Product Description of Butyl Acetate CAS#123-86-4
Butyl acetate is a carboxylic ester widely utilized in synthetic flavor and fragrance production. Appearing as a colorless transparent liquid with a rich fruity scent, it mixes freely with ethanol, ether and most organic solvents, and dissolves only sparingly in water. Its vapors produce mild anesthetic effects, with a permissible airborne concentration of 0.2 g/L. This ingredient delivers a prominent fruity aroma that develops pleasant pineapple and banana nuances after dilution, despite its relatively weak odor retention.
Found naturally in numerous fruits and vegetables, butyl acetate is primarily applied in food flavor formulations, with limited usage in home and personal care fragrances. It has four naturally occurring isomers: n-butyl acetate, isobutyl acetate, sec-butyl acetate and tert-butyl acetate, among which n-butyl acetate and isobutyl acetate have the highest commercial value.
n-Butyl acetate is a highly volatile, flammable, colorless transparent liquid with a distinct fruity fragrance and a pungent-then-sweet taste. It naturally exists in apples, bananas, cherries, grapes, peaches, plums, pears, tomatoes and cocoa beans.
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Butyl acetate Chemical Properties
| Melting point | -78 °C (lit.) |
| Boiling point | 124-126 °C (lit.) |
| density | 0.88 g/mL at 25 °C (lit.) |
| vapor density | 4 (vs air) |
| vapor pressure | 15 mm Hg ( 25 °C) |
| refractive index | n20/D 1.394(lit.) |
| FEMA | 2174 | BUTYL ACETATE |
| Fp | 74 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | 5.3g/l |
| form | Liquid |
| color | ≤10(APHA) |
| Specific Gravity | 0.883 (20/20℃) |
| Odor | Characteristic; agreeable fruity (in low concentrations); non residual. |
| PH | 6.2 (5.3g/l, H2O, 20℃)(External MSDS) |
| explosive limit | 1.4-7.5%(V) |
| Odor Threshold | 0.016ppm |
| Odor Type | ethereal |
| Water Solubility | 0.7 g/100 mL (20 ºC) |
| FreezingPoint | -77.9℃ |
| λmax | λ: 254 nm Amax: 1.0 |
| λ: 260 nm Amax: 0.20 | |
| λ: 275 nm Amax: 0.04 | |
| λ: 300 nm Amax: 0.02 | |
| λ: 320-400 nm Amax: 0.01 | |
| JECFA Number | 127 |
| Merck | 141535 |
| BRN | 1741921 |
| Henry's Law Constant | 5.79 at 37 °C (static headspace-GC, van Ruth et al., 2001) |
| Exposure limits | TLV-TWA 150 ppm (～710 mg/m3) (ACGIH, MSHA, and OSHA); TLV-STEL 200 ppm (～950 mg/m3); IDLH 10,000 ppm (NIOSH). |
| Dielectric constant | 5.0（20℃） |
| Stability: | Stable. Flammable. Incompatible with strong oxidizing agents, strong acids, strong bases. |
| InChIKey | DKPFZGUDAPQIHT-UHFFFAOYSA-N |
| LogP | 1.82-2.3 at 25℃ |
| CAS DataBase Reference | 123-86-4(CAS DataBase Reference) |
| NIST Chemistry Reference | Acetic acid, butyl ester(123-86-4) |
| EPA Substance Registry System | n-Butyl acetate (123-86-4) |
Safety Information
| Risk Statements | 10-66-67-R67-R66-R10 |
| Safety Statements | 25-S25 |
| RIDADR | UN 1123 3/PG 3 |
| OEB | A |
| OEL | TWA: 150 ppm (710 mg/m3), STEL: 200 ppm (950 mg/m3) |
| WGK Germany | 1 |
| RTECS | AF7350000 |
| Autoignition Temperature | 790 °F |
| TSCA | Yes |
| HS Code | 2915 33 00 |
| HazardClass | 3 |
| PackingGroup | III |
| Hazardous Substances Data | 123-86-4(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 14.13 g/kg (Smyth) |
| IDLA | 1,700 ppm |
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Product Application of Butyl Acetate CAS#123-86-4
n-Butyl acetate, or simply butyl acetate, is a common flavoring material. This clear, colorless liquid carries a rich fruity scent. It barely dissolves in water yet mixes well with alcohol, ether and propylene glycol, ideal for diverse flavor formulas..
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