Page:NIOSH Manual of Analytical Methods - 1010.pdf/1

 Rh CH2OCHCH2Cl

METHOD: 1010, Issue 2 Rh

5 ppm (skin) lowest feasible (carcinogen) 2 ppm (skin) (carcinogen) (1 ppm = 3.78 mg/m3 @ NTP

liquid; d 1.1812 g/mL @ 20 °C; BP 117.9 °C; MP 25.6 °C; VP 1.67 kPa (12.5 mm Hg; 16,400 ppm) @ 20 °C; explosive range

SYNONYMS: chloropropylene oxide; 1-chloro-2,3-epoxypropane; chloromethyloxirane

SAMPLING

SOLID SORBENT TUBE (coconut shell charcoal, 100 mg/50 mg) 0.01 to 0.2 L/min 2 L @ 5 ppm 30 L routine at least 2 weeks @ 25 C [1] 2 to 10 field blanks per set

ACCURACY

12 to 43 mg/m3 [2] (20-L samples) 4.2% 0.057 [2] ± 14.3% MEASUREMENT GAS CHROMATOGRAPHY, FID epichlorohydrin 1 mL CS2; stand 30 min 5 µL 175 °C 215 °C 135 °C N2 or He, 20 mL/min 1.8 m x 2-mm ID glass; 80/100 Chromosorb 101 [1] epichlorohydrin in CS2 0.04 to 1.2 mg per sample [2] 1.0 µg per sample 0.031 [2]

APPLICABILITY: The working range is 0.5 to 16 ppm (2 to 60 mg/m3) for a 20-L air sample.

INTERFERENCES: None identified.

OTHER METHODS: This is Method S118 in a revised format [3]. A similar method appears in the criteria document [4].