di-Ammonium hydrogen phosphate 99% or Diammonium phosphate (DAP) or Ammonium phosphate dibasic or Diammonium hydrogen orthophosphate

Product Overview & Quality

Product Name: di-Ammonium hydrogen phosphate 99% or Diammonium phosphate (DAP) or Ammonium phosphate dibasic or Diammonium hydrogen orthophosphate
Brand: QReC (Product Code: QR-D3008-1-0500)
Grade: Analytical Reagent High Purity Grade (AR Grade) featuring a certified chemical assay of not less than 99.0 percent. Manufactured and multi-crystallized under strict QReC global laboratory specifications without anti-caking conditioning agents. Strictly tested to enforce minimal water-insoluble matter (strictly below 0.005 percent), along with ultra-low ppm limits of chloride, sulfate, nitrate, silica, and trace heavy metals (such as iron, lead, copper, arsenic, zinc, calcium, magnesium, sodium, and potassium). Conforms to certified DNase and RNase-free specifications, ensuring biological purity in enzymatic and molecular biology assays. Exhibits uniform, dry crystals dissolving completely in water to yield crystal-clear, sediment-free, mildly alkaline solutions. Packaged in a heavy-duty, moisture-barrier polymer container equipped with an airtight hermetic seal.
Physical Properties: Colorless translucent crystals, crystalline granules, or fine white crystalline powder. Odorless to faint ammoniacal odor upon opening. Thermodynamically stable in sealed containers at room temperature, but slowly effloresces ammonia into ambient desiccated air or upon moderate heating, converting partially into monoammonium phosphate. Non-combustible inorganic solid; acts inherently as a flame retardant. Aqueous solutions are mildly basic (pH approximately 7.8 to 8.5 for a 5 percent aqueous solution at room temperature).
Solubility: Readily and highly soluble in water (approximately 69 to 70 grams per 100 milliliters at 20 degrees Celsius, increasing to over 100 grams per 100 milliliters in boiling water); slightly soluble in ethanol; practically insoluble in acetone and diethyl ether.
Key Use: Heavily utilized as the primary alkaline buffer component paired with monoammonium phosphate to prepare physiological Ammonium Phosphate Buffer systems for biochemical workflows and protein separations. Extensively applied as a mobile phase buffer modifier in High-Performance Liquid Chromatography (HPLC) and Liquid Chromatography-Mass Spectrometry (LC-MS) where volatile buffer characteristics are advantageous. Serves as a vital, bioavailable inorganic source of nitrogen and phosphorus in microbial culture media (bacteria, yeast, and fungi) and industrial fermentation processes. Widely used as an inorganic flame-retardant additive and thermal suppressant in polymer, textile, and paper research. Functions as an analytical reagent for precipitation and selective gravimetric analysis of multivalent metal cations.

Safety & Hazards

Classification: Non-hazardous substance under standard GHS criteria in routine 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 diarrhea characteristic of concentrated ammonium and phosphate 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 Analytical Buffer Salt with Slow Ammonia Release. Unsealed containers or excessive ambient heat encourage superficial loss of ammonia. Must be preserved in its original, tightly closed QReC container. Store in a clean, strictly dry, cool, and well-ventilated dedicated chemical store at controlled temperatures (below 25 to 30 degrees Celsius), sheltered from humidity and direct solar radiation. Keep strictly segregated from strong alkalis (contact with strong bases liberates toxic, pungent ammonia gas immediately), strong oxidizing agents, and concentrated mineral acids.
Precautions: Standard laboratory PPE is mandatory, including protective gloves, safety glasses, and a protective lab coat. Re-seal container cap tightly immediately after sampling to prevent efflorescence. Minimize dust generation during weighing and dispensing.