Ammonium acetate (NH4CH3COO)- Crystalline

Characteristic

Ammonium acetate, also known as spirit of Mindererus in aqueous solution, is a chemical compound with the formula NH₄CH₃CO₂. It is a white, hygroscopic solid and can be derived from the reaction of ammonia and acetic acid. It is available commercially.

Chemical formula:C₂H₇NO₂

Molar mass:77.083 g·mol−1

Appearance:White solid crystals, deliquescent

Odor:Slightly acetic

Density:1.17 g/cm³ (20 °C);1.073 g/cm³ (25 °C)

Melting point:113 °C (235 °F; 386 K)

Solubility in water:102 g/100 mL (0 °C);148 g/100 mL (4 °C);143 g/100 mL (20 °C);533 g/100 mL (80 °C)

Solubility:Soluble in alcohol, SO2, acetone, liquid ammonia

Solubility in methanol:7.89 g/100 mL (15 °C);131.24 g/100 g (94.2 °C)

Solubility in dimethylformamide:0.1 g/100 g

Acidity (pKa):9.9

Basicity (pKb):33

Magnetic susceptibility (χ):-41.1·10−6 cm³/mol

Crystal structure:Orthorhombic

Application

Ammonium acetate is a reagent used in chromatographic analysis of various compounds such as oligos, proteins, and peptides. It is also employed with acetic acid to provide a buffer solution. Generally it behaves as a catalyst in many reactions like Knoevenagel, Borch. It is also employed as a nutrient additive.