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Technical Data Sheet
Eastman™ Isobutyric Acid

  • Agriculture intermediates
  • Dyes / pigments / paints
  • Food flavors & food fragrances
  • Fragrance ingredients
  • Herbicides - intermediate for other
  • Intermediates
  • Other-food chemicals
  • Pharmaceutical chemicals
  • Protective coatings

Product Description
Eastman™ Isobutyric Acid ((CH3)2CHCOOH) is a colorless, medium boiling liquid. Esters of isobutyric acid are used as solvents for various applications where desirable odors and flavor characteristics are important. The potassium salt of isobutyric acid is effective as a solubility promoter in the caustic extraction of mercaptans from sour petroleum stocks.

Typical Properties

PropertyTypical Value, Units
Molecular Weight88.1
Empirical FormulaC4H8O2
Specific Gravity 
     @ 20°C/20°C0.95
Assay99.5 wt %
Boiling Point155 °C (311 °F)
Freezing Point-47 °C (-53 °F)
Vapor Pressure 
     @ 20°C1.5 mm Hg
Heat of Combustion517 k·cal/g
Refractive Index1.39 n(20°C/D)
     in Water, @ 25°C21 wt %
     Water In, @ 25°C42 wt %
Fire Point67 °C (153 °F)
Flash Point 
     Tag Closed Cup59 °C (139 °F)
     Tag Open Cup77 °C (170 °F)
Autoignition Temperature482 °C (900 °F)
     @ 25°C1.3 cP

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.

2/28/2018 11:35:39 AM