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Merck
CN

12665

Potassium (poly)sulfide

≥42% K2S basis

Synonym(s):

Potassium polysulfide

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About This Item

Linear Formula:
K2S/n
CAS Number:
37199-66-9
UNSPSC Code:
12352302
NACRES:
NA.22
EC Number:
253-390-1
MDL number:
MFCD00148074
Form:
solid

Key Documents

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Product Name

Potassium (poly)sulfide, ≥42% K2S basis

SMILES string

[K+].S

InChI key

ZOCLAPYLSUCOGI-UHFFFAOYSA-N

InChI

1S/K.H2S/h;1H2/q+1;

form

solid

concentration

≥42% (K2S)

Quality Level

100

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Application

Potassium polysulfide shows high aqueous solubility and can act as high energy density half-cells for secondary electrochemical storage systems. It can be used as a sulfur source for synthesizing sulfur nanoparticles.

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Danger

Hazard Classifications

Aquatic Acute 1 - Eye Dam. 1 - Self-heat. 2 - Skin Corr. 1B - STOT SE 3

target_organs

Respiratory system

supp_hazards

EUH031

Storage Class

4.2 - Pyrophoric and self-heating hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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Certificates of Analysis (COA)

Lot/Batch Number
SDBB2936
STBL3364
STBL0756
STBK7635
STBK3100

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An energetic medium for electrochemical storage utilizing the high aqueous solubility of potassium polysulfide.
Licht S.
Journal of the Electrochemical Society, 134(9), 2137-2141 (1987)
Production of sulfur nanoparticles from aqueous solution of potassium polysulfide.
Massalimov I A, et al.
Russian Journal of Applied Chemistry, 85(12), 1832-1837 (2012)

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