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221090

Sigma-Aldrich

Mercury(II) iodide

ACS reagent, ≥99.0%

Synonym(s):

Mercuric iodide red

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About This Item

Linear Formula:
HgI2
CAS Number:
7774-29-0
Molecular Weight:
454.40
EC Number:
231-873-8
MDL number:
MFCD00011044
UNSPSC Code:
12352302
PubChem Substance ID:
329752248
NACRES:
NA.21

grade

ACS reagent

Assay

≥99.0%

form

powder

reaction suitability

reagent type: catalyst
core: mercury

impurities

≤0.05% soluble Hg salts

bp

354 °C (lit.)

mp

259 °C (lit.)

solubility

potassium iodide solution: passes test

cation traces

Hg+: ≤0.1%

SMILES string

I[Hg]I

InChI

1S/Hg.2HI/h;2*1H/q+2;;/p-2

InChI key

YFDLHELOZYVNJE-UHFFFAOYSA-L

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General description

Red mercuric oxide possesses the ability to detect high energy radiation (X- and γ-rays) and is used in nuclear radiation detectors.

Application

Mercury(II) iodide may be used in the preparation of the following:
  • mercury(II) acetate
  • di­iodo­bis(1-methyl-1,3-imidazolium-2-thiol­ato-S)­mercury(II)
  • [Hg2(L)(I)4] and [(L′)Hg(μ-I)2HgI2]n (L = N, N′-bis(phenyl(pyridin-2-yl)methylene)propane-1,2-diamine, L′ = N-(phenyl(pyridin-2-yl)methylene)propane-1,2-diamine)

Signal Word

Danger

Hazard Classifications

Acute Tox. 1 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - STOT RE 2

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Preliminary results on mercuric iodide nuclear radiation detectors.
Ponpon JP, et al.
Nuclear Instruments and Methods in Physics Research, 119, 197-198 (1974)
Mercuric iodide for room temperature radiation detectors. Synthesis, purification, crystal growth and defect formation.
Piechotka M.
Materials Science & Engineering. R, Reports : A Review Journal, 18(1), 1-98 (1997)
Syntheses, Characterization, and Crystal Structures of a Dinuclear Complex and Coordination Polymer of Mercury (II) with Schiff Base Ligands containing N3 and N4 Donors.
Abedi M, et al.
Zeitschrift fur Anorganische und Allgemeine Chemie, 640(11), 2193-2197 (2014)
Diiodobis (1-methyl-1, 3-imidazolium-2-thiolato-S) mercury (II).
Pavlovic G, et al.
Acta Crystallographica Section C, Crystal Structure Communications, 56(7), 801-803 (2000)
Eagleson M.
Concise Encyclopedia Chemistry, 637-637 (1994)
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