Potassium chloride
Potassium chloride (CAS 7447-40-7, Formula KCl, Molar Mass 74.55 g/mol) is an inorganic salt, supplied by Tech Serve Solutions as anhydrous beads. This highly soluble compound is essential for various laboratory applications, including the preparation of phosphate-buffered saline solutions and the extraction and solubilisation of proteins. Its purity and form make it suitable for analytical procedures and chemical synthesis.

Buffer Preparation
Potassium chloride is a key component in the preparation of phosphate-buffered saline (PBS), a widely used buffer solution in biological and chemical research for maintaining pH and osmolarity.
Protein Extraction
This compound aids in the extraction and solubilisation of proteins from biological samples, facilitating downstream purification and analysis processes.
Chemical Synthesis
As an essential inorganic salt, potassium chloride serves as a reagent or electrolyte in various chemical synthesis pathways and electrochemical applications.
Analytical Reagent
Its suitability for atomic absorption spectrometry and low UV absorption make it valuable for specific analytical methods requiring high-purity inorganic standards.
| Molecular weight | 74.55 |
|---|---|
| Linear formula | KCl |
| Assay | 99.0-100.5% |
| Grade | anhydrous |
| Form | beads |
| Density | 1.98 g/mL at 25 °C(lit.) |
| Solubility | H2O: soluble133 mg/mL |
| Melting point | 770 °C(lit.) |
| pH | 5.4-8.6 (25 °C, 5% in solution) |
| Concentration | 1 M |
| Storage temperature | 2-8°C |
| Impurities tested | ≤0.005% Insoluble matter |
| Application | May be used for the preparation of phosphate buffered saline, and for the extraction and solubilization of proteins. |
| Suitability | suitable for atomic absorption spectrometry |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 1 |
| Cation traces | Ba:, passes test (limit about 0.001%)Ca: ≤0.002%Fe: ≤3 ppmMg: ≤0.001%Na: ≤0.005%heavy metals (as Pb): ≤5 ppm |
| Anion traces | bromide (Br-): ≤0.01%chlorate, nitrate (as NO3-): ≤0.003%iodide (I-): ≤0.002%phosphate (PO43-): ≤5 ppmsulfate (SO42-): ≤0.001% |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Uv Absorption | λ: 260 nm Amax: 0.02λ: 280 nm Amax: 0.01 |
|---|---|
| Sterility | sterile-filtered |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Potassium chloride used for?
+
Potassium chloride (KCl) is used in the preparation of phosphate-buffered saline, for protein extraction and solubilisation, and as a reagent in chemical synthesis and analytical procedures.
What are the CAS number and formula for Potassium chloride?
+
The CAS number for Potassium chloride is 7447-40-7, and its chemical formula is KCl.
What grade and purity does Tech Serve Solutions supply for Potassium chloride?
+
Tech Serve Solutions supplies Potassium chloride in an anhydrous grade, with an assay of 99.0-100.5%. We do not represent this product as USP, BP, or EP grade unless explicitly stated in the product specifications.
How should Potassium chloride be handled safely?
+
Handle Potassium chloride with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator filter (e.g., type N95 or P1). Avoid dust formation and ensure adequate ventilation. Consult the Safety Data Sheet for detailed handling instructions.
Is Potassium chloride a controlled substance?
+
No, Potassium chloride (CAS 7447-40-7) is not listed as a controlled or scheduled substance.
How is Potassium chloride packed and exported by TSS?
+
Potassium chloride is supplied in various forms, including beads, and is available for export globally. Specific packaging details will be provided upon request.
How can I request a sample or quote for Potassium chloride?
+
To request a sample or a quote for Potassium chloride, please contact our sales team through the website or by phone, providing the product name and desired quantity.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis