Merck
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72190

Supelco

Nessler′s reagent

for qualitative det. of ammonia and ammonium compounds

Synonym(s):
Potassium tetraiodomercurate – Potassium hydroxide solution
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

form

liquid

Quality Level

quality

for qualitative det. of ammonia and ammonium compounds

specific analyte(s)

ammonium

technique(s)

photometry: suitable

impurities

potassium hydroxide
potassium tetraiodomercurate

density

1.16 g/mL at 20 °C

application(s)

environmental
food and beverages
general analytical

SMILES string

[K+].[K+].I[Hg--](I)(I)I

InChI

1S/Hg.4HI.2K/h;4*1H;;/q+2;;;;;2*+1/p-4

InChI key

OPCMAZHMYZRPID-UHFFFAOYSA-J

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General description

Nessler′s reagent is widely used in determination of ammonium compounds. It can be prepared using anhydrous mercuric iodide and anhydrous potassium iodide. It can be prepared from potassium tetraiodomercurate dissolved in potassium hydroxide.

Application

Nessler′s reagent has been used in determining ammonia in flow analysis regime using analytical spectrometry.

Caution

may form little sediment upon storage

Other Notes

Reagent for the determination of ammonia
The method detection limit is 0.1 mg/L.
Reference: APHA 1975.

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A - STOT RE 2

Storage Class Code

6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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