Potassium

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Potassium Ampoule

MATERIAL OVERVIEW

Characteristics: Soft, silvery metal; rapidly oxidized in moist air. Soluble in liquid ammonia, aniline, mercury, and sodium.

Hazards: Dangerous fire risk; reacts with moisture to form potassium hydroxide and hydrogen. The reaction evolves much heat causing the potassium to melt and splatter. It also ignites the hydrogen. Burning potassium is difficult to extinguish; dry powdered soda ash or graphite or special mixtures of dry chemical is recommended. It can ignite spontaneously in moist air. Moderate explosion risk by chemical reaction. Potassium metal will form the peroxide and the superoxide at room temperature even when stored under mineral oil; may explode violently when handled or cut. Oxide-coated potassium should be destroyed by burning. Store in inert atmospheres, such as argon or nitrogen, or under liquids which are oxygen-free, such as toluene or kerosene, or in glass capsules which have been filled under vacuum or inert atmosphere.

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GENERAL PROPERTIES

Symbol:

K

Atomic Number:

19

Atomic Weight:

39.0983

Density:

0.862 gm/cc

Melting Point:

63.25 oC

Boiling Point:

760 oC

Thermal Conductivity:

1.025 W/cm/K @ 298.2 K

Electrical Resistivity:

6.15 microhm-cm @ 0 oC

Electronegativity:

0.8 Paulings

Specific Heat:

0.180 Cal/g/K @ 25 oC

Heat of Vaporization:

18.9 K-Cal/gm atom at 760 oC

Heat of Fusion:

0.574 Cal/gm mole

 

ALKALI METALS VIDEO CLIPS

 
 
 
 
alkali metal
 
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Alkali Metals

TYPICAL ANALYSES - Impurities in ppm

Material / Purity:

3N

3N7

Ag 10.0 <1.0
Al 50.0 <5.0
B 10.0 1.0
Ba 20.0 2.0
Be 10.0 <1.0
Ca 100.0 <5.0
Cr 50.0 <5.0
Co 50.0 <5.0
Cu 20.0 3.0
Fe 50.0 <5.0
Mg 30.0 4.0
Mn 10.0 1.0
Mo 50.0 <5.0
Na 250.0 30.0
Ni 10.0 <1.0
Pb 50.0 <5.0
Si 10.0 2.0
Ti 100.0 15.0
V 50.0 <5.0

Packaging

Potassium Standard Ampoule

Pre-Scored Ampoule

Potassium breakseal ampoule

Breakseal Ampoule

SPECIFICATIONS:

Pre-Scored:

Size

O.D.

Length

Glass Type

1 Gram

10.5 mm

50-52 mm

Pyrex

5 Gram

16.6 mm

70 mm

Pyrex

25 Gram

22.5 mm

15 mm

Pyrex

Breakseal:

1 Gram

10 mm

180 mm

Pyrex

5 Gram

13 mm

230 mm

Pyrex

POTASSIUM METAL

Material

Purity

Potassium Metal 1g Pre-Scored Ampoule camera1 3N5
Potassium Metal 1g Breakseal Ampoule 3N5
Potassium Metal 5 gm Pre-Scored Ampoule 3N5
Potassium Metal 5 gm Breakseal Ampoule 3N5
Potassium Metal 25 gm Pre-Scored Ampoule 3N5

Sodium Metal is packaged under argon to order and sold by the gram or kilogram and. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

POTASSIUM COMPOUNDS

Material

Purity

Potassium Carbonate K2CO3  -100 Mesh 5N
Potassium Chloride KCl  -40 Mesh 5N
Potassium Hexachloroosmate K2OsCl6 4N, 5N
Potassium Hexafluoroarsenate 3N
Potassium Iodide 3N
Potassium Molybdate K2MoO4  -200 Mesh 3N
Potassium Perrhenate KReO4  -40 Mesh 3N

Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

 

Material Safety Data Sheet - MSDS
Potassium MSDS
Technical Data Sheets
Potassium
Understanding Mesh Sizes