How should 5-Acetoxy-4-hydroxy-9,10-dioxo-9,10-dihydro-2-anthracenecarboxylic acid (CAS: 875535-35-6) be stored?

5-Acetoxy-4-hydroxy-9,10-dioxo-9,10-dihydro-2-anthracenecarboxylic acid (CAS: 875535-35-6) should be stored in a cool, dry place, away from heat and direct sunlight. It should be kept in a tightly sealed container to prevent moisture absorption. The storage temperature should be maintained below 30°C to ensure stability and prevent degradation. Proper labeling and documentation of the storage conditions are essential for safe handling.