potassium

• ChemBase ID: 138663
• Molecular Formular: K
• Molecular Mass: 39.0983
• Monoisotopic Mass: 38.96370668
• SMILES: [K]
• Canonical SMILES: [K]
• InChI: InChI=1S/K
• InChIKey: ZLMJMSJWJFRBEC-UHFFFAOYSA-N

NAMES AND DATABASE IDS

Names

• IUPAC name: potassium; potassium hydride
• IUPAC Traditional name: potassium; potassium hydride
• Synonyms: Potassium; Potassium, AAS standard solution, Specpure®, K 1000 g/ml; Potassium, Ion chromatography standard solution, Specpure®, K; Potassium, plasma standard solution, Specpure®, K 10,000 g/ml; Potassium, Oil based standard solution, Specpure®, K 1000 g/g; Potassium, plasma standard solution, Specpure®, K 1000 g/ml; Potassium hydride; Potassium, solid; Potassium, Oil based standard solution, Specpure®, K 5000 g/g; 钾; 钾, AAS标准溶液, Specpure®, K 1000 μg/ml; 1000 g/ml; 钾,等离子标准溶液, Specpure®, K 10,000®g/ml; 钾,油基标准溶液, Specpure®, K 1000®g/g; 钾,等离子标准溶液, Specpure®, K 1000®g/ml; 氢化钾; 钾, 固体; 钾, 油基标准溶液, Specpure®, K 5000μg/g

Database IDs

• CAS Number: 7440-09-7; 7693-26-7
• EC Number: 231-704-8; 231-714-2; 231-119-8
• MDL Number: MFCD00165511; MFCD00011357; MFCD00133776
• PubChem SID: 24854713; 162232914; 24854712; 24852917; 24881836; 24885519
• PubChem CID: 5462222

CALCULATED PROPERTIES

• LogD (pH = 5.5): -0.126
• LogD (pH = 7.4): -0.126
• H Acceptors: 0
• H Donor: 0
• Log P: -0.126
• Molar Refractivity: 0.8 cm^3
• Polarizability: 2.9856355 Å^3
• Polar Surface Area: 0.0 Å^2
• Rotatable Bonds: 0
• Lipinski's Rule of Five: true

PROPERTIES

Physical Property

• Apperance: chunks (in mineral oil); cubes (in mineral oil); dispersion (in mineral oil (~35%)); ingot; Liquid; pieces; pieces (stored under mineral oil, heavy); rod; Sealed in standard ampoules under vacuum
• Melting Point: 64 °C(lit.)
• Boiling Point: 760 °C(lit.)
• Flash Point: >113 °C; >235.4 °F
• Density: 0.86 g/mL at 25 °C(lit.)
• Vapor Pressure: 0.09 mmHg ( 260 °C)
• Resistivity: 6.1 μΩ-cm, 20°C; 6.1 μΩ-cm20°C

Safety Information

• RTECS: TS6460000
• European Hazard Symbols: Corrosive (C); Flammable (F)
• UN Number: 1409; 2257; UN2257; UN3264
• German water hazard class: 1; 3
• Hazard Class: 4.3; 8
• Packing Group: 1; I; III
• Risk Statements: 11-14/15-34; 14/15-34; 34
• Safety Statements: 16-26-27-36/37/39-45; 23-26-36/37/39-45; 26-36/37/39-43-45; 26-36/37/39-45-60; 5-8-45
• TSCA Listed: 否; 是
• GHS Pictograms: GHS02; GHS05
• GHS Signal Word: Danger
• GHS Hazard statements: H260-H314; H260-H314-H318; H314; H314-H318
• GHS Precautionary statements: P223-P231 + P232-P280-P305 + P351 + P338-P370 + P378-P422; P231+P232-P260-P303+P361+P353-P305+P351+P338-P405-P501A; P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A
• Personal Protective Equipment: Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges; Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
• RID/ADR: UN 1409 4.3/PG 1; UN 2257 4.3/PG 1
• Supplemental Hazard Statements: Reacts violently with water.

Product Information

• Purity: 98%; 99.5%; 99.95% (metals basis); 99.95% trace metals basis
• Concentration: ≥98% in paraffin; ≥98.0% in paraffin; 30 wt % dispersion in mineral oil; 50 wt. % in paraffin
• Grade: purum; SAJ first grade
• Diameter: 25 mm
• L × W × H: 40 mm × 30 mm × 20 mm
• Linear Formula: KH
• Empirical Formula (Hill Notation): K

DETAILS

Sigma Aldrich - 679909

Packaging
20 g in glass bottle
Quantity
1 cube = ~20g
Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 451096

Packaging
250 g in poly bottle
Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 215813

Packaging
75, 300 g in poly bottle

Sigma Aldrich - 244856

Packaging
1, 5, 25 g in ampule
Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 708860

Packaging
5, 25 g in poly bottle
Physical properties
Melting point of paraffin used to prepare mixture is ~55-65 °C

Sigma Aldrich - 60328

Other Notes
Review of its use in organic chemistry1

Sigma Aldrich - 12621

Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 244864

Packaging
50 g in poly bottle
Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 60030

Caution
May form highly shock and friction sensitive peroxides in contact with light and air.
Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†

Sigma Aldrich - 24-3890

Application
Combines under pressure with silver metal to form 2 new compounds: K2Ag and K3Ag.†