Substance profile
Potassium bifluoride
Potassium bifluoride appears as colorless crystals, corrosive to tissues, etches glass.
01 · Identification
What Potassium bifluoride is
Potassium bifluoride appears as colorless crystals, corrosive to tissues, etches glass. Its molecular formula is F2HK and its molecular weight is 78.103 g/mol.
Under the GHS it carries the signal word Danger. It is classed as corrosives.
02 · Identifiers
Potassium bifluoride identifiers and molecular data
Potassium bifluoride CAS number and EC number
Potassium bifluoride molecular formula and molecular weight
Other names for Potassium bifluoride
- potassium hydrogen difluoride
03 · GHS classification
Potassium bifluoride hazard classification
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
Potassium bifluoride pictograms and signal word
Potassium bifluoride hazard class and category
| Hazard class | Category | From code | Pictogram |
|---|---|---|---|
| Acute toxicity - oral GHS chapter 3.1 | Category 3 | H301 | GHS06 |
| Skin corrosion/irritation GHS chapter 3.2 | Category 1A or 1B or 1C | H314 | GHS05 |
Where two values are shown with “or”, the hazard statement is shared by more than one category or by more than one class, and the code alone does not say which. H272, for example, belongs to oxidising liquids and to oxidising solids — the physical state decides. The binding answer for a specific entry is in the CLP Annex VI table itself.
Potassium bifluoride hazard statements (H-codes)
| Code | Hazard statement |
|---|---|
| H301 | Toxic if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
This page lists only the codes assigned to Potassium bifluoride. The full reference lives on the hazard statements hub, the precautionary statements hub and the GHS pictograms hub.
Safety Data Sheet
Getting an SDS for Potassium bifluoride
A Safety Data Sheet is written for a product, not for a substance: the supplier of the grade you actually buy issues it, so two suppliers of Potassium bifluoride issue two different sheets. That is why there is no single authoritative SDS for a substance to download — what there is, is the job of collecting the sheets for the products you hold and keeping them current as suppliers revise them.
04 · Precautionary statements
Potassium bifluoride precautionary statements
CLP Annex VI assigns 7 precautionary statements to Potassium bifluoride. They are grouped the way a label groups them: what to do before handling, what to do when something has already happened, how to store it and how to dispose of it.
Prevention
What to do before and during handling so the hazard never happens.
Response
What to do once exposure, spillage or fire has already happened.
Reading the notation. … is a blank the supplier fills in — not a truncated sentence.· [square brackets] mark a part printed only when it applies.
05 · Names in the regulation
Potassium bifluoride name in 23 EU languages
CLP Annex VI Part 3 is published in every language edition of the regulation, and the identification column is written out in each of them. Nothing below is translated by us: each line is the name as that edition prints it. Under Art. 18(2) the substance name from Annex VI is a lawful product identifier, so this is the wording to put on a label going to that market — and where the cell lists several designations, any one of them qualifies.
| Language | Name in CLP Annex VI Part 3 |
|---|---|
| Bulgarian български | калиев бифлуорид калиев хидрогендифлуорид |
| Spanish español | Bifluoruro de potasio difluoruro de hidrógeno y potasio |
| Czech čeština | hydrogendifluorid draselný |
| Danish dansk | kaliumbiflourid kaliumhydrogenfluorid |
| German Deutsch | Kaliumbifluorid Kaliumhydrogendifluorid |
| Estonian eesti | kaaliumvesinikfluoriid kaaliumvesinikdifluoriid |
| Greek ελληνικά | διφθοριούχο κάλιο όξινο διφθοριούχο κάλιο |
| English English | potassium bifluoride potassium hydrogen difluoride |
| French français | bifluorure de potassium hydrogénodifluorure de potassium |
| Croatian hrvatski | kalijev bifluorid kalijev vodikov difluorid |
| Italian italiano | bifluoruro di potassio potassio bifluoruro |
| Latvian latviešu | kālija bifluorīds kālija hidrogēndifluorīds |
| Lithuanian lietuvių | kalio bifluoridas kalio vandenilio difluoridas |
| Hungarian magyar | kálium-bifluorid kálium-hidrogén-difluorid |
| Maltese Malti | bifluworur tal-potassju difluworur tal-idroġenu tal-potassju |
| Dutch Nederlands | natriumbifluoride kaliumwaterstofdifluoride |
| Polish polski | fluorek potasu-fluorowodór(1/1) wodorofluorek potasukwaśny fluorek potasu |
| Portuguese português | bifluoreto de potássio hidrogenodifluoreto de potássio |
| Romanian română | difluorură de potasiu difluorură acidă de potasiu |
| Slovak slovenčina | difluorid monodraselný hydrogendifluorid draselný |
| Slovenian slovenščina | kalijev bifluorid kalijev hidrogen difluorid |
| Finnish suomi | kaliumbifluoridi kaliumvetydifluoridi |
| Swedish svenska | kaliumbifluorid kaliumvätedifluorid |
All 23 language editions of Annex VI carry this entry. Irish is the twenty-fourth official EU language and has no line here for a different reason: no consolidated CLP text has ever been published in Irish, so there is no Irish edition of Annex VI to quote a name from. Source: consolidated CLP, CELEX 02008R1272, language editions. © European Union, https://eur-lex.europa.eu — only the electronic Official Journal of the European Union is authentic.
06 · Label elements
Potassium bifluoride GHS label elements
Everything CLP Annex VI fixes for Potassium bifluoride, laid out the way it appears on a label. The greyed lines are the parts only the supplier can fill in.
Danger
Potassium bifluoride
- Toxic if swallowed.
- Causes severe skin burns and eye damage.
- Do not breathe dust/fume/gas/mist/vapours/spray.
- Do not eat, drink or smoke when using this product.
- Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…
- IF SWALLOWED:
- Immediately call a POISON CENTER/doctor/…
- Rinse mouth.
- Do NOT induce vomiting.
Supplier name, address and telephone number· Product identifier·Nominal quantity
Need this as an actual label? Open Potassium bifluoride in the GHS label constructor →
07 · Health hazards
Potassium bifluoride health hazards and exposure limits
Potassium bifluoride hazard summary
Poisonous and corrosive to skin; [Merck Index] Corrosive to tissue; [CAMEO] Highly corrosive to skin, eyes, and mucous membranes; Inhalation can cause corrosive effects on the upper respiratory tract and lungs; Toxic by ingestion; [Alfa Aesar MSDS] See FLUORIDES.
Source: Haz-Map, Information on Hazardous Chemicals and Occupational Diseases
Potassium bifluoride occupational exposure limits
| Limit | Value | Source |
|---|---|---|
| PEL | 2.5 [mg/m3], as F | Haz-Map, Information on Hazardous Chemicals and Occupational Diseases |
These are United States values. The European Union sets its own indicative and binding limits, and the figure that applies at a given workplace is the one in the local regulation — not the one shown here.
08 · Handling and storage
Potassium bifluoride storage and handling
Potassium bifluoride reactivity
Acidic salts, such as POTASSIUM BIFLUORIDE, are generally soluble in water. The resulting solutions contain moderate concentrations of hydrogen ions and have pH's of less than 7.0. They react as acids to neutralize bases. These neutralizations generate heat, but less or far less than is generated by neutralization of inorganic acids, inorganic oxoacids, and carboxylic acid. They usually do not react as either oxidizing agents or reducing agents but such behavior is not impossible.
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check Potassium bifluoride in the storage compatibility matrix →
09 · Questions
Potassium bifluoride — frequently asked questions
What is the CAS number of Potassium bifluoride?
The CAS number of Potassium bifluoride is 7789-29-9. Its EC number is 232-156-2.
What is the chemical formula of Potassium bifluoride?
The molecular formula of Potassium bifluoride is F2HK and its molecular weight is 78.103 g/mol.
What does a Potassium bifluoride label have to show?
Under CLP Annex VI the label for Potassium bifluoride carries the pictograms Skull and crossbones and Corrosion and the signal word is Danger.
Is Potassium bifluoride flammable?
CLP Annex VI assigns Potassium bifluoride no flammability hazard class. That is not a statement that it cannot burn: the harmonised list only records the hazards that were assessed for it.
Is Potassium bifluoride a carcinogen?
CLP Annex VI records no harmonised carcinogenicity classification for Potassium bifluoride. Annex VI is a list of agreed classifications, not a list of substances found safe, so this is an absence of a classification rather than a clean bill of health.
What is the exposure limit for Potassium bifluoride?
The US occupational exposure limit reported for Potassium bifluoride is 2.5 [mg/m3], as F (Haz-Map, Information on Hazardous Chemicals and Occupational Diseases). Limits differ by country: the EU sets its own indicative and binding values, and the figure that applies at a given workplace is the one in the local regulation.
Nearby
Substances next to Potassium bifluoride
Keep going: substances starting with P, or search the whole database by name, CAS number, pictogram or signal word.