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n-Butyl Acetate

General Description

Synonyms: Acetic acid; Butyl ester; Butyl acetate; Butyl ethanoate

OSHA IMIS code: 0440

CAS number: 123-86-4

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
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
NIOSH 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
ACGIH TLV® (2015) (Butyl acetates, all isomers) 50 ppm (238 mg/m3) TWA 
150 ppm (712 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

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: 1,700 ppm (10% LEL)

Notes on other potential health effects and hazards:

  1. At temperatures above 22°C, explosive vapor/air mixtures may be formed (NIOSH/IPCS 2003).

Partial reference list:

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - n-Butyl Acetate. 2016.
  • NIOSH: Occupational Safety and Health Guideline for n-Butyl Acetate. 1992.
  • NIOSH/CEC/IPCS: International Chemical Safety Cards - n-Butyl acetate. November 26, 2003.

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