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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 9941088Generated: October 23, 2026

Mercury disilver tetraiodide

MERCURIC SILVER IODIDE · SILVER MERCURIC IODIDE · SILVER TETRAIODOMERCURATE · mercurydisilvertetraiodide · MERCURY (II) SILVER IODIDE · silver tetraiodomercurate(II) · MERCURY (II) SILVER IODIDE YELLOW POWDER · MERCURY (II) SILVER IODIDE ISO 9001：2015 REACH

https://huagongshe.com/en/chemical/9941088

Mercury disilver tetraiodide molecular structure

Identifiers & Physical Properties

CAS No.12344-40-0
Molecular formulaAg2HgI4
Average molar mass923.95 g/mol
Monoisotopic mass923.398729 g/mol
SMILES[Ag+].[Ag+].[Hg+2].[I-].[I-].[I-].[I-]
InChIKeyYNTJRFXPYRRRKS-UHFFFAOYSA-J
PubChem CID9941088
EC No.232-045-9
DTXSIDDTXSID00999046

Chemical & Physical Properties

Topological polar surface area0
Hydrogen bond donors0
Hydrogen bond acceptors4
Rotatable bonds0
Heavy atoms7
Formal charge0
Complexity0
Melting pointβ: decomposes 158℃ [CRC10]
Density6.100
Solubilityinsoluble in H2O, dilute acid solutionsinsoluble H2O, dilute acidssoluble in solutions of alkali iodides or cyanides [MER06]
Physical statePowder
ColorYellow
SensitivityLight Sensitive
Exposure limitsACGIH: TWA 0.025 mg/m3 (Skin)NIOSH: IDLH 10 mg/m3TWA 0.05 mg/m3Ceiling 0.1 mg/m3
FDA UNIISOM6DF79O4
GHS pictogramGHS06,GHS08,GHS09
GHS hazard statementsH300-H310-H330-H373-H400-H410
GHS precautionary statementsP301+P310a-P304+P340-P320-P330-P405-P501a
Risk statements (R)26/27/28-33-50/53
Safety statements (S)13-28-45
UN transport number2025
Hazard class6.1
Packing groupII

Safety & Regulations

GHS classificationDangerH300 (100%): Fatal if swallowed [Danger Acute toxicity, oral]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, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 5 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
UN transport number2025
Risk statements (R)26/27/28-33-50/53
GHS pictogramGHS06,GHS08,GHS09
Safety statements (S)13-28-45
Hazard class6.1
Packing groupII
GHS hazard statementsH300-H310-H330-H373-H400-H410
GHS precautionary statementsP301+P310a-P304+P340-P320-P330-P405-P501a

Applications & Uses

Uses

Thermal sensor to detect overheating in journal bearings, etc., becomes blood-red at 40-50° and yellow again on cooling.