110-43-0

A clear colorless liquid. Flash point 126°F. Less dense than water and only slightly soluble in water. Hence floats on water. Vapors heavier than air. Density 6.8 lb/gal. Used as a synthetic flavoring and in perfumes.

AMYL METHYL KETONE(110-43-0) reacts exothermically with many acids and bases to produce flammable gases (e.g., H2). The heat may be sufficient to start a fire in the unreacted portion. Reacts with reducing agents such as hydrides, alkali metals, and nitrides to produce flammable gas and heat. Incompatible with isocyanates, aldehydes, cyanides, peroxides, and anhydrides. Incompatible with many oxidizing agents including nitric acid, nitric acid/hydrogen peroxide mixture, and perchloric acid. May form peroxides [USCG, 1999].

Flammable. Slightly soluble in water.

Moderate fire risk. Toxic by inhalation, skin and eye irritant, narcotic in high concentration.

Inhalation can cause headache, fatigue, nausea, vomiting, dizziness, stupor, drowsiness, disturbed vision, and unconsciousness. Skin contact can cause moderate irritation, defatting, and dermatitis. Ingestion may cause irritation of lips and mouth, gastro-intestinal irritation, nausea, diarrhea, drowsiness, loss of consciousness, weak and rapid pulse, cold-pale complexion.

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit.

UN1110 n-Amyl Methyl ketone, Hazard Class: 3; Labels: 3-Flammable liquid.

2-Heptanone has a characteristic banana, slightly spicy odor2-Heptanone may be prepared by oxidation of methyl n-amyl carbinol; also from n-amyl propionic acid or from ethyl butyl acetat.

2-Heptanone has a fruity, spicy, cinnamon, banana, slightly spicy odor.

colourless liquid

Methyl amyl ketone is a clear colorless liquid with a mild, banana-like odor.

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Colorless liquid with a banana-like odor. Can be detected at a concentration of 140 μg/kg (Buttery et al., 1969a). Cometto-Mu?iz et al. (2000) reported nasal pungency threshold concentrations ranging from approximately 195 to 935 ppm. An odor threshold concentration of 6.8 ppb_v was reported by Nagata and Takeuchi (1990).

Reported found in clove essential oil, Ceylon cinnamon and rancid coconut oil; also identifed in Ruta Montana Also reported found in banana, lingonberry, loganberry, black currant, guava, grapes, papaya, peach, pear, raspberry, other berries, strawberry jam, asparagus, roasted onion, leek, baked potato, mushroom, clove bud, ginger, blue, cheddar and Swiss cheeses, milk, cream, butter, fsh, meats, hop oil, beer, brandy, rum, malt whiskey, grape wines, cocoa, coffee, tea, peanuts, pecans, walnut, oats, soybeans, coconut oil, olive, passion fruit, mango, fgs, rice, sweet corn, corn tortillas, malt, caviar, shrimp, oysters, crab, crayfsh and mate

ChEBI: A dialkyl ketone with methyl and pentyl as the alkyl groups.

By oxidation of methyl n-amyl carbinol; also from n-amyl propionic acid or from ethyl butyl acetate.

Detection: 1 ppb to 1.33 ppm; recognition: 2.66 to 3.73 ppm; aroma characteristics at 1.0%: cheesy ketonic, slightly green waxy, banana fruity.

Taste characteristics at 20 ppm: cheesy, fruity, coconut, waxy green, creamy, fungal with buttery and brown fruity nuances.

Canadian Journal of Chemistry, 58, p. 2271, 1980 DOI: 10.1139/v80-365
Tetrahedron Letters, 35, p. 8835, 1994 DOI: 10.1016/S0040-4039(00)78511-X
Journal of the American Chemical Society, 102, p. 1047, 1980 DOI: 10.1021/ja00523a023

Combustible liquid, flash point (closed cup) 39.9°C (102°F), (open cup) 48.9°C (12°F); vapor density 3.9 (air = 1) vapor pressure 2.6 torr at 20°C (68°F); autoignition temperature 393°C (740°F); fire-extinguishing agent: “alcohol” foam; a water spray may be used to cool below its flash point.
Methyl amyl ketone forms an explosive mixture with air in the range 1.1% [at 66°C (150.8°F)] to 7.9% [at 121°C (249.8°F)] by volume. It can react explosively with strong acids, alkalies, and oxidizing agents.

Flammable

Primary Irritant. Methyl amyl ketone is used as a solvent in metal roll coatings and in synthetic resin finishes; as a solvent for nitrocellulose in lacquers and as a relatively inert reaction medium.

Identified as one of 140 volatile constituents in used soybean oils collected from a processing plant that fried various beef, chicken, and veal products (Takeoka et al., 1996). Also identified as a volatile constituent released by fresh coffee beans (Coffea canephora variety Robusta and Coffea arabica) at different stages of ripeness (Mathieu et al., 1998).

Biological. Heukelekian and Rand (1955) reported a 10-d BOD value of 0.50 g/g which is 17.8% of the ThOD value of 2.81 g/g.
Chemical/Physical. Atkinson et al. (2000) studied the kinetic and products of the gas-phase reaction of 2-heptanone with OH radicals in purified air at 25 °C and 740 mmHg. A relative rate constant of 1.17 x 10^-11 cm³/molecule·sec was calculated for this reaction. Reaction products identified by GC, FTIR, and atmospheric pressure ionization tandem mass spectroscopy were (with respective molar yields): formaldehyde, 0.38; acetaldehyde, λ0.05; propanal, λ0.05; butanal, 0.07; pentanal, 0.09; and molecular weight 175 organic nitrates.
2-Heptanone will not hydrolyze because it does not contain a hydrolyzable functional group. Burns in air releasing carbon monoxide and carbon dioxide.

Color Code—Red: Flammability Hazard: Store in a flammable liquid storage area or approved cabinet away from ignition sources and corrosive and reactive materials. Prior to working with this chemical you should be trained on its proper handling and storage. Before entering confined space where this chemical may be present, check to make sure that an explosive concentration does not exist. Methyl (n-amyl) ketone must be stored to avoid contact with oxidizers, such as perchlorates, peroxides, chlorates, nitrites, and permanganates, since violent reaction occur. Store in tightly closed containers in a cool, well-ventilated area away from heat or flame. Sources of ignition, such as smoking and open flames, are prohibited where methyl (n-amyl) ketone is used, handled, or stored in a manner that could create a potential fire or explosion hazard.

2-Heptanone is metabolized in the liver and causes toxicity by oxidative and free radical mechanisms. It is known to potentiate both nephrotoxic and hepatotoxic effects of halogenated hydrocarbons.

Forms explosive mixture with air. Strong acids, alkalis, oxidizers. Attacks some forms of plastics.

The ITSL for Methyl Amyl Ketone is 2330 μg/m3 with an 8 hour averaging time.