1.05134

Supelco

Potassium sulfide

small lumps for analysis EMSURE®

Synonym(s):
Potassium sulfide, Potassium monosulfide
Linear Formula:
(l · K2S)(m · K2Sx)(n · K2S2O3)
CAS Number:
MDL number:

storage conditions

no restrictions.

Quality Level

assay

≥44% K2S basis (complexometric)

form

solid

pH

13 (20 °C, 10 g/L in H2O)

mp

200-250 °C

solubility

500 g/L

density

1.65 g/cm3 at 20 °C

bulk density

1000‑1200 kg/m3

anion traces

sulfite (SO32-): ≤1%
thiosulfate (S2O32-): ≤20

cation traces

N: ≤ 0.01%

storage temp.

no temp limit

Related Categories

Analysis Note

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

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