ISOAMYL ACETATE (ISOPENTYL ACETATE) | Occupational Safety and Health Administration

ISOAMYL ACETATE (ISOPENTYL ACETATE)†

Chemical Identification
CAS #	123-92-2
Formula	C₇H₁₄O₂
Synonyms	banana oil; Isopentyl acetate; 3-methyl-1-butanol acetate; 3-methylbutyl ester of acetic acid; 3-methylbutyl ethanoate

Physical Properties
Physical description	Colorless liquid with a banana-like odor.
Boiling point	288°F	Molecular weight	130.018
Freezing point/melting point	-109°F	Vapor pressure	4 mmHg
Flash point	77°F	Vapor density	4.49
Specific gravity	0.876 at 59°F	Ionization potential
Lower explosive limit (LEL)	1% at 212°F	Upper explosive limit (UEL)	7.5%
NFPA health rating	1	NFPA fire rating	3
NFPA reactivity rating	0	NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	1530
Sampling group
Sampler/Sampling media	CSC tube (100/50 mg) [SKC 226-01]
Sampling time^*	240 min
Sampling volume (TWA)^*	24 L
Sampling flow rate (TWA)^*	0.1 L/min
Sampling volume (STEL/Peak/C)^*	1.5 L
Sampling flow rate (STEL/Peak/C)^*	0.1 L/min
Analytical method instruments	GC-FID
Method reference	OSHA PV2142 (partially validated)
Notes
Special requirements

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device	Detector tube
Model/Type	Gastec 147
Sampling information (see manufacturer instructions)	4 min per pump stroke, 2-200 ppm range, uncertainty 15% for 10-50 ppm, 10% for 50-200 ppm

**Exposure Limits**
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	100 ppm (525 mg/m³)	REL-TWA	100 ppm (525 mg/m³)	TLV-TWA	50 ppm [1997]	PEL-TWA	50 ppm (266 mg/m³)
PEL-STEL		REL-STEL		TLV-STEL	100 ppm [1997]	PEL-STEL	100 ppm (532 mg/m³)
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1.		Notes:		Notes:		Notes: as pentyl acetate
Health factors: See NIH-NLM PubChem.		IDLH	1000 ppm
Carcinogenic classifications: Not listed		Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

NOAA: CAMEO Chemicals - Iso-amyl acetate

NIOSH: Pocket Guide to Chemical Hazards - Isoamyl acetate

Literature References

ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Pentyl acetate, all isomers. See annual publication for most recent information.
Bensafi, M., Rouby, C., Farget, V., Bertrand, B., Vigouroux, M. and Holley, A.: Autonomic nervous system responses to odours: the role of pleasantness and arousal. Chem. Senses 27(8): 703-709, 2002.
Grossmann, N., Brin, I., Aizenbud, D., Sichel, J.Y., Gross-Isseroff, R. and Steiner, J.: Nasal aikrflow and olfactory function after the repair of cleft palate (with and without cleft lip). Oral. Surg. Oral Med. Oral Pathol. Oral Radiol. Endod. 100(5): 539-544, 2005.
Pohanish, R.P. (editor): Isoamyl Acetate. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 2. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 1319-1320.

Last Updated Date : 12/31/2020

ISOAMYL ACETATE (ISOPENTYL ACETATE)†

Chemical Identification

Physical Properties

Monitoring Methods Used by OSHA

Bulk/Wipe Method

On-Site Screening Techniques

Exposure Limits

Additional Resources and Literature References