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POTASSIUM TETRAIODOMERCURATE(2-) [1 record]

Record 1 2011-01-07

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
K2Hg•I4
formula, see observation
7783-33-7
CAS number
DEF

Solution of mercuric iodide in potassium iodide [used for] detecting the presence of ammonia, particularly in very small amounts.

CONT

A Nessler's reagent test doesn't differentiate between ammonia and ammonium ion (NH4+) or other compounds with an amine group attached but a salicylate test reports ammonia only.

OBS

Nessler's reagent: potassium tetraiodomercurate(2-)

OBS

Chemical formula: K2Hg•I4

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
K2Hg•I4
formula, see observation
7783-33-7
CAS number
DEF

Solution alcaline de mercuri-iodure de potassium; utilisé pour la recherche et le dosage colorimétrique des traces d'ammoniac (coloration ou précipitation jaune-rougeâtre).

CONT

Réactif de Nessler des sels d'ammonium.

CONT

Le réactif de Nessler, en milieu basique et en présence d'ions ammonium, forme un complexe orangé qui permet un dosage colorimétrique des ions NH4+.

OBS

réactif de Nessler : tétraiodomercurate(2-) de potassium.

OBS

Formule chimique : K2Hg•I4

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
K2Hg•I4
formula, see observation
7783-33-7
CAS number
OBS

Fórmula química: K2Hg•I4

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