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LC5157 Potassium sulfide
small lumps for analysis EMSURE


Order number Packaging Quantity Price €
AC32157 Plastic bottle 250 g 27.225
AC32157 Plastic bottle 1 kg 74.70


Product information
Synonyms Potassium monosulfide
Hill Formula (l*K2S)(m*K2Sx)(n*K2S2O3)
Chemical formula (l*K2S)(m*K2Sx)(n*K2S2O3)
HS Code 2830 90 85
CAS number 39365-88-3


Chemical and physical data
Solubility 500 g/l (20 °C)
Melting point 200 – 250 °C
Density 1.65 g/cm3 (20 °C)
Bulk density 1000 – 1200 kg/m3
pH value 13 (10 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H314: Causes severe skin burns and eye damage.
H400: Very toxic to aquatic life.
EUH031: Contact with acids liberates toxic gas.
Precautionary Statement(s) P280: Wear protective gloves/ protective clothing/ eye protection/ face protection.
P273: Avoid release to the environment.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
Storage class 8 A Combustible substances, corrosive
WGK WGK 2 water endangering
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.


Safety information
R Phrase R 31-34-50
Contact with acids liberates toxic gas.Causes burns.Very toxic to aquatic organisms.
S Phrase S 26-36/37/39-45-61
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger corrosive, dangerous for the environment
Hazard Symbol Corrosive
Dangerous for the environment


Transport information
Declaration (transport by sea) IMDG-Code UN 3262 CORROSIVE SOLID, BASIC, INORGANIC, N.O.S.(POTASSIUM(POLY)SULFIDE), 8, II, Segregation Group: 18 (Alkalis)


Assay (complexometric, as K2S) ≥ 44 %
Sulfite (SO3) ≤ 1 %
Thiosulfate (S2O3) about 20 %
Total nitrogen (N) ≤ 0.01 %