17093

Ammonium hydroxide solution

puriss. p.a. plus, ≥25% NH₃ in H₂O

• Synonym(s): Ammonia aqueous, Ammonia water
• Linear Formula: NH₄OH
• CAS Number: 1336-21-6
• Molecular Weight: 35.05
• Beilstein/REAXYS Number: 3587154
• MDL number: MFCD00066650
• UNSPSC Code: 12352106
• eCl@ss: 38060103
• PubChem Substance ID: 329751483
• NACRES: NA.21

Properties

• grade: puriss. p.a. plus
• Quality Level: 100
• form: liquid
• expl. lim.: 27 %
• concentration: ≥25% NH₃ in H₂O
• evapn. residue: ≤0.001%
• pH: 11.7 (20 °C)
• density: 0.91 g/mL at 20 °C; 0.9 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤0.2 mg/kg; phosphate (PO₄^3-): ≤0.2 mg/kg; sulfate (SO₄^2-): ≤1 mg/kg
• cation traces: Ag: ≤0.01 mg/kg; As, Sb (as As): ≤0.01 mg/kg; Au: ≤0.01 mg/kg; B: ≤0.01 mg/kg; Ba: ≤0.01 mg/kg; Be: ≤0.01 mg/kg; Bi: ≤0.01 mg/kg; Ca: ≤0.01 mg/kg; Cd: ≤0.01 mg/kg; Co: ≤0.01 mg/kg; Cr: ≤0.01 mg/kg; Cs: ≤0.01 mg/kg; Cu: ≤0.01 mg/kg; Fe: ≤0.01 mg/kg; Ga: ≤0.01 mg/kg; Ge: ≤0.01 mg/kg; In: ≤0.01 mg/kg; K: ≤0.01 mg/kg; Li: ≤0.01 mg/kg; Mg: ≤0.01 mg/kg; Mn: ≤0.01 mg/kg; Mo: ≤0.01 mg/kg; Na: ≤0.01 mg/kg; Ni: ≤0.01 mg/kg; Pb: ≤0.01 mg/kg; Pt: ≤0.01 mg/kg; Sn: ≤0.01 mg/kg; Sr: ≤0.01 mg/kg; Ti: ≤0.01 mg/kg; Tl: ≤0.01 mg/kg; V: ≤0.01 mg/kg; Zn: ≤0.01 mg/kg; Zr: ≤0.01 mg/kg
• SMILES string: [NH4+].[OH-]
• storage temp.: 2-8°C
• InChI: 1S/H3N.H2O/h1H3;1H2
• InChI key: VHUUQVKOLVNVRT-UHFFFAOYSA-N

Description

General description

Ammonium hydroxide is a weak base mainly used as a source to prepare other ammonium compounds like urea, ammonium carbonate and ammonium sulfate etc.[1]

Ammonium hydroxide solution is a solution of 30-33% NH₃ in H₂O. It is a colorless liquid having a strong characteristic odor. Electrolytic deposition of silver onto vitreous carbon electrodes from ammonium hydroxide solutions by the potential step technique has been reported.[2]

Application

Ammonium hydroxide solution may be used in the following studies:

• Preparation of magnetic nanoparticles.[3]
• To investigate the effect of substrate on the morphology of ZnS thin films by chemical bath deposition.[4]
• Preparation of amine functionalized cellulose nanocrystals (CNC-NH₂).[5]
• Wet processing of the GaAs(100) surface.[6]

Ammonium hydroxide solution may be used:

• As a medium to prepare magnetite (Fe₃O₄) nanoparticles via a modified controlled chemical coprecipitation method.[7]
• As a solvent and reagent to prepare 4-aryl and 4-alkyl-2,6-dimethyl-1,4-dihydro-3,5-pyridinedicarboxylates via Hantzsch synthesis in a microwave cavity synthesizer.[8]

Safety Information

• pictograms: GHS05,GHS07,GHS09
• signalword: Danger
• hcodes: H314,H335,H410
• pcodes: 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: 8B - Non-combustible corrosive hazardous materials
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable