1. Sodium hydroxide is slightly corrosive to glassware, forming sodium silicate, which can cause the stopcock in glass instruments to stick. Therefore, glass stoppers should not be used when storing sodium hydroxide solution, as this may prevent the cap from being opened.
2. Prolonged storage of hot sodium hydroxide solution in glass containers can also damage the containers.
3. Sodium hydroxide should be stored in a cool, dry, and well-ventilated warehouse. Keep away from fire and heat sources. The warehouse temperature should not exceed 35°C, and the relative humidity should not exceed 80%. The packaging must be sealed to prevent moisture absorption. It should be stored separately from flammable materials and acids, and mixed storage is strictly prohibited. The storage area should be equipped with suitable materials to contain leaks. Solid sodium hydroxide should be packed in 0.5 mm thick steel drums and sealed tightly, with each drum weighing no more than 100 kg net; it should be packed in plastic bags or double-layered kraft paper bags in fully open or partially open steel drums; threaded glass bottles, iron-capped glass bottles, plastic bottles, or metal drums (cans) should be packed in ordinary wooden boxes; threaded glass bottles, plastic bottles, or tin-plated thin steel drums (cans) should be packed in full-bottomed lattice boxes, fiberboard boxes, or plywood boxes; tin-plated thin steel drums (cans), metal drums (cans), plastic bottles, or metal hoses should be packed in corrugated cardboard boxes. Packaging containers must be intact, sealed, and clearly marked with a "corrosive substance" sign.
