METHYLCYCLOHEXANOL
CH3C6H10 OH
MW: 114.19
METHOD: 1404, Issue 1
1404
CAS: 25639-42-3
RTECS: GW0175000
EVALUATION: FULL
OSHA : 100 ppm NIOSH: 50 ppm ACGIH: 50 ppm (1 ppm = 4.67 mg/m 3 @ NTP)
Issue 1: 15 August 1994
PROPERTIES:
liquid; BP 155-180 °C; d 0.92 g/mL @ 20 °C; VP 0.2 kPa (1.5 mm Hg) @ 20 °C
SYNONYMS: hexahydromethylphenol; hexahydrocresol
SAMPLING SAMPLER:
CHARCOAL TUBE (coconut shell charcoal, 100/50 mg)
FLOW RATE:
0.01 to 0.2 L/min
VOL-MIN: -MAX:
1 L @ 100 ppm 15 L
SHIPMENT:
routine
MEASUREMENT TECHNIQUE:
GAS CHROMATOGRAPHY, FID
ANALYTE:
methylcyclohexanol
DESORPTION:
1.0 mL methylene chloride
INJECTION VOLUME:
5 µL
SAMPLE STABILITY:
at least 7 days @ 25 °C
TEMPERATURE-INJECTOR: -DETECTOR: -COLUMN:
BLANKS:
2 to 10 field blanks per set
COLUMN:
ACCURACY RANGE STUDIED:
215 to 920 mg/m 3 [1] (12-L samples)
BIAS:
± 2.9% [1]
ˆ ): OVERALL PRECISION (S rT
0.063 [1]
ACCURACY:
± 14.0%
230 °C 230 °C 140 °C
10% FFAP on 80/100 mesh Chromosorb W, 12 ft x 1/8 in stainless steel
CALIBRATION:
standard solutions of methylcyclohexanol in methylene chloride
RANGE:
0.55 to 17 mg per sample [1]
ESTIMATED LOD: 0.02 mg per sample [2] PRECISION (Sr):
0.019 @ 2.7 to 11.3 mg per sample [1]
APPLICABILITY: The working range is 10 to 300 ppm (46 to 1400 mg/m 3) for a 12-L air sample. Methylcyclohexanol is usually present as a 50:50 mixture of meta- and para- isomers.
INTERFERENCES: None identified.
OTHER METHODS: This revises Method S374 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
