Identification | Back Directory | [Name]
NESSLER'S REAGENT | [CAS]
7783-33-7 | [Synonyms]
Nessler nessler’s NESSLER REAGENT MAYER'S REAGENT NESSLERS REAGENT NESSLER'S REAGENT NESSLER'S SOLUTION AMMONIA NITROGEN 2 channing’ssolution NESSLER'S REAGENT A Dipotassium tetraiod NESSLER REAGENT, APHA potassiumiodomercurate potassiummercuriiodide Mercury potassium iodide POTASSIUM MERCURY IODIDE POTASSIUM MERCURIC IODIDE NESSLER REAGENT, FOLIN-WU MERCURIC POTASSIUM IODIDE Mercuric potassium iodite NESSLER'S REAGENT SOLUTION NESSLER'S REAGENT (King's ) potassium tetraiodomercurate Kaliumtetrajodomercurat (II) MERCURY(II) POTASSIUM IODIDE MERCURIC-POTASSIUM IODIDE TS dipotassiumtetraiodomercurate mercuricpotassiumiodide,solid mercurypotassiumiodide(k2hgi4) mercuricpotassiumiodide,[solid] solutionpotassiumiodohydragyrate NESSLER'S REAGENT (QUANTITATIVE) POTASSIUM TETRAIODOMERCURATE(II) dipotassiumtetraiodomercurate(2-) MERCURIC POTASSIUM IODIDE REAGENT tetraiodo-mercurate(2-dipotassium Mayers Reagent, USP Test Solution NESSLER REAGENT, FOLIN-WU, MODIFIED MERCURIC-POTASSIUM IODIDE TS, ALKALINE POTASSIUM TETRAIODOMERCURATE(II), 99.99% tetraiodo-,dipotassium,(T-4)-Mercurate(2-) dipotassium,(beta-4)-mercurate(2-tetraiodo- Mercurate(2-), tetraiodo-, dipotassium, (T-4)- Mercury(II) chloride - potassium iodide solution NESSLER'S REAGENT, DILUTE FOLIN-WU NITROGEN DETECTION NESSLER'S REAGENT FOR DET. OF AMMONIA AN D AMMONIUM COMP. potassium tetraiodomercurate - potassium hydroxide solution Potassium tetraiodomercurate(II), (trace metal basis), 99.99% PotassiuM tetraiodoMercurate(II), 99.99%, (trace Metal basis) DIPOTASSIUM TETRAIODOMERCURATE(II) IN DILUTE SODIUM HYDROXIDE Nessler’s reagent,Potassium tetraiodomercurate – Potassium hydroxide solution Nessler’s reagent,Dipotassium tetraiodomercurate(II) in dilute sodium hydroxide | [EINECS(EC#)]
231-990-4 | [Molecular Formula]
HgI4K2 | [MDL Number]
MFCD00049656 | [MOL File]
7783-33-7.mol | [Molecular Weight]
786.4 |
Chemical Properties | Back Directory | [Definition]
Solution of mercuric iodide in
potassium iodide. | [Appearance]
light yellow liquid | [Melting point ]
120-127 °C(lit.) | [Boiling point ]
105°C | [density ]
1.16 g/mL at 20 °C
| [Fp ]
>230 °F
| [solubility ]
very soluble in H2O; soluble in ethanol,ethyl ether, acetone | [form ]
Liquid | [color ]
Yellow to orange | [Specific Gravity]
1.097 | [Odor]
Odorless | [Stability:]
Stable, but light sensitive. Incompatible with strong oxidizing agents. | [Water Solubility ]
Soluble in water. | [Sensitive ]
Hygroscopic | [Merck ]
13,7773 | [Exposure limits]
ACGIH: TWA 0.025 mg/m3 (Skin) NIOSH: IDLH 10 mg/m3; TWA 0.05 mg/m3; Ceiling 0.1 mg/m3 | [InChIKey]
OPCMAZHMYZRPID-UHFFFAOYSA-J | [Uses]
Detecting the presence of ammonia, particularly
in very small amounts. | [EPA Substance Registry System]
Potassium mercuric iodide (7783-33-7) |
Hazard Information | Back Directory | [Chemical Properties]
light yellow liquid | [General Description]
Odorless yellow crystals. Crystallizes with either one, two or three molecules of water. Soluble in water and denser than water. Commercially available in the anhydrous form. Highly toxic by ingestion, inhalation, and skin absorption. | [Air & Water Reactions]
Deliquescent. Very water soluble. | [Reactivity Profile]
MERCURIC POTASSIUM IODIDE is incompatible with acetylene, ammonia, chlorine dioxide, azides, calcium (amalgam formation), sodium carbide, lithium, rubidium, copper . NESSLER'S REAGENT behave in aqueous solution as a weak acid. | [Health Hazard]
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | [Fire Hazard]
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways. | [Hazard]
Highly toxic by ingestion, inhalation, and
skin absorption. | [Preparation]
It is prepared by mixing 2g potassium iodide in 5ml water. To this solution, 3g of mercury (II) iodide is added, and the resulting solution is made to 20ml. Finally, 40g potassium hydroxide (30 %) is added to provide the alkaline base. |
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