H411: Toxic to aquatic life with long lasting effects.
P273: Avoid release to the environment.
10 - 13 Other liquids and solids
WGK 1 slightly water endangering
17 Inorganic selenium compounds are toxic and must be handled with caution. Container E. Elemental selenium can be recovered by first oxidizing the salts in aqueous solution with concentrated Nitric acid (Cat.No. 100443). The addition of Sodium hydrogen sulfite solution (Item No. 806356) then causes elemental selenium to precipitate out. Aqueous phase: Container D.
Dangerous for the environment
Categories of danger
dangerous for the environment
R 33-51/53 Danger of cumulative effects.Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S 36-61 Wear suitable protective clothing.Avoid release to the environment. Refer to special instructions/ Safety data sheets.