n-Amyl acetate

May 1994

Immediately Dangerous to Life or Health Concentrations (IDLH)

CAS number: 628-63-7

NIOSH REL: 100 ppm (525 mg/m3) TWA

Current OSHA PEL: 100 ppm (525 mg/m3) TWA

1989 OSHA PEL: Same as current PEL

1993-1994 ACGIH TLV: 100 ppm (532 mg/m3) TWA

Description of substance: Colorless liquid with a persistent banana-like odor.

LEL: 1.1% (10% LEL, 1,100 ppm)

Original (SCP) IDLH: 4,000 ppm

Basis for original (SCP) IDLH: The chosen IDLH is based on the statement by Browning [1965] that exposure to 4,000 ppm of a mixture of n-amyl acetate and isoamyl acetate produced complete loss of reflexes in rabbits within an hour [Koelsch 1912], and on the statement by Sax [1975] that 5,000 ppm n-amyl acetate produced deep narcosis in cats in 30 minutes.

Short-term exposure guidelines: None developed

ACUTE TOXICITY DATA

Lethal concentration data:

					Adjusted
		LC50	LCLo		0.5-hr	Derived
Species	Reference	(ppm)	(ppm)	Time	LC (CF)	Value
Rat	NPIRI 1974	—–	5,200	?	?	?

Lethal dose data:

			LD50	LDLo		Derived
Species	Reference	Route	(Mg/kg)	(mg/kg)	Adjusted LD	Value
Rabbit	Marhold 1986	oral	7,400	—–	9,575 ppm	958 ppm
Rat	NPIRI 1974	oral	6,500	—–	8,410 ppm	841 ppm

Other animal data: RD50 (mouse), 1,531 ppm [Alarie 1981].

Human data: Somnolence has been reported after exposure to 952 ppm for 30 minutes [Lehmann 1913].

Revised IDLH: 1,000 ppmBasis for revised IDLH: The revised IDLH for n-amyl acetate is 1,000 ppm based on acute toxicity data in humans [Lehmann 1913] and animals [Alarie 1981; Marhold 1986].

References:

Alarie Y [1981]. Dose-response analysis in animal studies: prediction of human responses. Environ Health Perspect 42:9-13.
Browning E [1965]. Toxicity and metabolism of industrial solvents. New York, NY: Elsevier Publishing Company, p. 539.
Koelsch [1912]. Damage to health by amyl acetate. Concordia No. 12.
Lehmann KB [1913]. Experimentelle studien uber den einflufs technisch wichtiger gase und dampfe auf den organimus (XXXII/XXXIII). Amylazetat und cyclohexanolazetat. Arch Hyg 78:260-273 (in German).
Marhold J [1986]. Prehled prumyslove toxikologie: organicke latky. Prague, Czechoslovakia: Avicenum, p. 357 (in Czechoslovakian).
NPIRI [1974]. Raw materials data handbook, physical and chemical properties, fire hazard and health hazard data. Vol. 1. Organic solvents. Bethlehem, PA: National Printing Ink Research Institute, p. 3.
Sax NI [1975]. Dangerous properties of industrial materials. 4th ed. New York, NY: Van Nostrand Reinhold Company, Inc., p. 398.