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CAS No. 7783-33-7
CBNumber: CB2481117
Molecular Formula: HgI4K2
Formula Weight: 786.4
MOL File: 7783-33-7.mol
Melting point : 120-127 °C(lit.)
density : 1.16 g/mL at 20 °C
Fp : >230 °F
Water Solubility : Soluble in water.
Sensitive : Hygroscopic
Merck : 13,7773
Stability:: Stable, but light sensitive. Incompatible with strong oxidizing agents.
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes : T,N,T+
Risk Statements : 26/27/28-33-35-51/53-52/53-23/24/25-48/21/22-25-50/53-68-24/25
Safety Statements : 45-36/37-61-36/37/39-28-26-60-13
RIDADR : UN 3287 6.1/PG 3
WGK Germany : 3
RTECS : OU9670000
F : 8-30
TSCA : Yes
HazardClass : 6.1
PackingGroup : II
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404
H300 Fatal if swallowed Acute toxicity,oral Category 1, 2 Danger P264, P270, P301+P310, P321, P330,P405, P501
H310 Fatal in contact with skin Acute toxicity,dermal Category 1, 2 Danger P262, P264, P270, P280, P302+P350,P310, P322, P361, P363, P405, P501
H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501
H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501
H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P273 Avoid release to the environment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P320 Specific treatment is urgent (see … on this label).
P330 Rinse mouth.
P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

NESSLER'S REAGENT Chemical Properties,Usage,Production

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.
NESSLER'S REAGENT Preparation Products And Raw materials
Raw materials
Potassium iodide MERCURY Nitric acid
Preparation Products
NESSLER'S REAGENT Suppliers      Global( 74)Suppliers     
Supplier Tel Fax Email Country ProdList Advantage
Shandong Ono Chemical Co., Ltd. 0539-6362799(To 20)
0539-6362799(To 20) China 10088 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96832 76
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30315 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 China 44198 61
Shanghai Hanhong Scientific Co.,Ltd. 021-54306202,021-54302127,021-54308259,13764082696
+86-21-54291107 China 28718 64
Chengdu XiYa Chemical Technology Co., Ltd. 4008-626-111
028-84752058 China 9747 57
BEST-REAGENT 028-85973071 028-85973075
028-85973075 China 9970 57
Sinopharm Chemical Reagent Co,Ltd. 86-21-63210123
86-21-63290778 86-21-63218885 China 9988 79
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 QQ:452520369
+86 (573) 82222643 China 11852 57
Spectrum Chemical Manufacturing Corp. 021-67601398-808
021-57711696 China 9334 60
7783-33-7(NESSLER'S REAGENT)Related Search:
Nitrogen Iodine MERCURY Mercury iodide MERCURY(II) IODIDE Mercury chloride Potassium iodide NESSLER'S REAGENT
POTASSIUM TETRAIODOMERCURATE(II) POTASSIUM MERCURY IODIDE POTASSIUM MERCURIC IODIDE NESSLER'S SOLUTION NESSLER REAGENT NESSLER REAGENT, APHA NESSLER REAGENT, FOLIN-WU NESSLER REAGENT, FOLIN-WU, MODIFIED NESSLERS REAGENT NESSLER'S REAGENT NESSLER'S REAGENT A NESSLER'S REAGENT, DILUTE FOLIN-WU NITROGEN DETECTION NESSLER'S REAGENT (QUANTITATIVE) NESSLER'S REAGENT SOLUTION Special Applications Waste Water Water Test Mercury Life Science AMMONIA NITROGEN 2 7783-33-7 Analytical Chromatography Product Catalog Analytical Reagents Catalysis and Inorganic Chemistry MAYER'S REAGENT MERCURY(II) POTASSIUM IODIDE MERCURIC POTASSIUM IODIDE MERCURIC-POTASSIUM IODIDE TS MERCURIC-POTASSIUM IODIDE TS, ALKALINE Mercury potassium iodide DIPOTASSIUM TETRAIODOMERCURATE(II) IN DILUTE SODIUM HYDROXIDE channing’ssolution dipotassium,(beta-4)-mercurate(2-tetraiodo- dipotassiumtetraiodomercurate dipotassiumtetraiodomercurate(2-) mercuricpotassiumiodide,[solid] mercuricpotassiumiodide,solid mercurypotassiumiodide(k2hgi4) nessler’s potassiumiodomercurate potassiummercuriiodide solutionpotassiumiodohydragyrate tetraiodo-,dipotassium,(T-4)-Mercurate(2-) tetraiodo-mercurate(2-dipotassium NESSLER'S REAGENT FOR DET. OF AMMONIA AN D AMMONIUM COMP. NESSLER'S REAGENT (King's ) MERCURIC POTASSIUM IODIDE REAGENT K2HgI4 Nessler Mercurate(2-), tetraiodo-, dipotassium, (T-4)- potassium tetraiodomercurate - potassium hydroxide solution potassium tetraiodomercurate Kaliumtetrajodomercurat (II) Inorganics Mercury(II) chloride - potassium iodide solution POTASSIUM TETRAIODOMERCURATE(II), 99.99% Mercuric potassium iodite HGI4K2
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