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Sulfates and sulfur salts

Potassium polysulfide

Also known as potassium, sulfane, Potassium sulfide (K2(Sx)), Potassium (Poly)Sulfide

CAS 37199-66-9Formula H2KS+Molar mass 73.18 g/molEC 253-390-1
GHS signal word: Danger. Pictograms: Corrosive, Hazardous to the environment
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Potassium polysulfide chemical structure, H2KS+, CAS 37199-66-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
37199-66-9
Formula
H2KS+
Molar mass
73.18 g/mol
EC number
253-390-1
HS code
283090
Category
Sulfates and sulfur salts

What is Potassium polysulfide?

Plain description, key identifiers and synonyms

Potassium polysulfide is a chemical mixture used for quickly oxidizing metal surfaces, often to give new work the appearance of being old.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
potassium sulfane
CAS number
37199-66-9 CAS number cross-checked
EC numbers
253-390-1, 677-755-3
Molecular formula
H2KS+
InChIKey
ZOCLAPYLSUCOGI-UHFFFAOYSA-N
InChI
InChI=1S/K.H2S/h;1H2/q+1;
SMILES (canonical and isomeric)
S.[K+]

Synonyms

  • potassium, sulfane
  • Potassium sulfide (K2(Sx))
  • Potassium (Poly)Sulfide
  • potassium, hydrogen sulfide
  • H2KS+

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
73.18 g/molcalc.
Exact mass
72.9509 Dacalc.
LogP (octanol/water)
-2.88calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
2calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
1calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H314Causes severe skin burns and eye damage.
  • H400Very toxic to aquatic life.
Precautionary statements (14)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Potassium polysulfide suppliers

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Potassium polysulfide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Functional uses

  • Depilatory

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 016-007-00-7

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Potassium polysulfide is traded under.

HS 2830.90Indicative HS code

Sulphides, polysulphides, whether or not chemically defined, other

World exports in 2024
$382M
+2.0% vs 2023, imports $246M
2019 to 2024
Top exporters
  1. Austria33.1%
  2. Philippines31.4%
  3. Germany9.1%
Top importers
  1. Germany12.7%
  2. South Korea11.7%
  3. China10.7%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Potassium polysulfide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Potassium polysulfide, based on the data on this page

What is Potassium polysulfide?

Potassium polysulfide is a chemical mixture used for quickly oxidizing metal surfaces, often to give new work the appearance of being old.

What is the CAS number of Potassium polysulfide?

The CAS registry number of Potassium polysulfide is 37199-66-9.

What is the molecular formula and weight of Potassium polysulfide?

The molecular formula of Potassium polysulfide is H2KS+ and its molar mass is 73.18 g/mol.

What is Potassium polysulfide used for?

Known uses and roles of Potassium polysulfide include depilatory.

Is Potassium polysulfide hazardous?

Potassium polysulfide carries the GHS signal word "Danger". Main hazards: causes severe skin burns and eye damage, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Potassium polysulfide?

Potassium polysulfide is usually classified under HS code 283090 (Sulphides, polysulphides, whether or not chemically defined, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Potassium polysulfide?

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What is the price of Potassium polysulfide?

Suppliers quote Potassium polysulfide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Potassium polysulfide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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