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LC4991 Selenium disulfide
for synthesis


Order number Packaging Quantity Price €
AC31991 Glass bottle 25 g Inquire


Product information
Hill Formula S2Se
Chemical formula SeS2
HS Code 2813 90 90
EC number 231-303-8
Molar mass 143.09 g/mol
EC index number 034-002-00-8
CAS number 7488-56-4


Chemical and physical data
Solubility (20 °C) insoluble
Molar mass 143.09 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 soap and 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

RTECS VS8925000
Storage class Non 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.(SELENIUM DISULFIDE), 6.1, II
Declaration (transport by air) IATA-DGR UN 3283 SELENIUM COMPOUND, SOLID, N.O.S.(SELENIUM DISULFIDE), 6.1, II


Toxicological data
LD 50 oral LD50 rat 138 mg/kg


Assay ≥ 98 %
Melting range
– lower value
≥ 116 °C
– upper value ≤ 122 °C