Agent Name

Mercuric potassium iodide

Alternative Name

Nessler reagent

CAS Number

7783-33-7

Formula

Hg-I4.2K

Major Category

Metals

Synonyms

Nessler reagent; Potassium tetraiodomercurate; Channing's solution; Dipotassium tetraiodomercurate; Dipotassium tetraiodomercurate(2-); Mayer's reagent; Mercurate(2-), tetraiodo-, dipotassium; Mercuric potassium iodide, solid; Mercury potassium iodide; Mercury potassium iodide (K2HgI4); Mercury(II) potassium iodide; Nessler reagent; Potassium iodomercurate; Potassium mercuric iodide; Potassium mercuriiodide; Potassium mercury iodine; Potassium tetraiodomercurate (II); Potassium tetraiodomercurate(II); Solution potassium iodohydragyrate; [ChemIDplus] UN1643

Category

Mercury Compounds, Inorganic

Description

Yellow odorless solid; Deliquescent in air; [Hawley] Light yellow crystalline solid; [MSDSonline]

Sources/Uses

Used for detecting trace amounts of ammonia and as a topical anti-infective and disinfectant; [HSDB]

Comments

Highly toxic by ingestion; Also toxic by inhalation and dermal exposure; [Hawley] Concern about effects on fetal thyroid, but no studies found; [REPROTOX] An irritant; Can be absorbed through skin; [MSDSonline] See "Mercury, inorganic compounds" and the linked occupational disease.

Exposure Assessment
Skin Designation (ACGIH)

Yes

TLV (ACGIH)

0.02 mg/m3, as Hg (0.01 ppm, inhalable fraction and vapor (iodides))

PEL (OSHA)

0.1 mg/m3, as Hg

MAK

0.02 mg/m3, as Hg, inhalable fraction

IDLH (NIOSH)

10 mg/m3, as Hg

Adverse Effects
Neurotoxin

Sensorimotor Neuropathy

Hepatotoxin

Hepatotoxin, Secondary

Nephrotoxin

Yes

Reproductive Toxin

Yes

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information

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Chemical Information

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Related Information in HazMap
Other Information

No other related information on this agent was found.