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Octane

General Description

Synonyms: n-Octane

OSHA IMIS code: 1957

CAS number: 111-65-9

Exposure Limits and Health Effects (Updated September 6, 2012)

Standard Set By Exposure Limit Health Effect Codes -- Health Effects and Target Organs
OSHA PEL - General Industry
See 29 CFR 1910.1000 Table Z-1
500 ppm (2350 mg/m3) TWA
The PEL was developed from an analogy with heptane, pentane, and gasoline.
OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A
400 ppm (1900 mg/m3) TWA
HE8 -- narcosis
HE16 -- mucous membrane irritation
OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000 Table Z - Shipyards
400 ppm (1900 mg/m3) TWA
HE8 -- narcosis
HE16 -- mucous membrane irritation
NIOSH REL 75 ppm (350 mg/m3) TWA
385 ppm (1800 mg/m3) Ceiling (15 minutes)
HE8 -- narcosis
HE11 -- chemical pneumonia (from aspiration)
HE16 -- eye and nose irritation; dermatitis
ACGIH TLV® (1979) 300 ppm (1401 mg/m3) TWA HE8 -- narcosis
HE16 -- mucous membrane irritation
CAL/OSHA PELs 300 ppm (1450 mg/m3) TWA
375 ppm (1800 mg/m3) STEL
HE8 -- narcosis
HE16 -- mucous membrane irritation

Carcinogenic classification:

  • NTP: Not listed
  • IARC: Not listed
  • EPA: Not listed

EPA Inhalation Reference Concentration (RfC): Not established

ATSDR Inhalation Minimal Risk Levels (MRLs): Not established

NIOSH IDLH concentration: 1,000 ppm (10% LEL)

Notes on other potential health effects and hazards:

  1. Highly flammable and vapor/air mixtures are explosive (NIOSH/IPCS 1997).

Partial reference list:

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Octane, All Isomers. 2016.
  • NIOSH: Criteria for a Recommended Standard - Occupational Exposure to Alkanes (C5-C8). March 1977.
  • NIOSH: Occupational Health Guideline for Octane. September 1978.
  • NIOSH/CEC/IPCS: International Chemical Safety CardsOctane. August 10, 1997

Chemical Sampling Information

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