Potassium
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- $44.9 - $3400
- Product name: Potassium
- CAS: 7440-09-7
- MF: K
- MW: 39.1
- EINECS:231-119-8
- MDL Number:MFCD00133776
- Synonyms:potassium,metalalloys ;CONDUCTANCE STANDARD 300 000 UMHO;CONDUCTANCE STANDARD SOLUTION B;CONDUCTANCE STANDARD SOLUTION C;CONDUCTIVITY CALIBRATION STANDARD 10;CONDUCTIVITY CALIBRATION STANDARD 100;CONDUCTIVITY CALIBRATION STANDARD 1,000;CONDUCTIVITY CALIBRATION STANDARD 10,000
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Brand
- A2B
- Sigma-Aldrich
- Strem Chemicals
- Thermo Scientific Chemicals
- TRC
Package
- 1g
- 5g
- 10g
- 20g
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- 1EA
- 50g
- 100mL
- 100g
- 500ml
- 1kit
- 1amp
- 10 g
- 50 g
- 100 g
- 500 g
- ManufacturerA2B
- Product numberAB78465
- Product descriptionPotassium 99%
- Packaging1g
- Price$116
- Updated2021-12-16
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- ManufacturerA2B
- Product numberAB78465
- Product descriptionPotassium 99%
- Packaging5g
- Price$156
- Updated2021-12-16
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- ManufacturerA2B
- Product numberAB78465
- Product descriptionPotassium 99%
- Packaging25g
- Price$428
- Updated2021-12-16
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- ManufacturerSigma-Aldrich
- Product numberGF07377149
- Product descriptionPotassium lump, 25?mm max. lump size, weight 5?g, purity 99.97%
- Packaging1EA
- Price$3400
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number244864
- Product descriptionPotassium chunks (in mineral oil), 98% trace metals basis
- Packaging50g
- Price$186
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number64181
- Product descriptionConductivity Standard conductivity 150000 μS/cm at 25 °C
- Packaging500ml
- Price$205
- Updated2022-05-15
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- ManufacturerSigma-Aldrich
- Product number1.09924
- Product descriptionPotassium standard 1000 mg K, (KCl in H?O) Titrisol?
- Packaging1amp
- Price$95.4
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number679909
- Product descriptionPotassium cubes (in mineral oil), L × W × H 40 mm × 30 mm × 20 mm, 99.5% trace metals basis
- Packaging20g
- Price$105
- Updated2023-01-07
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- ManufacturerSigma-Aldrich
- Product number51715
- Product descriptionConductivity Standard conductivity 20000 μS/cm at 25 °C
- Packaging500ml
- Price$273
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number56890
- Product descriptionConductivity Standard conductivity 300?μS/cm at 25?°C
- Packaging500ML
- Price$285
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number44348
- Product descriptionConductivity Standard conductivity 3000 μS/cm at 25 °C
- Packaging500ml
- Price$285
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number06811
- Product descriptionConductivity Standard conductivity 200?μS/cm at 25?°C
- Packaging500ML
- Price$285
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number59962
- Product descriptionConductivity Standard conductivity 5000 μS/cm at 25 °C
- Packaging500ml
- Price$285
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number51795
- Product descriptionConductivity Standard conductivity 2000 μS/cm at 25 °C
- Packaging500ml
- Price$285
- Updated2026-04-30
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- ManufacturerSigma-Aldrich
- Product number41303
- Product descriptionConductivity Standard conductivity 400 μS/cm at 25 °C
- Packaging500ml
- Price$285
- Updated2026-04-30
- Buy
- ManufacturerSigma-Aldrich
- Product number06999
- Product descriptionConductivity Standard conductivity 500 μS/cm at 25 °C, ≤2.5% KCl (T)
- Packaging500ml
- Price$285
- Updated2026-04-30
- Buy
| Manufacturer | Product number | Product description | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|
| A2B | AB78465 | Potassium 99% | 1g | $116 | 2021-12-16 | Buy |
| A2B | AB78465 | Potassium 99% | 5g | $156 | 2021-12-16 | Buy |
| A2B | AB78465 | Potassium 99% | 25g | $428 | 2021-12-16 | Buy |
| Sigma-Aldrich | GF07377149 | Potassium lump, 25?mm max. lump size, weight 5?g, purity 99.97% | 1EA | $3400 | 2026-04-30 | Buy |
| Sigma-Aldrich | 244864 | Potassium chunks (in mineral oil), 98% trace metals basis | 50g | $186 | 2026-04-30 | Buy |
| Sigma-Aldrich | 64181 | Conductivity Standard conductivity 150000 μS/cm at 25 °C | 500ml | $205 | 2022-05-15 | Buy |
| Sigma-Aldrich | 1.09924 | Potassium standard 1000 mg K, (KCl in H?O) Titrisol? | 1amp | $95.4 | 2026-04-30 | Buy |
| Sigma-Aldrich | 679909 | Potassium cubes (in mineral oil), L × W × H 40 mm × 30 mm × 20 mm, 99.5% trace metals basis | 20g | $105 | 2023-01-07 | Buy |
| Sigma-Aldrich | 51715 | Conductivity Standard conductivity 20000 μS/cm at 25 °C | 500ml | $273 | 2026-04-30 | Buy |
| Sigma-Aldrich | 56890 | Conductivity Standard conductivity 300?μS/cm at 25?°C | 500ML | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 44348 | Conductivity Standard conductivity 3000 μS/cm at 25 °C | 500ml | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 06811 | Conductivity Standard conductivity 200?μS/cm at 25?°C | 500ML | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 59962 | Conductivity Standard conductivity 5000 μS/cm at 25 °C | 500ml | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 51795 | Conductivity Standard conductivity 2000 μS/cm at 25 °C | 500ml | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 41303 | Conductivity Standard conductivity 400 μS/cm at 25 °C | 500ml | $285 | 2026-04-30 | Buy |
| Sigma-Aldrich | 06999 | Conductivity Standard conductivity 500 μS/cm at 25 °C, ≤2.5% KCl (T) | 500ml | $285 | 2026-04-30 | Buy |
Properties
Melting point :64 °C (lit.)
Boiling point :760 °C (lit.)
Density :0.86 g/mL at 25 °C (lit.)
vapor pressure :0.09 mm Hg ( 260 °C)
refractive index :n20/D 1.334
storage temp. :2-8°C
solubility :H2O: soluble
form :rod
color :Silver/gray
Specific Gravity :0.86
PH :5.0 (H2O, 20°C)
Odor :Odorless
Flame Color :Lilac or pale violet
Resistivity :6.1 μΩ-cm, 20°C
Water Solubility :reacts
Electrical Conductivity :1.4× 107S/m
Thermal Conductivity :100 W/(m·K)
Specific Heat Capacity :Cp(crystal): 0.76 J/(g·K); Cp(gas): 0.53 J/(g·K), at 25℃
Sensitive :Air & Moisture Sensitive
Dielectric constant :5(0.0℃)
Stability :Stable. Moisture and air-sensitive. Spontaneously combustible through the generation and ignition of hydrogen. Reacts violently with water and acids, alcohols, carbon monoxide. Store under oil.
InChI :1S/K
InChIKey :ZLMJMSJWJFRBEC-UHFFFAOYSA-N
SMILES :[K]
CAS DataBase Reference :7440-09-7(CAS DataBase Reference)
NIST Chemistry Reference :Potassium(7440-09-7)
EPA Substance Registry System :Potassium (7440-09-7)
Boiling point :760 °C (lit.)
Density :0.86 g/mL at 25 °C (lit.)
vapor pressure :0.09 mm Hg ( 260 °C)
refractive index :n
storage temp. :2-8°C
solubility :H2O: soluble
form :rod
color :Silver/gray
Specific Gravity :0.86
PH :5.0 (H2O, 20°C)
Odor :Odorless
Flame Color :Lilac or pale violet
Resistivity :6.1 μΩ-cm, 20°C
Water Solubility :reacts
Electrical Conductivity :1.4× 107S/m
Thermal Conductivity :100 W/(m·K)
Specific Heat Capacity :Cp(crystal): 0.76 J/(g·K); Cp(gas): 0.53 J/(g·K), at 25℃
Sensitive :Air & Moisture Sensitive
Dielectric constant :5(0.0℃)
Stability :Stable. Moisture and air-sensitive. Spontaneously combustible through the generation and ignition of hydrogen. Reacts violently with water and acids, alcohols, carbon monoxide. Store under oil.
InChI :1S/K
InChIKey :ZLMJMSJWJFRBEC-UHFFFAOYSA-N
SMILES :[K]
CAS DataBase Reference :7440-09-7(CAS DataBase Reference)
NIST Chemistry Reference :Potassium(7440-09-7)
EPA Substance Registry System :Potassium (7440-09-7)
Safety Information
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Description
Potassium forms a blue solution in tetrahydrofoliate which is used for the ? -monoalkylation of -lactones in the presence of 18-crown-6. It is used for generation of potassium ethoxide in solution, for use in the Birch reduction of an aromatic ring, for preparation of potassium amide,Related product price
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