General Description
A clear liquid with a pungent odor. Flash point 20°F. Boiling point 75.7°F (Hawley's). Less dense than water and insoluble in water. Vapors heavier than air.
Reactivity Profile
A colorless liquid, BUTYRALDEHYDE(123-72-8) can react with oxidizing materials. In contact with strong acids or bases BUTYRALDEHYDE(123-72-8) will undergo an exothermic condensation reaction. The dry aldehyde may undergo some polymerization reaction. Reacts vigorously with chlorosulfonic acid, nitric acid, sulfuric acid (oleum). [Sax, 9th ed., 1996, p. 607].
Air & Water Reactions
Highly flammable. Insoluble in water.
Hazard
Flammable, dangerous fire risk.
Health Hazard
Inhalation will cause irritation and possibly nausea, vomiting, headache, and loss of consciousness. Contact with eyes causes burns. Skin contact may be irritating.
Fire Hazard
Behavior in Fire: Vapors are heavier than air and may travel considerable distance to a source of ignition and flash back. Fires are difficult to control due to ease of reignition.
First aid
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. Medical observation is recommended for 24 to 48 hours after breathing
overexposure, as pulmonary edema may be delayed. As
Shipping
UN1129 Butyraldehyde, Hazard Class: 3;
Labels: 3—Flammable liquid
Incompatibilities
May form explosive mixture with air.
Butyraldehyde can presumably form explosive peroxides,
and may polymerize due to heat or contact with acids or
alkalis. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine,
fluorine, etc.); contact may cause fires or explosions. Keep
away from alkaline materials, strong bases, strong acids,
oxoacids, epoxides, caustics, ammonia, aliphatic amines;
alkanolamines, aromatic amines. May accumulate static
electrical charges, and may cause ignition of its vapors.
Possible self-reaction in air; undergoes rapid oxidation to
Chemical Properties
Butyraldehyde has a characteristic pungent odor.
Chemical Properties
Butyraldehyde is a highly flammable, colorless liquid with a pungent odor.
Chemical Properties
colourless liquid with a very unpleasant smell
Waste Disposal
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.
Occurrence
Reported found in the essential oils from flowers, fruits, leaves or bark of Monarda fistulosa L., Litsea cubeba,
Bulgarian clary sage, cajeput, Eucalyptus cinerea, E. globules, and others, as well as in apple and strawberry aromas. Also reported
found in fresh apple, pears, carrots, peas, soybean, butter, milk, black tea, roast chicken, peanuts, loganberry, honey, white wine and
hog plums (Spondias mombins L.).
Uses
Butanal is used in the manufacture of rubber accelerators,
synthetic resins, solvents, and plasticizers. n-Butyraldehyde is
used as an intermediate in the manufacturing of plasticizers,
alcohols, solvents, and polymers (such as 2-ethylhexanol,
n-butanol, trimethylolpropane, n-butyric acid, polyvinyl butyral,
and methyl amyl ketone). It is also used as an intermediate
to make pharmaceuticals, agrochemicals, antioxidants, rubber
accelerators, textile auxiliaries, perfumery, and flavors. It has no
therapeutic use at the present time.
Uses
Chiefly in the manufacture of rubber accelerators, synthetic resins, solvents, plasticizers.
Uses
n-Butyraldehyde is used to make rubberaccelerators, synthetic resins, and plasticizers;and as a solvent.
Definition
ChEBI: A member of the class of butanals that consists of propane bearing a formyl substituent at the 1-position. The parent of the class of butanals.
Preparation
By dry distillation of calcium butyrate and calcium formate.
Aroma threshold values
Detection: 19 to 37 ppb; recognition: 11 to 27 ppb
Taste threshold values
Taste characteristics at 5 ppm: musty, fusel, fermented, bready and yeasty with a malty nuance.
Chemical Reactivity
Reactivity with Water No reaction; Reactivity with Common Materials: No reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent; Polymerization: May occur in the presence of heat, acids or alkalis; Inhibitor of Polymerization: Not pertinent.
Biochem/physiol Actions
Taste at 10 ppm
Potential Exposure
Mutagen,Human Data; Primary Irritant. Used in making syntheticresins, solvents, and plasticizers
Carcinogenicity
Although butyraldehyde interacts
with DNA, no experimental studies of its carcinogenic
potency were found.
Environmental Fate
Butanal does not possess high acute toxicity but is a potent
irritant of the skin, eyes, and upper respiratory tract. The
mechanism of toxicity probably involves direct reaction
between the active aldehyde group and cellular components.
storage
Color Code—Red: Flammability Hazard: Store ina flammable liquid storage area or approved cabinet awayfrom ignition sources and corrosive and reactive materials.Protect against physical damage. Before entering confinedspace where this chemical may be present, check to makesure that an explosive concentration does not exist. Outsideor detached storage is preferred. Prior to working withButyraldehyde you should be trained on its proper handlingand storage. Store in tightly closed containers in a cool,well-ventilated area away from incompatible materialslisted above. Metal containers involving the transfer of thischemical should be grounded and bonded. Drums must beequipped with self-closing valves, pressure vacuum bungs,and flame arresters. Use only nonsparking tools and equipment, especially when opening and closing containers ofthis chemical. Sources of ignition, such as smoking andopen flames, are prohibited where this chemical is used,handled, or stored in a manner that could create a potentialfire or explosion hazard.
Toxicity evaluation
The primary degradation process in soil is expected to
be biodegradation. A number of biological screening
studies have demonstrated that butyraldehyde is readily
biodegradable.
The major environmental fate processes for butyraldehyde in
water are biodegradation and volatilization. A number of
biological screening studies have demonstrated that butyraldehyde
is readily biodegradable. Volatilization half-lives of 9 h
and 4.1 days have been estimated for a model river (1-m deep)
and a model pond, respectively. Aquatic hydrolysis, adsorption
to sediment, and bioconcentration are not expected to be
important fate processes.
