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Chemical Sampling Information (CSI)
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General Description

Synonyms: TPP

OSHA IMIS Code Number: 2535

Chemical Abstracts Service (CAS) Registry Number: 115-86-6

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: TC8400000; 58933

Chemical Description and Physical Properties:

    Colorless solid with a faint, aromatic odor.

    molecular weight: 326
    boiling point: 698F
    melting point: 119F
    vapor pressure: very low mm

Incompatibilities: None hazardous

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

    General Industry: 3 mg/m3

    Construction Industry: 3 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 3 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 3 mg/m3 TWA

Health Factors

Potential Symptoms: Minor changes in blood enzymes; In animals: muscle weakness, paralysis

Health Effects: Cholinesterase inhibition (HE6)

Affected Organs: Blood

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 100 Liters
    maximum flow rate: 1.5 L/min
    current analytical method: Gas Chromatography; GC/FPD
    sampling and analytical error: 0.11
    method reference: 1 (NIOSH S-210)
    method classification: Fully Validated

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