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HEXACHLORO-1,3-CYCLOPENTADIENE

C5Cl6

MW: 272.77

METHOD: 2518, Issue 2

CAS: 77-47-4

RTECS: GY1225000

EVALUATION: FULL

OSHA : no PEL NIOSH: 0.01 ppm; Group II Pesticide ACGIH: 0.01 ppm (1 ppm = 11.15 mg/m 3 @ NTP)

PROPERTIES:

2518

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

liquid; MP 10 °C; BP 239 °C; d 1.714 g/mL @ 15.5 °C; VP 13 Pa (0.1 mm Hg; 132 ppm) @ 25 °C

SYNONYMS: perchlorocyclopentadiene.

SAMPLING SAMPLER:

SOLID SORBENT TUBE (2 tubes, Porapak T, 75 mg and 25 mg)

FLOW RATE:

0.01 to 0.2 L/min

VOL-MIN: -MAX:

0.25 L @ 0.01 ppm 90 L

SHIPMENT:

separate tubes, seal, ship @ 25 °C; store @ 0 °C in the dark

SAMPLE STABILITY:

≥7 days @ 25 °C; ≥28 days @ 0 °C [1]

BLANKS:

2 to 10 field blanks per set

ACCURACY RANGE STUDIED:

13 to 873 µg/m 3 [1] (3-L samples)

BIAS:

- 0.3%

ˆ ): OVERALL PRECISION (S rT

0.082 [2]

ACCURACY:

± 16.4%

MEASUREMENT 63

TECHNIQUE:

GAS CHROMATOGRAPHY,

ANALYTE:

hexachloro-1,3-cyclopentadiene

DESORPTION:

1 mL hexane; ultrasonic bath 1 h

INJECTION VOLUME:

5 µL

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

Ni ECD

150 °C 250 °C 135 °C

CARRIER GAS:

5% CH 4/95% Ar, 30 mL/min

COLUMN:

glass, 2 m x 4-mm ID; 3% OV-1 on 100/120 Gas Chrom Q

CALIBRATION:

hexachloro-1,3-cyclopentadiene in hexane

RANGE:

25 to 140 ng per sample

ESTIMATED LOD: 5 ng per sample PRECISION (Sr):

0.030 [1]

APPLICABILITY: The working range is 0.005 to 0.2 ppm (5 to 2400 mg/m 3) for a 5-L air sample. Area samples from a municipal wastewater treatment plant were analyzed by a variation of this method [2].

INTERFERENCES: None identified.

OTHER METHODS: This revises P&CAM 308 [3] which was evaluated with a reference method which involved sampling with impingers of hexane and gas chromatography with electron capture detection [1].

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