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12665

Sigma-Aldrich

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
EC Number:
253-390-1
MDL number:
MFCD00148074
UNSPSC Code:
12352302
NACRES:
NA.22

Quality Level

100

form

solid

concentration

≥42% (K2S)

InChI

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

InChI key

ZOCLAPYLSUCOGI-UHFFFAOYSA-N

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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.

Signal Word

Danger

Hazard Statements

H252,H314,H335,H400

Hazard Classifications

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

Target Organs

Respiratory system

Supplementary Hazards

EUH031

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

12665-BULK:
12665-VAR:
12665-100G:
12665-6X1KG:
12665-50KG:
12665-1KG:
12665-20KG:

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Certificates of Analysis (COA)

Lot/Batch Number
STBK7635
STBK3100
STBK1154
STBK1155
STBJ4007

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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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