFERENCES: None known. Peaks for acetaldehyde and formaldehyde oxazolidines may be observed in the chromatogram, but they are resolved from the acrolein peak. Capacity of the sampler is reduced if sampling in air containing acids [1] .
OTHER METHODS: This method was developed to give improved sample stability and to provide for ease of personal sampling compared to P&CAM 118 [2] and P&CAM 211 [2], which have not been revised.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
