Cesium sulfate
Cesium sulfate (CAS: 10294-54-9, Cs2O4S) is an inorganic salt with a molecular weight of 361.87 g/mol. It presents as a high-density solid, soluble in water. Commonly employed in biochemical research and chemical synthesis, its properties make it suitable for applications requiring specific ionic strength or density modifications. Tech Serve Solutions provides this compound for research and industrial applications.

Density Gradient Centrifugation
Cesium sulfate is utilised in density gradient centrifugation for separating biological macromolecules like DNA and RNA based on their buoyant density. Its high density and solubility are critical for achieving effective separation gradients.
Chemical Synthesis
As an inorganic salt, cesium sulfate can serve as a reagent or precursor in various chemical synthesis pathways. It may be used to introduce cesium ions or sulfate groups in specific reactions.
Biochemical Reagent
In biochemical laboratories, cesium sulfate finds use in specialised buffer solutions or as a component in assay development where precise ionic conditions are required. Its high purity supports sensitive experimental procedures.
| Molecular weight | 361.87 |
|---|---|
| Empirical formula | Cs2O4S |
| Assay | ≥99.5% (T) |
| Density | 4.243 g/mL at 25 °C(lit.) |
| Solubility | H2O: soluble0.2 g/mL, clear, colorless |
| Impurities tested | ≤0.001% total nitrogen (N) |
| Melting point | 1019 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 2 |
| Cation traces | Ca: ≤10 mg/kgCd: ≤5 mg/kgCo: ≤5 mg/kgCr: ≤5 mg/kgCu: ≤5 mg/kgFe: ≤5 mg/kgK: ≤50 mg/kgMg: ≤5 mg/kgMn: ≤5 mg/kgNa: ≤50 mg/kgNi: ≤5 mg/kgPb: ≤5 mg/kgZn: ≤5 mg/kg |
| Anion traces | chloride (Cl-): ≤20 mg/kg |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Product Line | BioXtra |
|---|---|
| Absorption | A50%/280, H2O ≤0.2 |
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 Cesium sulfate used for?
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Cesium sulfate is primarily used in density gradient centrifugation for separating biological macromolecules, and as a reagent in chemical synthesis and specialised biochemical applications.
What are the CAS number and formula for Cesium sulfate?
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The CAS number for Cesium sulfate is 10294-54-9, and its chemical formula is Cs2O4S.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cesium sulfate with an assay of ≥99.5% (T). We do not represent this product as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
What are the safety considerations when handling Cesium sulfate?
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Cesium sulfate is classified with WGK 2 in Germany. Handling requires appropriate personal protective equipment, including eyeshields, gloves, and a P1/N95 respirator filter, to avoid contact and inhalation.
How is Cesium sulfate packed and shipped?
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Cesium sulfate is carefully packed and exported by Tech Serve Solutions in compliance with international shipping regulations for chemical substances.
How can I request a quote or sample for Cesium sulfate?
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To request a quote or sample for Cesium sulfate, please contact our sales team via the website or by phone.
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