Page:NIOSH Manual of Analytical Methods - 2507EGDN.pdf/1

 ETHYLENE GLYCOL DINITRATE See NITROGLYCERINE (Method 2507) for Procedure

O2NOCH2CH2ONO2

MW: 152.06

METHOD: 2507, Issue 2

CAS: 628-96-6

EVALUATION: FULL

OSHA : C 0.2 mg/m 3 (skin) NIOSH: STEL 1 mg/m 3 (skin) ACGIH: 0.31 mg/m 3 (skin) (1 ppm = 6.22 mg/m 3 @ NTP)

PROPERTIES:

RTECS: KW5600000 Issue 1: 15 February 1984 Issue 2: 15 August 1994

liquid; MP -22 °C; explodes 114 °C; d 1.49 g/mL @ 25 °C; VP 6.8 Pa (0.05 mm Hg; 68 ppm) @ 20 °C

SYNONYMS: EGDN; ethylene dinitrate.

SAMPLING SAMPLER:

SOLID SAMPLER TUBE (Tenax-GC, 100 mg/50 mg)

FLOW RATE:

0.2 to 1.0 L/min

VOL-MIN: -MAX:

3 L @ 1 mg/m 3 100 L

SHIPMENT:

routine

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, ECD

ANALYTE:

EGDN

DESORPTION:

2 mL ethanol; stand 30 min

INJECTION VOLUME:

2 µL

SAMPLE STABILITY:

at least 25 days @ 25 °C [5]

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

BLANKS:

2 to 10 field blanks per set

CARRIER GAS:

95% argon/methane, 75 mL/min

COLUMN:

glass, 1 m x 4-mm, 2-mm ID 10% OV-17 on 60/80 mesh Gas Chrom Q

CALIBRATION:

solutions of EGDN in ethanol

RANGE:

3 to 45 µg per sample

ACCURACY RANGE STUDIED:

0.5 to 1.8 mg/m 3 [3]

BIAS:

-0.02%

160 °C 280 °C 125 °C

ESTIMATED LOD: 0.6 µg per sample

ˆ ): 0.089 [2] OVERALL PRECISION (S rT ACCURACY:

±20.3%

PRECISION (Sr):

0.063 [2]

APPLICABILITY: The working range is 0.03 to 0.5 ppm (0.2 to 3 mg/m 3) for a 15-L air sample, provided that the linear range of the ECD is not exceeded.

INTERFERENCES: A high concentration of 2-hydroxyethyl nitrate (ethylene glycol mononitrate) tails into the EGDN peak but does not prevent a satisfactory determination of EGDN.

OTHER METHODS: This method combines and replaces Methods S216 [2,5] and P&CAM 203 [4].

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