Reaktion #1270937

Reaktionsgleichung

naphthionic acid sodium salt

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Naphthionic Acid

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeSlowly add hydrochloric acid, and white precipitation
2. 2
   workup.STIRRINGStir the slurry for at least 4 hours
3. 3
   Filtrationfilter the slurry

Vorschrift

In a large beaker, add naphthionic acid sodium salt and water and stir to complete solution, pH=9.2-9.4. Slowly add hydrochloric acid, and white precipitation occurs at pH=2.2-2.4. Stir the slurry for at least 4 hours, then filter the slurry. Use the wetcake in Stage 2.

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