What is EC50 sludge toxicity?

Toxicity to algae: EC50 – Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum) – 14 mg/L – 72 h. Toxicity to microorganisms: EC50 – activated sludge of a predominantly domestic sewage – > 100 mg/L – 3 h. Remarks:Respiration rate. no data available no data available no data available no data available

Is aluminium chloride a hazard?

Aluminium chloride, basic is reported to produce slight, reversible skin irritation in some rat studies; however, the effects were not sufficient to warrant a hazard classification [OECD TG 404; NICNAS]. – Inhalation: May cause irritation of the nose and throat (mucous membranes).

Can PAC be stored at a high temperature?

PAC may become unstable when stored for long time at temperatures higher than 40°C.PAC tends to hydrolyze to a white turbid solution and loses effectiveness when it is kept long as a diluted solution of less than approximately 3%( as Al2O3). The storage area should have a non-combustible and corrosion resistant floor.