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LC1811 Diphenyl diselenide
for synthesis


Order number Packaging Quantity Price €
AC28811 Glass bottle 5 g 23.4


Product information
Synonyms Phenyl diselenide
Hill Formula C12H10Se2
Chemical formula C6H5SeSeC6H5
HS Code 2931 00 99
EC number 216-780-2
Molar mass 312.13 g/mol
EC index number 034-002-00-8
CAS number 1666-13-3


Chemical and physical data
Solubility (20 °C) insoluble
Melting point 58 – 61 °C
Molar mass 312.13 g/mol


Safety information
R Phrase R 23/25-33-50/53
Toxic by inhalation and if swallowed.Danger of cumulative effects.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 20/21-28-45-60-61
When using do not eat, drink or smoke.After contact with skin, wash immediately with plenty of water.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger toxic, dangerous for the environment
Hazard Symbol


Dangerous for the environment

Storage class Combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 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.


Transport information
Declaration (transport by sea) IMDG-Code UN 3283 SELENIUM COMPOUND, SOLID, N.O.S., 6.1, II
Declaration (transport by air) IATA-DGR UN 3283 SELENIUM COMPOUND, SOLID, N.O.S., 6.1, II


Assay (GC, area%) ≥ 97 %
Melting range
– lower value
≥ 58 °C
– upper value ≤ 61 °C
Identity (IR) passes test