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Chemical Sampling Information (CSI)
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General Description

Synonyms: Di-n-Butyl Phthalate; o-Benzenecarboxylic Acid, Dibutyl Ester; DBP; Dibutylphthalate

OSHA IMIS Code Number: 0864

Chemical Abstracts Service (CAS) Registry Number: 84-74-2

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TI0875000; 59814

Chemical Description and Physical Properties:
Colorless, oily liquid with a very weak, aromatic odor.
molecular weight: 278
boiling point: 635°F
vapor pressure: <0.01 mm
melting point: -35°F
Incompatibilities: Nitrates; strong oxidizers, alkalies, and acids

Exposure Limits

OSHA Permissible Exposure Limit (PEL):
General Industry: 5.0 mg/m3

Construction Industry: 9 mg/m3 TWA
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 5 mg/m3 TWA

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 5 mg/m3 TWA

Health Factors

Potential Symptoms: Upper respiratory, and stomach irritation

Health Effects: Suspect teratogen (HE5) Irritation-Eyes, Throat---Mild (HE16)

Affected Organs: Respiratory system, GI tract

NIOSH/OSHA/DOE Health Guideline: Dibutyl Phthalate

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: OSHA Versatile Sampler (OVS-Tenax) - 13 mm Tenax Tube (140/70 mg sections) with a Glass Fiber filter enclosed
    analytical solvent: Toluene
    maximum volume: 240 Liters
    maximum flow rate: 1.0 L/min
    current analytical method: Gas Chromatography; GC/FID
    method reference: 2 OSHA 104
    sampling and analytical error: 0.09
    method classification: Fully Validated
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