Sec-Amyl acetate

*sec*-Amyl acetate
Names
	Preferred IUPAC name Pentan-2-yl acetate
	Other names 1-Methylbutyl acetate; 2-Pentanol acetate; 2-Pentyl ester of acetic acid
Identifiers
CAS Number	626-38-0 ;
3D model (JSmol)	Interactive image ;
ChemSpider	11775 ;
ECHA InfoCard	100.009.952
PubChem CID	12278 ;
UNII	B570113U4Q ;
CompTox Dashboard (EPA)	DTXSID8052306 ;
	InChI InChI=1S/C7H14O2/c1-4-5-6(2)9-7(3)8/h6H,4-5H2,1-3H3 Key: GQKZRWSUJHVIPE-UHFFFAOYSA-N; InChI=1/C7H14O2/c1-4-5-6(2)9-7(3)8/h6H,4-5H2,1-3H3 Key: GQKZRWSUJHVIPE-UHFFFAOYAN;
	SMILES CCCC(C)OC(C)=O;
Properties
Chemical formula	C7H14O2
Molar mass	130.187 g·mol−1
Appearance	Colorless liquid
Odor	Mild, like bananas
Density	0.87 g/mL (20°C)
Melting point	−78 °C; −109 °F; 195 K
Boiling point	121 °C; 249 °F; 394 K
Solubility in water	0.2g/100g water (20°C)
Vapor pressure	7 mmHg (20°C)
Hazards
	GHS labelling:
Signal word	Warning
Hazard statements	H226
Flash point	32 °C; 89 °F; 305 K
Autoignition; temperature	380 °C (716 °F; 653 K)
Explosive limits	1–7.5% (20°C)
	Lethal dose or concentration (LD, LC):
LCLo (lowest published)	9200 ppm (guinea pig, 7 hr); 10,000 ppm (guinea pig, 5 hr)
	NIOSH (US health exposure limits):
PEL (Permissible)	TWA 125 ppm (650 mg/m3)
REL (Recommended)	TWA 125 ppm (650 mg/m3)
IDLH (Immediate danger)	1000 ppm
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Last updated July 16, 2025

sec-Amyl acetate is an organic compound and an ester. It is formed in an esterification reaction of sec-amyl alcohol (2-pentanol) and acetic acid.^[2] It is a colorless liquid.

References

1 2 3 4 5 6 7 8 9 10 11 NIOSH Pocket Guide to Chemical Hazards. "#0032". National Institute for Occupational Safety and Health (NIOSH).
1 2 3 4 5 "2-Pentyl Acetate". PubChem. NCBI. Archived from the original on October 11, 2015.
↑ "sec-Amyl acetate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

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[PGCH-1] 1 2 3 4 5 6 7 8 9 10 11 NIOSH Pocket Guide to Chemical Hazards. "#0032". National Institute for Occupational Safety and Health (NIOSH).

[pubchem-2] 1 2 3 4 5 "2-Pentyl Acetate". PubChem. NCBI. Archived from the original on October 11, 2015.

[3] "sec-Amyl acetate". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).

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[2]

[3]

v t e Esters
Methyl esters	Methyl formate Methyl acetate Methyl propionate Methyl butyrate Methyl pentanoate Methyl hexanoate Methyl benzoate
Ethyl esters	Ethyl formate Ethyl acetate Ethyl propionate Ethyl butyrate Ethyl pentanoate Ethyl hexanoate Ethyl heptanoate Ethyl octanoate Ethyl decanoate Ethyl palmitate Ethyl benzoate
Propyl esters	Propyl acetate Propyl propanoate Propyl benzoate Isopropyl acetate Isopropyl palmitate
Butyl esters	Butyl acetate Butyl butyrate Isobutyl acetate sec-Butyl acetate tert-Butyl acetate
Amyl esters	Amyl acetate Pentyl propanoate Pentyl butyrate Pentyl pentanoate Pentyl hexanoate Isoamyl formate Isoamyl acetate Sec-Amyl acetate
Hexyl esters	Hexyl acetate
Phenyl esters	Phenyl acetate
Heptyl esters	Heptyl acetate Heptyl butyrate
Benzyl esters	Benzyl acetate Benzyl benzoate

Names

Preferred IUPAC name Pentan-2-yl acetate
Other names 1-Methylbutyl acetate 2-Pentanol acetate 2-Pentyl ester of acetic acid
Identifiers
CAS Number	626-38-0 ^Y
3D model (JSmol)	Interactive image
ChemSpider	11775
ECHA InfoCard	100.009.952
PubChem CID	12278
UNII	B570113U4Q ^Y
CompTox Dashboard (EPA)	DTXSID8052306
InChI InChI=1S/C7H14O2/c1-4-5-6(2)9-7(3)8/h6H,4-5H2,1-3H3 Key: GQKZRWSUJHVIPE-UHFFFAOYSA-N InChI=1/C7H14O2/c1-4-5-6(2)9-7(3)8/h6H,4-5H2,1-3H3 Key: GQKZRWSUJHVIPE-UHFFFAOYAN
SMILES CCCC(C)OC(C)=O
Properties
Chemical formula	C₇H₁₄O₂
Molar mass	130.187 g·mol⁻¹
Appearance	Colorless liquid^[1]
Odor	Mild,^[1] like bananas ^[2]
Density	0.87 g/mL (20°C)^[1]
Melting point	−78 °C; −109 °F; 195 K^[1]
Boiling point	121 °C; 249 °F; 394 K^[1]
Solubility in water	0.2g/100g water (20°C)^[2]
Vapor pressure	7 mmHg (20°C)^[1]
Hazards
GHS labelling:
Signal word	Warning^[2]
Hazard statements	H226^[2]
Flash point	32 °C; 89 °F; 305 K^[1]
Autoignition temperature	380 °C (716 °F; 653 K)
Explosive limits	1–7.5% (20°C)^[1]
Lethal dose or concentration (LD, LC):
LC_Lo (lowest published)	9200 ppm (guinea pig, 7 hr) 10,000 ppm (guinea pig, 5 hr)^[3]
NIOSH (US health exposure limits):
PEL (Permissible)	TWA 125 ppm (650 mg/m³)^[1]
REL (Recommended)	TWA 125 ppm (650 mg/m³)^[1]
IDLH (Immediate danger)	1000 ppm^[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references