1,1,2,2-TETRACHLOROETHANE
MW: 167.85
Cl2 CHCHCl2 METHOD: 2562, Issue 1
CAS: 79-34-5
RTECS: KI8575000
EVALUATION: PARTIAL
OSHA : 5 ppm (skin) NIOSH: 1 ppm; carcinogen; Group I Pesticide ACGIH: 1 ppm
2562
PROPERTIES:
Issue 1: 15 March 2003
liquid; d 1.586 g/mL @ 25 °C; BP 146.5 °C; MP G 44 °C; VP 0.8 kPa (6 mm Hg; 0.8% v/v) @ 25 °C; nonflammable
(1 ppm = 6.86 mg/m3 @ NTP)
SYNONYMS: acetylene tetrachloride; bonoform; 1,1-dichloro-2,2-dichloroethane
SAMPLING SAMPLER:
SOLID SORBENT TUBE (Anasorb CMS; 100/50 mg)
FLOW RATE:
0.01-0.2 L/min
VOL-MIN: -MAX:
3 L @ 5 ppm 30 L
SHIPMENT:
Routine
SAMPLE STABILITY:
28 days at 25 °C
BLANKS:
2 to 10 field blanks per set
MEASUREMENT TECHNIQUE:
GAS CHROMATOGRAPHY, FID
ANALYTE:
1,1,2,2-tetrachloroethane
DESORPTION:
1 mL CS2 ; stand 30 min
INJECTION VOLUME:
1 µL
TEMPERATURE -INJECTION: 250 °C -DETECTOR: 300 °C -COLUMN: 40 °C (1 min), 10 °C/min to 175 °C CARRIER GAS:
He, 2.8 mL/min
COLUMN:
Capillary, fused silica, 30 m x 0.32mm ID, 1.0-µm film, 100% dimethyl polysiloxane or equivalent
CALIBRATION:
Standard solutions of analyte in CS 2
OVERALL PRECISION (Ö r T ): Not determined
RANGE:
2.1 to 285.5 µg per sample [1]
ACCURACY:
ESTIMATED LOD: 0.6 µg per sample [1]
ACCURACY RANGE STUDIED:
Not studied
BIAS:
Not determined
Not determined
PRECISION ( þ r ):
1.6% @ 38.1 to 253.8 µg per sample [1]
APPLICABILITY: The working range is 0.031 to 4.17 ppm (0.21 to 28.6 mg/m3 ) for a 10-L air sample [1].
INTERFERENCES: Any compound with a similar retention time under these analytical conditions is considered to be an interference.
OTHER METHODS: This method updates NIOSH Method 1019 [2] through the use of a capillary column, incorporation of Anasorb CMS sorbent tubes, and lowered sampling and analytical range with accompanying lower LOD/LOQ values [1].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition
