7783-33-7

Product Name: Nessler's Reagent

Formula: HgI4K2

Synonyms: Potassium tetraiodomercurate – Potassium hydroxide solution

Inquiry

CHEMICAL AND PHYSICAL PROPERTIES SAFETY INFORMATION COMPUTED DESCRIPTORS PRODUCT INTRODUCTION RELATED SUPPLIERS

CHEMICAL AND PHYSICAL PROPERTIES

Physical Description	Mercuric potassium iodide, [solid] appears as 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.
Color/Form	Yellow crystals
Odor	Odorless
Solubility	Very sol in water
Density	4.29
pH	Neutral or alkaline to litmus
Other Experimental Properties	Deliquescent in moist air; crystallizes with 1-2 mol water
Chemical Classes	Metals -> Mercury Compounds, Inorganic

SAFETY INFORMATION

Signal word	Danger
Pictogram(s)	Corrosion Corrosives GHS05 Skull and Crossbones Acute Toxicity GHS06 Health Hazard GHS08 Environment GHS09
GHS Hazard Statements	H290:Corrosive to Metals H310:Acute toxicity,dermal H314:Skin corrosion/irritation H373:Specific target organ toxicity, repeated exposure H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P273:Avoid release to the environment. P280:Wear protective gloves/protective clothing/eye protection/face protection. P314:Get medical advice/attention if you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

COMPUTED DESCRIPTORS

Molecular Weight	786.41 g/mol
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	1
Rotatable Bond Count	0
Exact Mass	787.5159 g/mol
Monoisotopic Mass	787.5159 g/mol
Topological Polar Surface Area	0 Å²
Heavy Atom Count	7
Formal Charge	0
Complexity	19.1
Isotope Atom Count	0
Defined Atom Stereocenter Count	0
Undefined Atom Stereocenter Count	0
Defined Bond Stereocenter Count	0
Undefined Bond Stereocenter Count	0
Covalently-Bonded Unit Count	3
Compound Is Canonicalized	Yes

PRODUCT INTRODUCTION

description

Mercuric potassium iodide, [solid] appears as 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.