338818

Ammonium hydroxide solution

28% NH₃ in H₂O, ≥99.99% trace metals basis

• Synonym(s): Ammonia aqueous, Ammonia water
• Linear Formula: NH₄OH
• CAS Number: 1336-21-6
• Molecular Weight: 35.05
• Beilstein: 3587154
• MDL number: MFCD00066650
• UNSPSC Code: 12352106
• eCl@ss: 38060103
• PubChem Substance ID: 329754690
• NACRES: NA.21

Properties

• Assay: ≥99.99% trace metals basis
• form: liquid
• expl. lim.: 27 %
• concentration: 28% NH₃ in H₂O
• pH: 11.7 (20 °C)
• density: 0.9 g/mL at 25 °C (lit.); 0.9 g/mL at 25 °C
• storage temp.: 2-8°C
• SMILES string: [NH4+].[OH-]
• InChI: 1S/H3N.H2O/h1H3;1H2
• InChI key: VHUUQVKOLVNVRT-UHFFFAOYSA-N

Description

General description

Ammonium hydroxide solution is also called aqueous ammonia, aqua ammonia, or ammonia water. It is a weak base mainly used as a nitrogen source to prepare other nitrogen-containing organic and inorganic chemicals such as urea, ammonium carbonate, ammonium sulfate, etc.

Application

Ammonium hydroxide solution (28% NH₃ in H₂O) can be used as:

• A medium to prepare magnetite (Fe₃O₄) nanoparticles via a modified controlled chemical coprecipitation method using divalent or trivalent iron salts as iron precursors.      
• A reagent in ammonolysis.      
• A solvent to synthesize 1, 4 dihydropyridines via one-pot condensation of an aldehyde and alkyl acetoacetate.

Safety Information

• Pictograms: GHS05,GHS07,GHS09
• Signal Word: Danger
• Hazard Statements: H314,H335,H410
• Precautionary Statements: P261 - P271 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Hazard Classifications: Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3
• Target Organs: Respiratory system
• Storage Class Code: 8B - Non-combustible corrosive hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable