Potassium tetraiodomercurate(II)
碘化汞钾
Also known as: Nessler's reagent, Mercury(II) potassium iodide, Potassium mercuric iodide, Mayer's reagent, Dipotassium tetraiodomercurate, Mercuric potassium iodide, Tetraiodomercurate(2-) dipotassium
Potassium tetraiodomercurate(II) (CAS 7783-33-7) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula HgI4K2 and a molecular weight of 786.40400 g/mol. It is also known as Nessler's reagent, Mercury(II) potassium iodide and Potassium mercuric iodide. Key properties include a melting point of 120-127 °C(lit.), a density of 1.16 g/mL at 20 °C and a flash point of >230 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 7783-33-7
- Jingsj CID
- J-42479-6
- Molecular Formula
- HgI4K2
- Chinese Name
- 碘化汞钾
- Molecular Weight
- 786.40400 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 120-127 °C(lit.) |
|---|---|
| Density | 1.16 g/mL at 20 °C |
| Flash Point | >230 °F |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Potassium tetraiodomercurate(II)?
The CAS number of Potassium tetraiodomercurate(II) is 7783-33-7.
What are the molecular formula and molecular weight of Potassium tetraiodomercurate(II)?
Potassium tetraiodomercurate(II) has molecular formula HgI4K2 and molecular weight 786.40400 g/mol.
Is Potassium tetraiodomercurate(II) hazardous?
Potassium tetraiodomercurate(II) has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Potassium tetraiodomercurate(II) (CAS 7783-33-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42479-6 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.