CAS 12125-01-8PubChem CID 25516
Ammonium fluoride
Ammonium fluoride is a fluoride salt having ammonium (NH4+) as the counterion. It is a fluoride salt and an ammonium salt. — ChEBI
- IUPAC name
- azanium fluoride
- Molecular formula
- FH4N
- Molecular weight
- 37.037 g/mol
- Exact mass
- 37.032777294 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 fluoride ((NH4)F)Fluoruro amonicoAmmonium fluorureNeutral ammonium fluorideFluorure d'ammoniumFluorek amonowy4QT928IM0ACHEBI:66871
16 more reported names
RefChem:5548235-185-9NH4Fazanium;fluorideammonium monofluorideFluorek amonowy [Polish]Ammonium fluorure [French]Fluoruro amonico [Spanish]Fluorure d'ammonium [French]CCRIS 2285HSDB 6287EINECS 235-185-9UN2505UNII-4QT928IM0Aammonia hydrofluorideEC 235-185-9
External database identifiers
- ChEBI:CHEBI:66871
- EPA DTXSID:DTXSID6050463
Evidence from additional scientific databases
NIH PubChem PUG-View
Exact identifier match25516
Attributed physical-property, hazard, environmental and use annotations.
- Boiling Point: 212 °F at 760 mmHg (USCG, 1999) Source: CAMEO Chemicals
- Color/Form: Deliquescent leaflets or needles; hexagonal prisms by sublimation; occurs commercially as a granular powder Source: Hazardous Substances Data Bank (HSDB)
- Color/Form: White hexagonal crystals Source: Hazardous Substances Data Bank (HSDB)
- Density: 1.32 at 77 °F (USCG, 1999) - Denser than water; will sink Source: CAMEO Chemicals
- Density: 1.015 Source: Hazardous Substances Data Bank (HSDB)
- Density: 1.01 g/cm³ Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Density: 1.00925 @25 °C Source: PAC Chemical Database, U.S. Department of Energy
- Melting Point: 238 °C Source: Hazardous Substances Data Bank (HSDB)
- Melting Point: sublimes Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Melting Point: 126 °C Source: PAC Chemical Database, U.S. Department of Energy
- Odor: Odorless Source: Hazardous Substances Data Bank (HSDB)
- Physical Description: Ammonium fluoride is a white crystalline solid. It is soluble in water. It is noncombustible. It is corrosive to aluminum. It is used in chemical analysis, in brewing, and as a preservative for wood. Source: CAMEO Chemicals
- Physical Description: Liquid; Dry Powder; Large Crystals; CBI Source: EPA Chemical Data Reporting (CDR)
- Physical Description: Colorless or white solid; [ICSC] Deliquescent; [Merck Index] White crystalline solid with an ammonia-like odor; [MSDSonline] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Physical Description: COLOURLESS CRYSTALS OR WHITE POWDER. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- Solubility: 83.5 g/100 g water at 25 °C Source: Hazardous Substances Data Bank (HSDB)
- Solubility: 100 g/100 mL of water at 0 °C Source: Hazardous Substances Data Bank (HSDB)
- Solubility: 82.780 lb/100 lb of water at 70 °F Source: Hazardous Substances Data Bank (HSDB)
- Solubility: 45.3 g/100 g water at 25 °C Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Slightly soluble in alcohol Source: Hazardous Substances Data Bank (HSDB)
- Solubility: Solubility in water, g/100ml at 25 °C: 45.3 Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- pH: The aqueous solution is acidic. Source: Hazardous Substances Data Bank (HSDB)
- Exposure Routes: The substance can be absorbed into the body by inhalation of its aerosol and by ingestion. Source: ILO-WHO International Chemical Safety Cards (ICSCs)
- First Aid: Begin first aid as quickly as possible.; INHALATION: remove to fresh air.; INGESTION: perform gastric lavage with limewater or 1% calcium chloride solution; support respiration; call a physician.; EYES: flush with water for 15 min.; consult physician.; SKIN: shower immediately with large quantities of water; remove all contaminated clothing in the shower at once; consult physician. (USCG, 1999) Source: CAMEO Chemicals
- ERG2024, Guide 154 (Ammonium fluoride): General First Aid:; · Call 911 or emergency medical service.; · Ensure that medical personnel are aware of the material(s) involved, take precautions to protect themselves and avoid contamination.; · Move victim to fresh air if it can be done safely.; · Administer oxygen if breathing is difficult.; · If victim is not breathing:; -- DO NOT perform mouth-to-mouth resuscitation; the victim may have ingested or inhaled the substance.; -- If equipped and pulse detected, wash face and mouth, then give artificial respiration using a proper respiratory medical device (bag-valve mask, pocket mask equipped with a one-way valve or other device).; -- If no pulse detected or no respiratory medical device available, provide continuous compressions. Conduct a pulse check every two minutes or monitor for any signs of spontaneous respirations.; · Remove and isolate contaminated clothing and shoes.; · For minor skin contact, avoid spreading material on unaffected skin.; · In case of contact with substance, remove immediately by flushing skin or eyes with running water for at least 20 minutes.; · For severe burns, immediate medical attention is required.; · Effects of exposure (inhalation, ingestion, Source: Emergency Response Guidebook (ERG)
- Signal: Danger Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
- GHS Hazard Statements: H301: Toxic if swallowed [Danger Acute toxicity, oral]; H311: Toxic in contact with skin [Danger Acute toxicity, dermal]; H331: Toxic if inhaled [Danger Acute toxicity, inhalation] Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
- Precautionary Statement Codes: P261, P262, P264, P270, P271, P280, P301+P316, P302+P352, P304+P340, P316, P321, P330, P361+P364, P403+P233, P405, and P501 (click each P-code to see the statement) Source: Regulation (EC) No 1272/2008 of the European Parliament and of the Council
- Signal: Danger Source: European Chemicals Agency (ECHA)
- GHS Hazard Statements: H301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]; H311 (98.7%): Toxic in contact with skin [Danger Acute toxicity, dermal]; H314 (14.7%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]; H318 (16.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]; H331 (99.9%): Toxic if inhaled [Danger Acute toxicity, inhalation] Source: European Chemicals Agency (ECHA)
- Precautionary Statement Codes: P260, P261, P262, P264, P264+P265, P270, P271, P280, P301+P316, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P361+P364, P363, 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 3035 reports by companies from 19 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.; 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)
- Signal: Danger Source: NITE-CMC
- GHS Hazard Statements: H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation]; H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure] Source: NITE-CMC
- Precautionary Statement Codes: P260, P264, P264+P265, P270, P280, P305+P351+P338, P319, P337+P317, and P501 (click each P-code to see the statement) Source: NITE-CMC
- Signal: Warning Source: NITE-CMC
- GHS Hazard Statements: H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]; H373: May causes damage to organs through prolonged or repeated exposure [Warning Specific target organ toxicity, repeated exposure] Source: NITE-CMC
- NFPA Health Rating: 3 - Materials that, under emergency conditions, can cause serious or permanent injury. Source: Hazardous Substances Data Bank (HSDB)
- NFPA Fire Rating: 0 - Materials that will not burn under typical fire conditions, including intrinsically noncombustible materials such as concrete, stone, and sand. Source: Hazardous Substances Data Bank (HSDB)
- NFPA Instability Rating: 0 - Materials that in themselves are normally stable, even under fire conditions. Source: Hazardous Substances Data Bank (HSDB)
- Consumer Uses: Plating agent; Etching agent Source: EPA Chemical Data Reporting (CDR)
- Industry Uses: Semiconductor and photovoltaic agent; Processing aids not otherwise specified; Plating agent; Other; Intermediate; Etching agent; Surface modifier; Cleaning agent Source: EPA Chemical Data Reporting (CDR)
- Sources/Uses: Used in etching and frosting glass; as antiseptic in brewing beer; for preserving wood; in printing and dyeing textiles; and as mothproofing agent; [HSDB] Used as a wet etchant in semiconductor manufacturing at a standard concentration of 40%; [CSH, p. 46] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Industrial Processes with risk of exposure: Semiconductor Manufacturing [Category: Industry]; Applying Wood Preservatives [Category: Other]; Using Disinfectants or Biocides [Category: Clean]; Textiles (Printing, Dyeing, or Finishing) [Category: Industry]; Glass Manufacturing [Category: Industry] Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
- Uses: Etching and frosting glass, as antiseptic in brewing beer; preserving wood; in printing and dyeing textiles; as mothproofing agent Source: Hazardous Substances Data Bank (HSDB)
- Uses: Fluorides; analytical chemistry Source: Hazardous Substances Data Bank (HSDB)
- Uses: Ammonium fluoride is available principally as a laboratory reagent. If it is needed in large quantities, one mole of aqueous ammonia can be mixed with one mole of the more readily available ammonium bifluoride. 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 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.