Items with dissolved oxygen level at 1 ppm or less have been added!

Anhydrous and Air-Sensitive Solvent

Some organic synthesis or preparations require low contents of water and/or oxygen. Anhydrous solvents and air-sensitive reagents from FUJIFILM Wako reagents contain less than 10 ppm of water and 1 ppm of dissolved oxygen, and are packaged in a bottle with a special cap which can be using a syringe inserted through the hole in the cap (Figure). The bottle is purged and backfilled with nitrogen gas.


  • Dissolving oxygen : 1ppm max.
  • Water : 0.001%(10ppm) max.

Example of Specifications  Toluene, Deoxidized



Assay 99.5% min.
Density 0.864-0.868g/mL
Dissolving oxygen 1ppm max.
Water 0.001% max.

Method for extracting solvent


A lid is attached to the special cap. Please use after removing the lid.
As seen in the figure, extract the solvent with a syringe while blowing N2 gas in.

Example of Reaction

Here are the comparisons of the chemical reaction between normal grade and anhydrous grade.




Yamada, al.: “ Development of manufacturing process for fasiglifam via asymmetric hydrogenation with trace ruthenium catalyst” 2014 Winter Symposium on Process Chemistry.

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Author: N. Tsurutani

For research use or further manufacturing use only. Not for use in diagnostic procedures.

Product content may differ from the actual image due to minor specification changes etc.

If the revision of product standards and packaging standards has been made, there is a case where the actual product specifications and images are different.

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