Description Sodium sulfite is a moist, light-brown solid powder. Applications Intermediate for chemicals and the paper industry Packaging Sodium sulfite is available in 25 kg HDPE bags. Other packaging may be considered on request. Storage and handling Store in a properly labeled and closed container. Keep in a cool, dry, and well-ventilated area. Keep away from incompatible materials such as oxidising agents, combustible materials, organic materials and acids. Protect containers from physical damage. Always refer to the Safety Data Sheet (SDS) for detailed information on storage and handling.