Product Data Sheet

 Eastman IBIB (Isobutyl Isobutyrate)

CAS No. 97-85-8
Application/Uses
  • Automotive OEM
  • Coatings - OEM and Special Purpose
  • EXXATE 600 replacement blends
  • Thinner blends and purge solvents
  • Truck/Bus/Commercial Vehicles
  • Xylene replacement blends
Key Attributes
  • High blush resistance
  • High electrical resistance
  • Low density
  • Low MIR value
  • Low surface tension
  • Low water solubility
  • Low-cost retarder solvent: Lower formulation cost
  • Moderate solvent activity
  • Non-HAP
  • Slow evaporation rate
  • Urethane grade: Suitable for use with moisture-sensitive polymers
Product Description
Eastman IBIB (Isobutyl Isobutyrate) is an economical retarder solvent that is used in nitrocellulose lacquers, coatings for plastic substrates, and high-solids coatings. It is a slow-evaporating solvent with good flow and leveling characteristics, and good blush resistance. It is an economical, high-purity, active solvent for nitrocellulose. The low surface tension of IBIB is valuable in applications where wetting of the substrate is difficult. With low water miscibility, IBIB is an excellent retarder solvent for moisture-sensitive coatings such as 2-K polyurethanes. IBIB has high electrical resistance, which is helpful in adjusting the resistivity of a coating applied using electrostatic spray equipment. IBIB can be used in blends to replace xylene and Exxate 600.

Eastman IBIB is an Eastman Performance Solvent.

Typical Properties
 
 
Property   Typical Value, Units
Molecular Weight   142.22
Empirical Formula  
Color Pt-Co   15 max.
Specific Gravity @ 20¡ÆC/20¡ÆC   0.855
Wt/Vol @ 20¡ÆC   0.86 kg/L (7.13 lb/gal)
Solubility
  in Water, @ 20¡ÆC
  <0.1 wt %
  Water in, @ 20¡ÆC
  <0.2 wt %
Evaporation Rate
  (n-butyl acetate = 1)
  0.43
  (ether = 1)
  30.2
Dilution Ratio
  Toluene
  1.5
  VMP Naphtha
  0.8
Refractive Index @ 20¡ÆC   1.4
Vapor Density (air = 1)   5
Vapor Pressure
  @ 20¡ÆC
  3.2 mm Hg
  @ 55¡ÆC
  3.3 KPa
Boiling Point @ 760 mm Hg
  Initial
  144¡ÆC (291¡ÆF)
  Dry Point
  151¡ÆC (304¡ÆF)
Freezing Point   -80¡ÆC (-112¡ÆF)
Flash Point Tag Closed Cup   40¡ÆC (104¡ÆF)
Fire Point   46¡ÆC (115¡ÆF)
Flammability Limits in Air, % by Volume
  Lower @ 93¡ÆC
  1 Vol %
  Upper @ 93¡ÆC
  7.6 Vol %
Autoignition Temperature   432¡ÆC (810¡ÆF)
Azeotropes
  BP
  95.5¡ÆC (203.9¡ÆF)
  Wt % Water
  39.4 wt %
Hansen Solubility Parameters
  Nonpolar
  7.4
  Polar
  1.4
  Hydrogen Bonding
  2.9
  Total
  8.1
Surface Tension @ 20¡ÆC   23.2 dynes/cm
Blush Resistance @ 80¡ÆF (26.7¡ÆC)   92% RH
Electrical Resistance   >20 Megohms
NFPA Classification 30   IC
Expansion Coefficient, per ¡ÆC @ 20¡ÆC   0.0011
Critical Temperature   328.8¡ÆC
Critical Pressure   25.7 ATM
Critical Volume   494 ml/g¡¤mol
Heat of Vaporization   9021 cal/g¡¤mol
Heat of Combustion   -1073 kcal/g¡¤mol
Liquid Heat Capacity @ 25¡ÆC   62.55 cal/(g*mol)(¡ÆC)
Liquid Viscosity @ 25¡ÆC   0.9 cP (mPa¡¤s)
Nitrocellulose Solubility   Active
Maximum Incremental Reactivity (MIR)   0.64
Acidity as Acetic Acid   0.01 wt % max.
Assay   98.0 wt % min.

Comments
Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.
Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

13-Oct-2003 2:40:05 PM