How should 5-Nitro-1H-indole-2,3-dione (CAS: 611-09-6) be stored?

5-Nitro-1H-indole-2,3-dione should be stored in a cool, dry place away from direct sunlight and sources of ignition. It should be kept in a tightly sealed container to prevent moisture and contamination. Optimal storage conditions include a temperature range of 15-25°C and relative humidity below 60%. It is advisable to store it in a fume hood or a well-ventilated area to minimize exposure to air and heat.