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: 3587154
• MDL number: MFCD00066650
• UNSPSC Code: 12352106
• eCl@ss: 38060103
• PubChem Substance ID: 329751483
• NACRES: NA.21

Properties

• grade: puriss. p.a. plus
• 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.

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.

Application

Ammonium hydroxide solution may be used in the following studies:

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

Ammonium hydroxide solution may be used:

• As a medium to prepare magnetite (Fe₃O₄) nanoparticles via a modified controlled chemical coprecipitation method.
• 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.

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