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What is Modified Picramic Acid Preparation Method about?

The document presents a modified method for the preparation of picramic acid, addressing the inefficiencies of existing methods. The proposed procedure involves heating picric acid in alcohol, adding ammonium hydroxide, and passing hydrogen sulfide gas, resulting in a higher yield of purified picramic acid. The final yield is reported to be 76.5% of the theoretical value, with additional yield possible from the residue of the process.

Author

sirocco

Language

EN