n-Amyl acetate

  • n-Pentyl acetate
  • Pentyl acetate
  • Acetic acid, 1-pentyl ester
Formula CH3COO(CH2)4CH3
Description Pure n-amyl acetate is a clear, colorless liquid. Commercial grades may be yellow. All grades have a banana-like odor.
Uses Solvent for lacquers & paints, extraction of penicillin, photographic film, leather polishes, nail polish, as warning odor, flavoring agent, printing & finishing fabrics, solvent for phosphors in fluorescent lamps. Commercial grade.

Registry Numbers and Inventories.
CAS 628-63-7
EC (EINECS/ELINCS) 211-047-3
EC Index Number 607-130-00-2
EC Class Flammable; Repeated exposure may cause skin dryness or cracking
EC Risk Phrase R 10 66
EC Safety Phrase S 23 25
RTECS AJ1925000
RTECS class Human Data; Primary Irritant
UN (DOT) 1104
Beilstein/Gmelin 1744753
Beilstein Reference 4-02-00-00152
Swiss Giftliste 1 G-3091
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 0.6 To 39 mg/m3
Formula C7H14O2
Formula mass 130.19
Melting point, C -71
Boiling point, C 149
Vapor pressure, mmHg 4
Vapor density (air=1) 4.5
Saturation Concentration 6600 ppm at 25 C (calculated)
Evaporization number 0.42 (n-butyl acetate = 1)
Critical temperature 325
Critical pressure 26.50
Density 0.876 g/cm3 (20 C)
Solubility in water Slightly soluble
Viscosity 0.87 cp (25 C)
Surface tension 12 g/s2
Refractive index 1.4023 (20 C)
Partition coefficient, pKow 2.30
Heat of vaporization 48.00 kJ/mol
Heat of combustion -4215 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling Wash thoroughly after handling. 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. Avoid contact with skin and eyes. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. 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 respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant a respirator's use.
Small spills/leaks Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code 1
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizing agents, strong bases.
Decomposition Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Flash Point,C 23
Autoignition, C 375
Upper exp. limit, % 7.5
Lower exp. limit, % 1.1
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Water runoff can cause environmental damage. Dike and collect water used to fight fire. Combustion generates toxic fumes. Will burn if involved in a fire. 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. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential HIGHLY FLAMMABLE.
Hazards Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products Fire may produce irritating, corrosive and/or toxic gases.
NFPA Health 2
  Flammability 3  
  Reactivity 0  

Exposure limit(s) TLV: 100 ppm; 532 mg/m3 (as TWA) (ACGIH 1993-1994). 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 contact may cause dermatitis. Chronic exposure may cause liver damage. Chronic exposure will cause neurological degradation and/or abnormalities.
   Ingestion May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause effects similar to those for inhalation exposure. Ingestion of large amounts may cause CNS depression.
   Inhalation Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. May cause liver abnormalities. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause cardiac abnormalities. Causes irritation of the mucous membrane and upper respiratory tract. May cause burning sensation in the chest.
   Skin May cause skin irritation. May be absorbed through the skin. May cause cyanosis of the extremities.
   Eyes Causes eye irritation. May cause chemical conjunctivitis and corneal damage.

First aid
   Ingestion Do NOT induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid.
   Inhalation Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. 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.

UN number 1104
Response guide 129
Hazard class 3
Packing Group III  
USCG Compatatibility Group 34 Esters
HS Code 2915 39 30  
Std. Transport # 4909111  
IMO Chemical Code 17
IMO Pollution Category C
IMO Hazard code P