Isobutyl acrylate

  • Acrylic acid, isobutyl ester
  • Isobutyl propenoate
  • 2-Propenoic acid, 2-methylpropyl ester
Formula
C7H12O2
Structure
Description
A clear colorless liquid with an acrid odor.
Uses
Chemical intermediate for polymers, comonomer in acrylic surface coatings.

Registry Numbers and Inventories.
CAS
106-63-8
EC (EINECS/ELINCS)
203-417-8
EC Index Number
607-115-00-0
EC Class
Flammable; Harmful; Irritant; Sensitising
R 10 20/21 38 43
S 9 24 37
RTECS
AT2100000
RTECS class
Primary Irritant
UN (DOT)
2527
Beilstein/Gmelin
1749388
Beilstein Reference
4-02-00-01465
Swiss Giftliste 1
G-7307
Canada DSL/NDSL
NDSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C7H12O2
Formula mass
128.19
Melting point, °C
-61.1
Boiling point, °C
132
Vapor pressure, mmHg
9 (25 C)
Vapor density (air=1)
4.42
Odor Threshold Odor threshold 2 ppb
Critical temperature
315
Critical pressure
3.0
Density
0.889 g/cm3 (20 C)
Solubility in water
Slightly soluble
Viscosity
0.822 cp at 70 deg f
Surface tension
2.47 g/s2
Refractive index
1.405 (20 C)
Partition coefficient, pKow
2.22
Heat of vaporization
37.0 kJ/mol
Heat of combustion
-3838 kJ/mol

Hazards and Protection.
Storage
The effectiveness of phenolic inhibitors is dependent on the presence of oxygen and the monomers must be stored under air rather than an inert atmosphere. Temperature must be kept low to minimize formation of peroxides and other products. The acrylic esters may be stored in mild or stainless steel, or aluminum. Acrylic acid and derivatives
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Suitable protective clothing and self-contained resp protective apparatus should be available for use of those who may have to rescue persons overcome by fumes. Protection required for safe handling of acrylic acid and esters commonly includes use of impervious gloves, shoe soles, and clothing; splash-proof goggles.
Respirators
Self-contained breathing apparatus, rubber gloves, chemical goggles.
Small spills/leaks
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to knock-down vapors.
Stability
Polymerizes easily.
Incompatibilities
Strong oxidizing acids may cause a vigorous reaction that is sufficiently exothermic to ignite the reaction products Reacts with strong oxidants.
Decomposition
When heated to decomposition it emits acrid smoke and toxic fumes.

Fire.
Flash Point,°C
31
Autoignition, °C
340
Upper exp. limit, %
8
Lower exp. limit, %
2
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may spread fire. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. 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
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
2
 

Health.
Poison_Class
4
Exposure effects
   Ingestion
Prolonged inhalation may cause nausea. Irritation of the gi tract may occur.
   Inhalation
Vapors may cause dizziness or suffocation. May cause toxic effects. May irritate or burn.
   Skin
Dermal irritation and sensitization may occur.
   Eyes
Highly irritating to mucous membranes and eyes. Strong lacrimator. May cause corneal burns.

First aid
 
   Ingestion
DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician.
   Inhalation
IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used.
   Skin
IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.
   Eyes
First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

Transport.
UN number
2527
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
BAI
 
Std. Transport #
4907263
 
IMO Pollution Category
B
IMO Hazard code
S/P