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Isobutyl Acetate

General Description

Synonyms: Isobutyl ester of acetic acid; 2-Methylpropyl acetate; 2-Methylpropyl ester of acetic acid; beta-Methylpropyl ethanoate

OSHA IMIS code: 1534

CAS number: 110-19-0

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 (700 mg/m3) TWA
HE15 -- eye and respiratory irritation
OSHA PEL - Construction Industry
See 29 CFR 1926.55 Appendix A
150 ppm (700 mg/m3) TWA
HE15 -- eye and respiratory irritation
OSHA PEL - Shipyard Employment
See 29 CFR 1915.1000 Table Z - Shipyards
150 ppm (700 mg/m3) TWA
HE15 -- eye and respiratory irritation
NIOSH REL 150 ppm (700 mg/m3) TWA HE7 -- headache, drowsiness
target organs: brain, central nervous system
HE15 -- eye and respiratory irritation
ACGIH TLV® (2015) (as Butyl acetates, all isomers) 50 ppm (238 mg/m3) TWA
150 ppm (712 mg/m3) STEL
HE15 -- eye and respiratory irritation
CAL/OSHA PELs 150 ppm (700 mg/m3) TWA HE15 -- eye and respiratory 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: 1,300 ppm (10% LEL)

Notes on other potential health effects and hazards:

  1. Vapor/air mixtures may be explosive (NIOSH/IPCS 2003).

Partial reference list:

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Isobutyl Acetate. 2016.
  • NIOSH: Occupational Health Guideline for Isobutyl Acetate. September 1978.
  • NIOSH/CEC/IPCS: International Chemical Safety CardsIsobutyl Acetate. November 26, 2003.

Chemical Sampling Information

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