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Nessler Reagent, Chem-Lab

Catalog Number 11909222
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Quantity:
100 mL
500 mL
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7783-33-7
H4HgI4K2
790.44
MFCD00049656
ZCPVFAXYZYZMBC-UHFFFAOYSA-N
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
24542
CHEBI:51568
[K+].[K+].I.I.I.I.[Hg--]
This item is not returnable. View return policy
7783-33-7
H4HgI4K2
790.44
MFCD00049656
ZCPVFAXYZYZMBC-UHFFFAOYSA-N
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
24542
CHEBI:51568
[K+].[K+].I.I.I.I.[Hg--]

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.
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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