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Nessler Reagent, Chem-Lab

Product Code. 11909222
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Quantity:
500 mL
This item is not returnable. View return policy
This item is not returnable. View return policy

Description

Used to detect ammonia. Nessler Reagent, Chem-Lab is a solution of potassium iodide and mercury chloride/mercury iodide, plus sodium hydroxide in water. It is used for qualitative determination of ammonia and ammonium compounds.

Nessler reagent (K2HgI4) is a solution prepared by combining sodium hydroxide and potassium iodide with mercuric chloride or mercury iodide. When reacted with gaseous ammonia, it produces brown fumes. When passed through a solution of ammonia, it produces a dirty brown precipitate.

Chemical Identifiers

CAS 7783-33-7
Molecular Formula H4HgI4K2
Molecular Weight (g/mol) 790.44
MDL Number MFCD00049656
InChI Key ZCPVFAXYZYZMBC-UHFFFAOYSA-N
Synonym nessler's reagent, nessler reagent, mayer's reagent, channing's solution, caswell no. 695, potassium iodomercurate, mercury ii potassium iodide, mercury potassium iodide, potassium mercuric iodide, mercuric potassium iodide
PubChem CID 24542
ChEBI CHEBI:51568
SMILES [K+].[K+].I.I.I.I.[Hg--]

Specifications

Color Yellow
Boiling Point 100°C
Melting Point 0°C
Composition KI-HgI2-NaOH
Solubility Information Water Soluble
IUPAC Name dipotassium;tetraiodomercury(2-)
Formula Weight 786.40g/mol
Odor Odorless
pH >12
Quantity 500 mL
Physical Form Liquid
Chemical Name or Material Mercuric potassium iodide
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Safety and Handling

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Product Identifier
  • Nessler reagent
 Signal Word
  • Danger
 Hazard Category
  • Acute toxicity Category 1
  • Acute toxicity Category 2
  • Acute toxicity Category 3
  • LONG-TERM AQUATIC HAZARD Chronic 1
  • Skin corrosion/irritation Category 1 A
  • Specific target organ toxicity after repeated exposure Category 2
 Hazard Statement
  • H301-Toxic if swallowed.
  • H310-Fatal in contact with skin.
  • H314-Causes severe skin burns and eye damage.
  • H330-Fatal if inhaled.
  • H373-May cause damage to organs.
  • H410-Very toxic to aquatic life with long lasting effects.
 Precautionary Statement
  • P260-Do not breathe dust/fume/gas/mist/vapours/spray.
  • P273-Avoid release to the environment.
  • P280-Wear protective gloves/protective clothing/eye protection/face protection.
  • P284-¢In case of inadequate ventilation! wear respiratory protection.
  • P301+P310-IF SWALLOWED: Immediately call a POISON CENTER/doctor /
  • P302+P352-IF ON SKIN: Wash with plenty of water/soap.
 Supplemental information
  • MIXTURE LIST-Contains : potassium iodide, mercury iodide, sodiumhydroxide
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