rock mineral collection

Ammonium chloride is a white, odorless, crystalline inorganic compound with the chemical formula N H 4 C l NH 4 Cl. It is highly soluble in water, producing a mildly acidic solution due to the ammonium ion's hydrolysis. The compound is known for its sublimation property—on heating, it transitions directly from solid to gas, releasing ammonia and hydrogen chloride gases. Key Properties Chemical Formula: N H 4 C l NH 4 Cl​ Molar Mass: 53.49 g/mol​ Appearance: White, granular or crystalline powder; odorless​ Density: 1.52–1.53 g/cm³​ Melting/Sublimation Point: ~338–340 °C (sublimes without melting)​ Solubility: Highly soluble in water, forms a slightly acidic solution (pH 4.6–6.0 for 5% in water)​ Hygroscopic: Absorbs moisture from the air​ Chemical Properties and Reactions Decomposes to release ammonia and hydrogen chloride on heating: N H 4 C l → N H 3 + H C l NH 4 Cl→NH 3 +HCl.​ Reacts with strong bases (e.g., sodium hydroxide) to produce ammonia gas.​ Reacts with sodium carbonate to yield sodium chloride, carbon dioxide, water, and ammonia.​ Applications Fertilizer: Source of nitrogen for crops.​ Metallurgy: Used in galvanizing, tinning, and soldering of metals to remove oxide coatings.​ Medicine: Expectorant in cough medicine.​ Batteries: Common electrolyte in dry cell batteries.​ Laboratory: Used in buffer solutions and analytical chemistry.​ Food Additive (E510): Used as a yeast nutrient in breadmaking and as a food additive in licorice.​ Safety Relatively low toxicity but can cause irritation if inhaled or ingested in large amounts. Should be handled with basic chemical safety measures.

Ammonium Carbonate powder is a white, crystalline inorganic compound with the chemical formula ( N H 4 ) 2 C O 3 (NH 4 ) 2 CO 3 . It is highly soluble in water, stable at room temperature, and emits a strong ammonia odor, especially when heated. In powder form, it is a convenient and widely used chemical for laboratory, industrial, and food applications. Physical and Chemical Properties Appearance: Fine white powder, sometimes slightly crystalline or granular.​ Odor: Strong, ammoniacal smell especially upon heating.​ Chemical Formula: ( N H 4 ) 2 C O 3 (NH 4 ) 2 CO 3 .​ Molecular Weight: 96.09 g/mol.​ Solubility: Freely soluble in water, less soluble in alcohol.​ pH (5% solution): About 8.6.​ Decomposition: Releases ammonia and carbon dioxide on heating; gradually decomposes even at room temperature.​ Typical Applications Used as a leavening agent (“baker's ammonia”) in thin, dry baked goods like cookies and crackers, to impart crispness and porosity.​ Constituent of smelling salts, valued for the rapid release of ammonia gas.​ pH adjuster in laboratory and industrial processes.​ Source of ammonia in cleaning, tanning, and dyeing processes.​ Employed in photography, pharmaceutical preparations, chemical synthesis, and agriculture.​ Safety and Handling Classified as harmful if swallowed and may cause skin and serious eye irritation.​ Use protective gloves, clothing, and eye protection during handling.​ Should be stored in airtight containers away from heat and moisture to prevent decomposition and ammonia loss.​