CAS 12027-06-4PubChem CID 25487
Ammonium iodide
Ammonium iodide is the iodide salt of ammonia. It is an iodide salt and an ammonium salt. — ChEBI
- IUPAC name
- azanium iodide
- Molecular formula
- H4IN
- Molecular weight
- 144.943 g/mol
- Exact mass
- 144.93885 Da
- Topological polar surface area
- 1.0 Ų
- Hydrogen-bond donors
- 1
- Hydrogen-bond acceptors
- 1
- Covalent units
- 2
- Defined stereocentres
- 0
Also known as
Ammonium jodatumAmmonium iodide ((NH4)I)AmmoniumiodidOZ8F027LDHAMMONIUM IODATUMCHEBI:63040RefChem:58061234-717-7
13 more reported names
Iodide anion standard solutionAmmonium-iodidUNII-OZ8F027LDH(NH4)IHSDB 476EINECS 234-717-7(S)-ammonium iodideNH4IAMMONIUM IODIDE [MI]AMMONIUM IODIDE [HSDB]AMMONIUM IODATUM [HPUS]AMMONIUM IODIDE [MART.]AMMONIUM IODIDE [WHO-DD]
External database identifiers
- ChEBI:CHEBI:63040
- EPA DTXSID:DTXSID60894063
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match25487
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 220 °C (VACUUM) Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: COLORLESS CUBIC CRYSTALS Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: WHITE TETRAGONAL CRYSTALS OR GRANULAR POWDER Source: Hazardous Substances Data Bank (HSDB)
- Density: 2.56 at 68 °F (USCG, 1999) - Denser than water; will sink Source: CAMEO Chemicals
- Density: 2.514 @ 25 °C Source: Hazardous Substances Data Bank (HSDB)
- Density: 2.51 @25 °C Source: PAC Chemical Database, U.S. Department of Energy
- Melting Point: 551 °C SUBLIMES Source: Hazardous Substances Data Bank (HSDB)
- Odor: ODORLESS Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: Ammonium iodide is an odorless white solid. Sinks and mixes with water. (USCG, 1999) Source: CAMEO Chemicals
- Physical Description: White odorless solid; Very hygroscopic; Turns yellow to brown upon exposure to light and air; [Merck Index] White odorless granules; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Refractive Index: INDEX OF REFRACTION: 1.7031 Source: Hazardous Substances Data Bank (HSDB)
- Solubility: WATER: 154.2 G/100 CC @ 0 °C; 230.3 G/100 CC @ 100 DEG Source: Hazardous Substances Data Bank (HSDB)
- Solubility: GLYCEROL: 1 G/1.5 ML; ALC: 1 G/3.7 ML; METHANOL: 1 G/2.5 ML Source: Hazardous Substances Data Bank (HSDB)
- Solubility: VERY SOL IN ACETONE, AMMONIA; SLIGHTLY SOL IN ETHER Source: Hazardous Substances Data Bank (HSDB)
- Vapor Pressure: 1 MM HG @ 210.9 °C Source: Hazardous Substances Data Bank (HSDB)
- Vapor Pressure: 1 [mm Hg] @210.9 °C Source: PAC Chemical Database, U.S. Department of Energy
- pH: 0.1 MOLAR SOLN: ABOUT 4.6; AQ SOLN IS NEARLY NEUTRAL TO LITMUS Source: Hazardous Substances Data Bank (HSDB)
- First Aid: INHALATION: remove to fresh air.; INGESTION: if significant amount has been ingested, get medical attention.; EYES: flush with water. (USCG, 1999) Source: CAMEO Chemicals
- Note: This chemical does not meet GHS hazard criteria for 7.5% (4 of 53) of reports. Source: European Chemicals Agency (ECHA)
- Signal: Warning Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H315 (86.8%): Causes skin irritation [Warning Skin corrosion/irritation]; H319 (88.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H335 (86.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: European Chemicals Agency (ECHA)
- ECHA C&L Notifications Summary: Aggregated GHS information provided per 53 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; Reported as not meeting GHS hazard criteria per 4 of 53 reports by companies.; There are 9 notifications provided by 49 of 53 reports by companies with hazard statement code(s).; Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website. Source: European Chemicals Agency (ECHA)
- Sources/Uses: Used in photographic chemicals and as an expectorant; [HSDB] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Photographic Processing [Category: Other] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: IN PHOTOGRAPHIC CHEMICALS Source: Hazardous Substances Data Bank (HSDB)
- Uses: MEDICATION: EXPECTORANT Source: Hazardous Substances Data Bank (HSDB)
Mapped by: Existing checksum-valid CAS to unique PubChem CID match. Retrieved: 2026-08-31. Open source record
Scientific classifications and hazard annotations provide context and do not replace the market-specific regulatory decision shown above.
Additional source coverage and match status
| Source | Result | Checked |
|---|---|---|
| NIH PubChem PUG-View | Exact match | 2026-08-31 |
A recorded no-match is useful evidence that the source was checked; it is not a claim that the substance does not exist elsewhere.
Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.