Peroxides removed by treatment with aqueous sodium metabisulfite. The liquid irritates the eyes and is hazardous by skin absorption.
Powerful oxidants can cause explosion.
Wear face shield, goggles and gloves. Absorb bulk quantities on sand, shovel into containers and remove to a chemical disposal skip. Wash site of spillage with plenty of water and detergent. Peroxides removed by treatment with aqueous sodium metabisulfite. Avoid breathing vapour, eye and skin contact.