Mercury iodide
- CAS No.
- 15385-57-6
- Chemical Name:
- Mercury iodide
- Synonyms
- MERCUROUS IODIDE;MERCURY (I) IODIDE;Hg2-I2;iodomercury;Mercuric iodid;Mercury iodide;mercurydiiodide;dimercury diiodide;mercuryprotoiodide;Mercury protoiodide
- CBNumber:
- CB5446757
- Molecular Formula:
- Hg2I2
- Molecular Weight:
- 654.98
- MDL Number:
- MFCD00016137
- MOL File:
- 15385-57-6.mol
| Melting point | 290° when rapidly heated with partial decompn into Hg and HgI2 |
|---|---|
| Boiling point | sublimes at 140℃ [HAW93] |
| Density | 7.7 g/mL at 25 °C(lit.) |
| solubility | insoluble in H2O, ethanol, ethyl ether |
| form | yellow amorphous powder |
| color | yellow |
| Water Solubility | g/L solution H2O: 2.0×10?7 (25°C) [KRU93]; insoluble alcohol, ether [MER06]; soluble castor oil, ammonia [HAW93] |
| Solubility Product Constant (Ksp) | pKsp: 28.72 |
| CAS DataBase Reference | 15385-57-6(CAS DataBase Reference) |
| FDA UNII | HT0935F2JR |
| NIST Chemistry Reference | Mercury iodide(15385-57-6) |
| EPA Substance Registry System | Mercury iodide (Hg2I2) (15385-57-6) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS08,GHS09,GHS06 |
|---|---|
| Signal word | Danger |
| Hazard statements | H310-H373-H410-H300-H330 |
| Precautionary statements | P264-P270-P301+P310-P321-P330-P405-P501-P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501-P273-P391-P501-P262-P264-P270-P280-P302+P350-P310-P322-P361-P363-P405-P501-P260-P314-P501 |
| Hazard Codes | T+,N |
| Risk Statements | 26/27/28-33-50/53 |
| Safety Statements | 13-28-45-60-61 |
| RIDADR | UN 1638 6.1/PG 2 |
| WGK Germany | 3 |
| F | 8 |
| HazardClass | 6.1(b) |
| PackingGroup | III |
| HS Code | 28521000 |
Mercury iodide Chemical Properties,Uses,Production
Chemical Properties
bright yellow, amorphous, odorless, tasteless powder(s); darkens or becomes greenish in light forming HgI and liquid Hg; color changes to dark yellow, orange, and orange-red when heated, reverse order when cooled; enthalpy of fusion 27.00 kJ/mol; can be made by precipitation in HgNO3 solution with KI; used as a topical antibacterial agent in medicine [HAW93] [MER06] [KIR81] [CRC10]
General Description
Bright yellow powder. Becomes greenish on exposure to light due to disproportionation into metallic mercury and mercuric iodide. Insoluble in water but soluble in castor oil and aqueous ammonia. Becomes dark yellow, orange and red on heating but yellow again upon cooling. Density approx. 7.7 g / cm3. Toxic by inhalation and by ingestion.
Air & Water Reactions
Insoluble in water.
Reactivity Profile
MERCUROUS IODIDE is incompatible with acetylene, ammonia, chlorine dioxide, azides, calcium (amalgam formation), sodium carbide, lithium, rubidium, copper .
Health Hazard
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
Fire Hazard
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways.