Isoamyl acetate

  • Amyl acetate ester
  • 3-Methylbutyl ethanoate
  • Isopentyl acetate
  • 1-acetoxy-3-methylbutane
Formula
CH3COOCH2CH2CH(CH3)
Structure
Description
Colorless liquid with banana- or pear-like odor.
Uses
In alcohol soln as pear flavor in mineral waters & syrups, swelling bath sponges, dyeing & finishing textiles, solvent for old oil colors, tannins, nitrocellulose, lacquers, celluloid & camphor, covering unpleasant odors, perfuming shoe polish, manufacture artificial silk, leather, or pearls, photographic films, celluloid cements, waterproof varnishes, bronzing liquids, & metallic paints.

Registry Numbers and Inventories.
CAS
123-92-2
EC (EINECS/ELINCS)
204-662-3
EC Index Number
607-130-00-2
EC Class
Flammable; Repeated exposure may cause skin dryness or cracking
R 10 66
S 23.2 25
RTECS
NS9800000
RTECS class
Other
UN (DOT)
1104
Merck
12,5125
Beilstein/Gmelin
1744750
Beilstein Reference
4-02-00-00157
Swiss Giftliste 1
G-1124
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H14O2
Formula mass
130.19
Melting point, °C
-78
Boiling point, °C
142
Vapor pressure, mmHg
6 (25 C)
Vapor density (air=1)
4.5
Saturation Concentration
About 5000 ppm at 20 C (calc.)
Evaporization number
0.42 (butyl acetate = 1)
Odor Threshold Odor threshold Less than 100 ppm
Critical temperature
313
Critical pressure
27.24
Density
0.8837 g/cm3 (0 C)
Solubility in water
3 g/L
Viscosity
0.42 cp (77 C)
Surface tension
24.77 g/s2
Refractive index
1.4005 (20 C)
Dipole moment
1.77 D
Dielectric constant
4.79 (25 C)
Partition coefficient, pKow
2.25
Heat of vaporization
46.0 kJ/mol
Heat of combustion
-4372 kJ/mol

Hazards and Protection.
Storage
Protect against physical damage. Store in a cool, dry well-ventilated location, away from any area where the fire hazard may be acute. Outside or detached storage is preferred. Separate from incompatibles. Containers should be bonded and grounded for transfers to avoid static sparks. Storage and use areas should be No Smoking areas. Use non-sparking type tools and equipment, including explosion proof ventilation
B2 D2B
Handling
Wash thoroughly after handling. Wash hands before eating. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
A half-face respirator with an organic vapor cartridge and particulate filter (NIOSH type N95 or better filter) may be worn for up to ten times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face piece respirator with an organic vapor cartridge and particulate filter (NIOSH N 100 filter) may be worn up to 50 times the exposure limit, or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Scoop up with a nonsparking tool, then place into a suitable container for disposal. Remove all sources of ignition. Use a spark-proof tool.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, strong acids, strong bases, and reducing agents.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
25
Autoignition, °C
355
Upper exp. limit, %
7.5
Lower exp. limit, %
1
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Water may be ineffective. For large fires, use water spray, fog or alcohol-resistant foam. Cool containers with flooding quantities of water until well after fire is out.
Fire potential
Flammable liquid. Above flash point, vapor-air mixtures are explosive within flammable limits noted above.
Hazards
Flashback along vapor trail may occur. Vapor may explode if ignited in an enclosed area. When heated emits acrid fumes. When exposed to flames can react vigorously with reducing materials. Sensitive to static discharge.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
1
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 100 ppm (525 mg/m3) NIOSH REL: TWA 100 ppm (525 mg/m3) NIOSH IDLH: 1000 ppm
Poison_Class
5
Exposure effects
Prolonged or repeated skin exposure may cause severe irritation or dermatitis. Persons with pre-existing skin disorders or eye problems, or impaired liver, kidney or respiratory function may be more susceptible to the effects of the substance.
   Ingestion
Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation
Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. Affects central nervous system causing dizziness, incoordination and unconsciousness.
   Skin
Causes irritation to skin. Symptoms include redness, itching, and pain.
   Eyes
Causes irritation, redness, and pain

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. Give large quantities of water. Never give anything by mouth to an unconscious person. Get medical attention.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
   Skin
Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number
1104
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
IAT
 
HS Code
2915 39 30
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P