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n-Butyl Acetate

General Description

  • Synonyms: Acetic acid; Butyl ester; Butyl acetate; Butyl ethanoate
  • OSHA IMIS Code Number: 0440
  • Chemical Abstracts Service (CAS) Registry Number: 123-86-4
  • NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: AF7350000
  • Department of Transportation Regulation Number (49 CFR 172.101) and Emergency Response Guidebook: 1123 129
  • NIOSH Pocket Guide to Chemical Hazards, n-Butyl Acetate: Physical description, chemical properties, potentially hazardous incompatibilities, and more

Exposure Limits

Exposure Limit Limit Values HE Codes Health Factors and Target Organs

OSHA Permissible Exposure Limit (PEL) - General Industry
See 29 CFR 1910.1000 Table Z-1

150 ppm
(710 mg/m3) TWA

HE8

Narcosis
HE15 Eye and mucous membrane irritation

OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A

150 ppm
(710 mg/m3) TWA

HE8

Narcosis

HE15 Eye and mucous membrane irritation

OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000 Table Z-Shipyards

150 ppm
(710 mg/m3) TWA

HE8

Narcosis

HE15 Eye and mucous membrane irritation

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL)

150 ppm
(710 mg/m3) TWA

200 ppm
(950 mg/m3) STEL

HE7

Headache, dizziness, confusion
Target organs: Brain, central nervous system

HE8 Narcosis
HE15 Eye and mucous membrane irritation

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV) (2001)

150 ppm
(713 mg/m3) TWA

200 ppm
(950 mg/m3) STEL

HE15

Eye and mucous membrane irritation

CAL/OSHA PELs

150 ppm
(710 mg/m3) TWA

200 ppm
(950 mg/m3) STEL

HE15

Eye and mucous membrane irritation

  • National Toxicology Program (NTP) carcinogenic classification: Not listed
  • International Agency for Research on Cancer (IARC): Not listed
  • U.S. Environmental Protection Agency (EPA) carcinogenic classification: Not listed
  • EPA Inhalation Reference Concentration (RfC): Not established
  • Agency for Toxic Substances and Disease Registry (ATSDR) Inhalation Minimal Risk Level (MRL): Not established
  • NIOSH Immediately Dangerous to Life or Health (IDLH) concentration: 1,700 ppm (10% LEL)
  • Notes on Other Potential Health Effects and Hazards
    1. At temperatures above 22ºC, explosive vapor/air mixtures may be formed (NIOSH/IPCS 2003).
  • Date last revised: 09/06/2012
  • Literature Basis
    • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - n-Butyl Acetate. 2001.
    • NIOSH: Occupational Safety and Health Guideline for n-Butyl Acetate. 1992.
    • NIOSH/IPCS: International Chemical Safety Cards - n-Butyl acetate. November 26, 2003.

Monitoring Methods used by OSHA

Laboratory Sampling/Analytical Method:
  • Charcoal Tube (100/50 mg sections, 20/40 mesh)
  • maximum volume: 12 Liters
  • maximum flow rate: 0.05 L/min (TWA)
  • maximum volume:0.75 Liters
  • maximum flow rate: 0.05 L/min (STEL)
  • current analytical method: Gas Chromatography; GC/FID
  • analytical solvent: Carbon Disulfide
  • method reference: OSHA Analytical Method (OSHA 1009)
  • method classification: Fully Validated
  • Diffusive Sampler:
    • 3M 3520 Organic Vapor Monitor;
    • SKC 575-002 Passive Sampler
  • minimum time: 15 to 240 Minutes
  • current analytical method: Gas Chromatography; GC/FID
  • method reference: OSHA Analytical Method (OSHA 1009)
  • analytical solvent: Carbon Disulfide
  • method classification: Fully Validated
  • note: Persons using diffusive samplers to monitor workplace air must ensure that the sampling devices are properly closed before transporting such devices to the laboratory for analysis. The device will continue to sample until properly closed. Diffusive sampler accessories used for analysis of samplers must be included with transported samples. Persons using such devices must provide sampling-site station barometric pressure and temperature to the analytical laboratory to improve accuracy of sampling results.
  • Charcoal Tube (100/50 mg sections, 20/40 mesh)
  • maximum volume: 10 Liters
  • maximum flow rate: 0.2 L/min (TWA)
  • maximum volume: 3 Liters
  • maximum flow rate: 0.2 L/min (STEL)
  • current analytical method: Gas Chromatography; GC/FID
  • analytical solvent: (99:1) Carbon Disulfide:Dimethylformamide
  • method reference: NIOSH Analytical Method (NIOSH 1450 (PDF))
  • method classification: Fully Validated
  • note: Samples should be refrigerated as soon as possible after sampling and sent cold to the laboratory.

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