17093

Idrossido di ammonio

puriss. p.a. plus, ≥25% NH₃ in H₂O

• Sinonimo/i: Ammoniaca acquosa, Ammoniaca in acqua
• Formula condensata: NH₄OH
• Numero CAS: 1336-21-6
• Peso molecolare: 35.05
• Beilstein: 3587154
• Numero MDL: MFCD00066650
• Codice UNSPSC: 12352106
• eCl@ss: 38060103
• ID PubChem: 329751483
• NACRES: NA.21

Proprietà

• Grado: puriss. p.a. plus
• Livello qualitativo: 100
• Stato: liquid
• Limite di esplosione: 27 %
• Concentrazione: ≥25% NH₃ in H₂O
• Residuo dopo evaporazione: ≤0.001%
• pH: 11.7 (20 °C)
• Densità: 0.91 g/mL at 20 °C; 0.9 g/mL at 25 °C (lit.)
• Anioni in tracce: chloride (Cl^-): ≤0.2 mg/kg; phosphate (PO₄^3-): ≤0.2 mg/kg; sulfate (SO₄^2-): ≤1 mg/kg
• Cationi in tracce: 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
• Stringa SMILE: [NH4+].[OH-]
• Temperatura di conservazione: 2-8°C
• InChI: 1S/H3N.H2O/h1H3;1H2; VHUUQVKOLVNVRT-UHFFFAOYSA-N

Descrizione

Descrizione generale

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.

Applicazioni

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.

Informazioni sulla sicurezza

• Pittogrammi: GHS05,GHS07,GHS09
• Avvertenze: Danger
• Indicazioni di pericolo: H314,H335,H410
• Consigli di prudenza: P261 - P271 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Classi di pericolo: Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3
• Organi bersaglio: Respiratory system
• Codice della classe di stoccaggio: 8B - Non-combustible corrosive hazardous materials
• Classe di pericolosità dell'acqua (WGK): WGK 2
• Punto d’infiammabilità (°F): Not applicable
• Punto d’infiammabilità (°C): Not applicable