PK2820 Potassium Powder (CAS 7440-09-7)

Catalog No. PK2820
Molecular Formula K
CAS Number 7440-09-7
Appearance Silvery powder
Purity 99.99%

Potassium Powder (CAS 7440-09-7) is a silvery-white metal powder. Its purity can reach 99.99%. Stanford Advanced Materials (SAM) offers high-quality Potassium Powder at a very competitive price.

Related products: Potassium Hexacyanoplatinate(IV) Powder, Potassium Hexafluoroaluminate Powder, Potassium Hexacyanoruthenate(II) Hydrate Powder, Potassium Iodate Powder


Potassium Powder Description

Potassium Powder (CAS 7440-09-7) is a silvery-white metal powder that is soft enough to be cut with a knife with little force. Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure. It was first isolated from potash, the ashes of plants, from which its name derives.

Stanford Advanced Materials (SAM) is a worldwide supplier of Potassium Powder and offers high-quality Potassium Powder at a very competitive price.


Potassium Powder Specifications

Product Name

Potassium Powder

CAS Number


Molecular formula


Molecular weight



0.862 g/

Melting point

63.5 °C (146.3 °F)

Boiling point

759 °C (1398 °F)


Potassium Powder Application

Potassium can be used in the synthesis of potassium-containing solid-state chalcogenides with promising thermoelectric properties. Most industrial applications of potassium exploit the high solubility in water of potassium compounds, such as potassium soaps. Heavy crop production rapidly depletes the soil of potassium, and this can be remedied with agricultural fertilizers containing potassium, accounting for 95% of global potassium chemical production.


Safety Information



Signal word


Hazard statements

H260 - H314

Precautionary statements

P223 - P231 + P232 - P280 - P305 + P351 + P338 - P370 + P378 - P422

Personal protective equipment

Eyeshields, Faceshields, Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges


UN 2257 4.3 / PGI

WGK Germany



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PK2732 Potassium Chromate (CAS 7789-00-6)

PK2732 Potassium Chromate (CAS 7789-00-6)

PK2829 Potassium Mercuric Iodide

PK2829 Potassium Mercuric Iodide

PK2835 Potassium Methoxide (CH3KO) Powder (CAS: 865-33-8)

PK2835 Potassium Methoxide (CH3KO) Powder (CAS: 865-33-8)

PK2877 Potassium Cyanoborodeuteride Powder (CAS 25895-63-0)

PK2877 Potassium Cyanoborodeuteride Powder (CAS 25895-63-0)


PK2975 Potassium Iodide (CAS: 7681-11-0)

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