Butyl acetate

  • n-Butyl Acetate
  • Acetic acid n-butyl ester
Formula
CH3COO(CH2)3CH3
Structure
Description
Colorless liquid with a fruity, banana-like odor, agreeable in low concentrations, but not very pleasant at higher levels.
Uses
Manufacture lacquer, artificial leather, photographic films, plastics, safety glass.

Registry Numbers and Inventories.
CAS
123-86-4
EC (EINECS/ELINCS)
204-658-1
EC Index Number
607-025-00-1
EC Class
Flammable; Repeated exposure may cause skin dryness or cracking; Vapours may cause drowsiness and dizziness
R 10 66 67
RTECS
AF7350000
RTECS class
Reproductive Effector; Human Data; Primary Irritant
UN (DOT)
1123
Merck
13,1534
Beilstein/Gmelin
1741921
Beilstein Reference
4-02-00-00143
Swiss Giftliste 1
G-1320
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H12O2
Formula mass
116.16
Melting point, °C
-76
Boiling point, °C
126
Vapor pressure, mmHg
15 (25 C)
Vapor density (air=1)
4.0
Saturation Concentration
13160 ppm (1.32%) at 20 C; 19740 ppm (approx. 2%) at 25 C (calculated)
Evaporization number
1.0 (butyl acetate = 1)
Odor Threshold Odor threshold 7 ppm
Critical temperature
303
Critical pressure
30.50
Density
0.875 g/cm3 (20 C)
Solubility in water
0.83 g/100 mL
Viscosity
0.63 cp (30 C)
Surface tension
24.8 g/s2 (0 C)
Refractive index
1.3939 (20 C)
Dipole moment
1.84 D (22 C)
Dielectric constant
5 (20 C)
Partition coefficient, pKow
1.78
Heat of vaporization
43.6 kJ/mol
Heat of combustion
-3508 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.
B2 D2B
Handling
Wash thoroughly after handling. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. 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 gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Use water spray to disperse the gas/vapor. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Stability
Stable at room temperature in closed containers under normal storage and handling conditions. Forms explosive mixtures with air(72F/22C).
Incompatibilities
Water, strong oxidizing agents, strong acids, nitrates, caustics, potassium-tert-butoxide.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
25
Autoignition, °C
370
Upper exp. limit, %
7.5
Lower exp. limit, %
1.4
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. May accumulate static electrical charges, and may cause ignition of its own vapors. 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. Use foam, dry chemical, or carbon dioxide.
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
Toxic vapors and gases (such as carbon monoxide) may be released in a fire involving butyl acetate.
Health
2
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
OSHA PEL: TWA 150 ppm (710 mg/m3) NIOSH REL: TWA 150 ppm (710 mg/m3) ST 200 ppm (950 mg/m3) NIOSH IDLH: 1700 ppm LEL
Poison_Class
5
Exposure effects
Prolonged or repeated skin contact may cause defatting and dermatitis. May cause liver and kidney damage. May cause fetal effects.
   Ingestion
May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. Ingestion of large amounts may cause CNS depression.
   Inhalation
May cause respiratory tract irritation. May cause effects similar to those described for ingestion. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause burning sensation in the chest.
   Skin
May cause skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis. May cause irritation and dermatitis. May cause cyanosis of the extremities.
   Eyes
Vapors may cause eye irritation. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
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 immediately.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   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.

Transport.
UN number
1123
Response guide
Hazard class
3
Packing Group
II; III
 
USCG CHRIS Code
BCN
 
HS Code
2915 33 00
 
Std. Transport #
4909128 4909116
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
P