When sourcing Potassium Sulphate (Potassium Sulfate, K₂SO₄) from a scientific supplier like Ibex Sciences, a 250 Gram container represents a standard bulk laboratory or analytical pack size. [1]
Potassium sulphate is an inorganic salt that appears as an odorless, white crystalline powder or granular solid. Unlike previously mentioned heavy metal compounds like lead or barium, potassium sulphate is highly stable, has a low toxicity profile, and is primarily valued for its ionic properties and high potassium content. [1, 2, 3, 4, 5]
1. Key Chemical Properties and Specifications
2. Primary Laboratory and Industrial Applications
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- Nitrogen Determination (Kjeldahl Method): One of its most common analytical laboratory uses is as a boiling point elevator. It is added alongside a catalyst to raise the temperature of boiling sulfuric acid during the acid digestion step of protein and nitrogen analysis in foodstuffs. [1, 2]
- Agricultural and Soil Research: Since it provides both potassium and sulfur without introducing chloride (which can be toxic to salt-sensitive crops), it is extensively used in laboratory soil optimization studies and agricultural research. [1, 2]
- Protein and Capillary Electrophoresis: Utilized in biochemical research to improve protein separation during capillary zone electrophoresis by modifying buffer salt concentrations. [1]
- Chemical Synthesis: Serves as a standard precursor or reagent for manufacturing other potassium salts, potassium alum, and specialty glass. [1, 2]
3. Handling, Safety, and Storage
Potassium sulphate is a exceptionally safe substance compared to standard lab reagents, but basic laboratory protocols should always be maintained: [1, 2]
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- Low Hazard Profile: It is non-combustible and is not classified as a dangerous substance under standard GHS transport guidelines. [1, 2]
- Basic PPE: Handlers should wear standard laboratory attire, including safety glasses, a lab coat, and nitrile gloves, primarily to prevent mechanical skin irritation or eye contact from dust.
- Storage: The chemical is slightly hygroscopic over long periods. Keep the 2.5 kg container tightly closed in a cool, dry chemical storage area to prevent caking, clumping, or moisture absorption. [1]





















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