Potassium mercuric iodide

Name: Potassium mercuric iodide
Brand: Vaqora Chemicals
SKU: VQ-014047

About Potassium mercuric iodide

Potassium mercuric iodide is an alkali metal compound carrying the CAS registry number 7783-33-7. Its molecular formula is HgI4K2 and its molecular weight is 786.41 g/mol. Systematically, it is named dipotassium. Tetraiodomercury(2-). Alternative names: Potassium tetraiodidomercurate and Nessler's reagent.

The material typically appears as a yellow to dark orange powder to crystalline powder. Reported physical data include a density of 4.29 g/cm3. Keep the container tightly sealed and store it in a cool, dry area. The GHS classification uses the signal word “Danger”, so appropriate gloves, eye protection and ventilation are recommended.

Key uses span materials research and chemical synthesis. Our customers for this product work in academic and industrial research.

Vaqora Chemicals supplies Potassium mercuric iodide in 25 g, 100 g and 1 kg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Materials research
Chemical synthesis

Industries

Specifications & identifiers

Chemical identifiers
Product name	Potassium mercuric iodide
Catalogue No.	VQ-014047
CAS Number	7783-33-7
IUPAC name	dipotassium;tetraiodomercury(2-)
Molecular formula	HgI₄K₂
Molecular weight	786.41 g/mol
Exact mass	787.5159
HSN code	28520000
InChIKey	OPCMAZHMYZRPID-UHFFFAOYSA-J
SMILES	[K+].[K+].I[Hg-2](I)(I)I
PubChem CID	24542

Physical properties
Physical form	Powder
Appearance	Yellow to dark orange powder to crystalline powder
Density	4.29 g/cm3
H-bond donors / acceptors	0 / 1
TPSA	0 Å²
Synonyms	Potassium tetraiodidomercurate, Nessler's reagent, Dipotassium tetraiodomercurate, Mayer's reagent, Potassium tetraiodomercurate(II), Nessler reagent, Potassium iodomercurate, Mercury potassium iodide, Mercury(II) potassium iodide, Potassium mercuriiodide, Potassium mercury iodine, Potassium tetraiodomercurate

Safety & hazard information (GHS)

Toxic

Health hazard

Environmental hazard

Signal word: Danger

Hazard statements

H300Fatal if swallowed
H310Fatal in contact with skin
H330Fatal if inhaled
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects

Precautionary statements: P260, P262, P264, P270, P271, P273, P280, P284, P301 + P316, P302 + P352, P304 + P340, P316, P319, P320, P321, P330, P361 + P364, P391, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 7783-33-7

Nessler's (King) reagent

CAS: 7783-33-7
Formula: HgI₄K₂
MW: 786.41 g/mol

VQ-003608

Nesslers reagent

CAS: 7783-33-7
Formula: HgI₄K₂
MW: 786.41 g/mol

VQ-003609

Potassium mercuric iodide, solution

CAS: 7783-33-7
Formula: HgI₄K₂
MW: 786.41 g/mol

VQ-003632

Frequently asked questions

What is the CAS number of Potassium mercuric iodide?

The CAS Registry Number of Potassium mercuric iodide is 7783-33-7. It is also known as Potassium tetraiodidomercurate, Nessler's reagent, Dipotassium tetraiodomercurate.

What is the molecular formula and molecular weight of Potassium mercuric iodide?

Potassium mercuric iodide has the molecular formula HgI4K2 and a molecular weight of 786.41 g/mol.

Which grade and pack sizes of Potassium mercuric iodide can I order?

We supply Potassium mercuric iodide, in 25 g, 100 g, 1 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Potassium mercuric iodide?

Yes. Every lot of Potassium mercuric iodide is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Potassium mercuric iodide be shipped internationally?

Yes. Potassium mercuric iodide is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.