Potassium sulfate 99% or Dipotassium sulfate or Sulfate of potash (SOP) or Sulfuric acid dipotassium salt

Product Overview & Quality

Product Name: Potassium sulfate 99% or Dipotassium sulfate or Sulfate of potash (SOP) or Sulfuric acid dipotassium salt
Brand: QReC (Product Code: QR-P5249-1-0500)
Grade: Analytical Reagent (AR Grade) featuring a certified chemical assay of not less than 99.0 percent. Manufactured and multi-recrystallized under strict QReC global laboratory specifications. Rigorously tested to enforce exceptionally low ppm thresholds of water-insoluble matter, chloride, total nitrogen, phosphate, calcium, magnesium, sodium, and trace heavy metals (such as iron, lead, copper, arsenic, and zinc). Conforms to certified DNase and RNase-free specifications, ensuring biological purity. Dry, uniform crystals dissolve cleanly in water, producing crystal-clear, neutral, and precipitate-free solutions. Packaged in a heavy-duty, moisture-barrier polymer container equipped with a hermetic seal.
Physical Properties: Colorless hard crystals, crystalline granules, or fine white crystalline powder. Odorless with a slight saline-bitter taste. Thermodynamically stable in ambient air with minimal hygroscopicity. High thermal stability (melting point exceeding 1,060 degrees Celsius). Non-combustible and non-corrosive solid. Aqueous solutions are practically neutral (pH approximately 5.5 to 7.5 at room temperature).
Solubility: Moderately soluble in water at room temperature (approximately 11 to 12 grams per 100 milliliters at 20 degrees Celsius; solubility escalates significantly with temperature, exceeding 24 grams per 100 milliliters in boiling water); slightly soluble in glycerol; practically insoluble in ethanol and acetone.
Key Use: Universally utilized as a boiling point elevator and digestion salt paired with copper sulfate catalyst in the sulfuric acid digestion step of the Kjeldahl method for total nitrogen and crude protein quantification, elevating the digestion temperature to accelerate organic breakdown. Extensively applied as a high-purity, chloride-free inorganic source of bioavailable potassium and sulfur in plant tissue culture media formulations and agronomic research. Serves as an analytical reference standard and reagent for sulfate and potassium calibrations in environmental and industrial testing. Functions as an ionic strength adjuster in potentiometric analyses using ion-selective electrodes (ISE). Employed as an inorganic salting-out agent for protein fractionation and precipitation in biochemistry workflows.

Safety & Hazards

Classification: Non-hazardous substance under standard GHS criteria in typical laboratory usage. Exceptionally low acute toxicity profile; particulate dust may exert mild mechanical irritation to ocular, dermal, and respiratory surfaces.
Health Risks: Direct eye contact may cause transient mechanical stinging, conjunctival redness, or lacrimation. Prolonged dermal contact may produce mild dryness or superficial irritation. Inhalation of particulate dust can cause minor sneezing, coughing, or upper respiratory discomfort. Ingestion of excessive quantities may provoke transient gastrointestinal upset, abdominal cramps, nausea, vomiting, or osmotic laxative effects characteristic of concentrated sulfate and potassium salts.
First Aid Measures: Flush affected eyes thoroughly with clean running water for at least 10 to 15 minutes. Wash exposed skin with soap and water. In case of dust inhalation, relocate the individual to fresh air. If accidentally swallowed in substantial amounts, rinse mouth thoroughly, drink water, and seek medical advice if discomfort persists.

Handling & Storage

Storage: Stable Inorganic Salt. Must be preserved in its original, tightly closed QReC container. Store in a clean, strictly dry, cool, and well-ventilated dedicated chemical store at stable room temperature (below 25 to 30 degrees Celsius), sheltered from atmospheric moisture and direct solar radiation. Keep strictly segregated from strong oxidizing agents, concentrated mineral acids, and reactive metals.
Precautions: Standard laboratory PPE is mandatory, including protective gloves, safety glasses, and a protective lab coat. Re-seal container cap tightly immediately after sampling. Minimize dust generation during weighing and dispensing.