Warning do not use soda crystals in contact with aluminium. Avoid varnished and lacquered surfaces. Not to be used in drinking water. User with sensitive skin should avoid prolonged contact with highly concentrated solutions of soda crystals. Causes serious eye irritation keep out of reach of children wash hands thoroughly after handling. Wear protective gloves/protective clothing/eye protection/face protection. If in eyes: rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: get medical advice/attention. Contains sodium carbonate decahydrate. Biodegradable. No petrochemicals. Suitable for use is septic tanks. Ec no. 207-838-8