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Technical Data Sheet
Eastman™ Toluhydroquinone

  • Auto plastics
  • Intermediates
  • Kitchen & bath
  • Molding & trim interior
  • Paints & coatings
  • Photographic chemicals
  • Protective coatings
  • Resins

Product Description
Eastman™ Toluhydroquinone (THQ) is a tan to white crystalline solid. THQ undergoes chemical reactions similar to those of hydroquinone. The presence of a methyl group in the ortho position in the toluhydroquinone molecule accounts for the slight structural and behavioral differences between toluhydroquinone and hydroquinone. Eastman™ Toluhydroquinone is a highly active inhibitor in the free radical polymerization of vinyl monomers and unsaturated polyesters.

Typical Properties

PropertyTypical Value, Units
Molecular Weight124.13
Empirical FormulaC7H8O2
AppearanceOff-white solid
Assay99 % min
Specific Gravity1.3
Melting Point127 °C (261 °F)
Boiling Point279 °C (534 °F)
Flash Point 
     Cleveland Open Cup172 °C (342 °F)
Autoignition Temperature452 °C (846 °F)
Solubility @ 25º (77ºF) 
     In Acetone55 wt %
     In Ethanol (95%)44 wt %
     In Ethyl Acetate50 wt %
     In Methyl Methacrylate14 wt %
     In Styrene< 5 wt %
     in Water7 wt %

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