DIBUTYL PHOSPHATE
(C4H9O2)(OH)P=O
MW: 210.21
METHOD: 5017, Issue 2
5017
CAS: 107-66-4
RTECS: TB9605000
EVALUATION: PARTIAL
OSHA : 1 ppm NIOSH: 1 ppm; STEL 2 ppm ACGIH: 1 ppm; STEL 2 ppm (1 ppm = 8.59 mg/m 3 @ NTP)
Issue 1: 15 May 1985 Issue 2: 15 August 1994
PROPERTIES:
liquid; d 1.06 g/mL; decomposes @ 100 °C; VP unknown
SYNONYMS: phosphoric acid dibutyl ester
SAMPLING
MEASUREMENT
SAMPLER:
FILTER (1.0-µm PTFE)
TECHNIQUE:
GAS CHROMATOGRAPHY, PHOSPHORUS FPD
FLOW RATE:
1 to 3 L/min
ANALYTE:
dibutyl trimethylsilyl phosphate
VOL-MIN: -MAX:
50 L @ 1 ppm 250 L
DESORPTION:
acetonitrile
DERIVATIZATION: SHIPMENT:
routine
N,O-bis(trimethylsilyl)tri fluoroacetamide (BSTFA)
SAMPLE STABILITY:
at least 7 days at room temperature [1]
BLANKS:
2 to 10 field blanks per set
INJECTION VOLUME: 1 µL CARRIER GAS:
He, 30 mL/min
TEMPERATURE-INJECTION: -DETECTOR: -COLUMN: ACCURACY RANGE STUDIED:
BIAS:
2.3 to 10 mg/m 3 [1] (180-L samples)
220 °C 210 °C 155 °C
COLUMN:
glass; 1.2 m x 6-mm OD; 3% OV-101 on 100/120 mesh Chromosorb WHP
CALIBRATION:
dibutyl phosphate in CH 3CN with internal standard
RANGE:
0.4 to 2 mg per sample
not determined
ˆ ): 0.057 [1] OVERALL PRECISION (S rT ESTIMATED LOD: 0.07 mg per sample [1] ACCURACY:
not determined PRECISION (Sr):
0.017 [1]
APPLICABILITY: The working range is 0.2 to 1.2 ppm (2 to 10 mg/m 3) for a 200-L air sample.
INTERFERENCES: None identified.
OTHER METHODS: This method revises P&CAM 297 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
