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Chemical Sampling Information (CSI)
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General Description

Synonyms: Dibutyl acid o-phosphate; di-n-Butyl hydrogen phosphate; Dibutyl phosphoric acid; Dibutylphosphate

OSHA IMIS Code Number: 0863

Chemical Abstracts Service (CAS) Registry Number: 107-66-4

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TB9605000; 58782

Chemical Description and Physical Properties:

Colorless to brown, odorless liquid.
molecular weight: 210
vapor pressure: <1 mm
boiling point: >212°F

Incompatibilities: Strong oxidizers

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 1 ppm, 5 mg/m3
Construction Industry: 1 ppm, 5 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 ppm, 8.6 mg/m3 TWA; 2 ppm, 17 mg/m3 STEL

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1 ppm TWA, 2 ppm STEL

Health Factors

Potential Symptoms: Respiratory irritation; headaches; skin irritation

Health Effects: Irritation-Eye, Nose, Throat, Skin---Mild (HE16) Headaches (HE7)

Affected Organs: Respiratory system, skin

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Polytetrafluoroethylene (FA) Filter, 1.0 microns
    maximum volume: 250 Liters
    maximum flow rate: 3.0 L/min (TWA)
    maximum volume: 45 Liters
    maximum flow rate: 3.0 L/min (STEL)
    current analytical method: Gas Chromatography; GC/FPD
    method reference: 1 (NIOSH 5017 [17 KB PDF, 3 pages])
    sampling and analytical error: 0.09
    method classification: Fully Validated

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