1.05426

Ammonia solution

32%, EMPLURA^®

• Synonyme(s) : Ammoniaque
• Formule linéaire : NH₄OH
• Numéro CAS: 1336-21-6
• Poids moléculaire : 35.05
• Beilstein: 3587154
• Numéro MDL: MFCD00066650
• Code UNSPSC : 12352402
• Nomenclature NACRES : NA.21

Propriétés

• Nom du produit: Hydroxyde d′ammonium solution, EMPLURA^®
• Pression de vapeur: 837 hPa ( 20 °C)
• Niveau de qualité: 200
• Gamme de produits: EMPLURA^®
• Forme: liquid
• Limite d'explosivité: 27 %
• Concentration: ≥30% (NH₃, acidimetric)
• Impuretés: ≤0.0001% Heavy metals (as Pb); ≤0.0005% Fe (Iron); ≤0.0008% Substances reducing potassium permanganate (as O); ≤0.002% Chloride (Cl); ≤0.003% Sulphate (SO?)
• Résidus de calcination: ≤0.003% (as sulphates)
• Couleur: APHA: ≤10
• pb: 37.7 °C/1013 hPa
• Pf: -91.5 °C
• Densité: 0.9 g/mL at 25 °C (lit.)
• Température de stockage: 2-30°C
• Chaîne SMILES: [NH4+].[OH-]
• InChI: 1S/H3N.H2O/h1H3;1H2
• Clé InChI: VHUUQVKOLVNVRT-UHFFFAOYSA-N

Description

Application

• Highly Efficient Recovery of Au(I) from Gold Leaching Solution Using Sodium Dimethyldithiocarbamate.: This study explores the effective recovery of gold using sodium dimethyldithiocarbamate in an ammonia-rich environment, highlighting the interaction with ammonia solution and its impact on the leaching process (Yang et al., 2024).


• Oxidation mechanism of pyrite in a thiosulfate solution: electrochemical impedance (EIS) and in situ Raman spectroscopy.: Explores the oxidation processes of pyrite in thiosulfate solutions facilitated by ammonia, examining the electrochemical properties and kinetics involved in the oxidation mechanism (Tamayo et al., 2023).

Conditionnement

Due to quality and safety aspects Ammonia Solution will no longer be offered in glass bottles but solely in HDPE bottles.

Please note the following replacements:
1054261000 (1 L glass bottle) replaced by 1054261011 (1 L HDPE bottle)
1054262500 (2.5 L glass bottle) replaced by 1054262511 (2.5 L HDPE bottle)

More information about our ergonomic and unbreakable HDPE bottles can be found here: www.SigmaAldrich.com/hdpe-bottle

Remarque sur l'analyse

Assay (acidimetric, NH₃): ≥ 30 %
Identity: passes test
Colour: ≤ 10 Hazen
Chloride (Cl): ≤ 0.002 %
Sulphate (SO₄): ≤ 0.003 %
Heavy metals (as Pb): ≤ 0.0001 %
Fe (Iron): ≤ 0.0005 %
Substances reducing potassium permanganate (as O): ≤ 0.0008 %
Residue on ignition (as sulphates): ≤ 0.003 %

Informations légales

EMPLURA is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS05,GHS07,GHS09
• Mention d'avertissement: Danger
• Mentions de danger: H314 - H335 - H410
• Conseils de prudence: P261 - P271 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338
• Classification des risques: Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1B - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 8B - Non-combustible, corrosive hazardous materials
• Classe de danger pour l'eau (WGK): WGK 2