Tetrafluoroboric acid

Base Information

• Chemical Name: Tetrafluoroboric acid
• CAS No.: 16872-11-0
• Deprecated CAS: 102931-96-4,122141-73-5,127408-00-8,1303-67-9,133097-00-4,133951-38-9,13767-36-7,140148-87-4,172515-29-6,172908-18-8,183135-74-2,191665-41-5,36835-64-0,65814-43-9,67116-13-6,72802-72-3,74618-51-2,81586-24-5,96958-96-2,350009-05-1,496925-14-5,547767-06-6,900178-90-7,1056477-09-8,1178564-64-1,1262801-47-7,1414852-51-9,845825-70-9,1631149-30-8,1056477-09-8,1178564-64-1,122141-73-5,1262801-47-7,127408-00-8,1303-67-9,133097-00-4,133951-38-9,13767-36-7,140148-87-4,1414852-51-9,172515-29-6,172908-18-8,191665-41-5,350009-05-1,36835-64-0,496925-14-5,547767-06-6,65814-43-9,67116-13-6,72802-72-3,74618-51-2,81586-24-5,845825-70-9,900178-90-7,96958-96-2
• Molecular Formula: HBF4
• Molecular Weight: 87.81
• Hs Code.: 28111990
• European Community (EC) Number: 240-898-3
• ICSC Number: 1040
• UN Number: 1775
• UNII: H429WZ9FBQ
• DSSTox Substance ID: DTXSID8029739
• Wikipedia: Fluoroboric_acid
• Wikidata: Q412333
• ChEMBL ID: CHEMBL3186904
• Mol file: 16872-11-0.mol

Synonyms:fluoboric acid;fluoboric acid (HBF4);fluoroboric acid;tetrafluoroborate anion;tetrafluoroborate ion;tetrafluoroboric acid

Chemical Property of Tetrafluoroboric acid

Chemical Property:

• Appearance/Colour: colourless liquid
• Vapor Pressure: 39100mmHg at 25°C
• Melting Point: -90 °C
• Refractive Index: nD20 of a 20% aq soln 1.3284
• Boiling Point: 130 °C (dec.)
• PKA: -4.9[at 20 ℃]
• Flash Point: -40 °F
• PSA: 0.00000
• Density: 1.38 g/cm³
• LogP: 1.41250
• Water Solubility.: MISCIBLE
• Hydrogen Bond Donor Count: 1
• Hydrogen Bond Acceptor Count: 5
• Rotatable Bond Count: 0
• Exact Mass: 88.0107428
• Heavy Atom Count: 5
• Complexity: 19.1
• Transport DOT Label: Corrosive

Purity/Quality:

99% ^*data from raw suppliers

HydrogenTetrafluoroborate(1-)(48%solutioninH2O) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): C
• Hazard Codes: C
• Statements: 34
• Safety Statements: 26-36/37/39-45-37-27

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Toxic Gases & Vapors -> Acids, Inorganic
• Canonical SMILES: [H+].[B-](F)(F)(F)F
• Inhalation Risk: No indication can be given about the rate at which a harmful concentration of this substance in the air is reached when dispersed.
• Effects of Short Term Exposure: Corrosive. Inhalation may cause severe swelling of the throat. This may result in asphyxia. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Exposure at high levels could cause severe lung damage. Medical observation is indicated.
• Uses: Used as acetaldehyde synthesis catalysts, the metal surface cleaning agents, lead electrolytic polishing agents, the diazonium salt stabilizer, etc. Used as Diazonium salts stabilizer, but also for electrolysis industry, etc. Used for cleaning metal surface oxide, silicate film and as a corrosive, for cleaning before aluminum and alloy electroplating. 2.5% solution is for electrolytic polishing of pure aluminum and used as rewashing lotion for removing flux and electroplating parts from the metal substrate, as a catalyst for alkylation and polymerization, preservatives, chemical reagents, as well as the starting materials for preparing various fluoborates. Used to clean metal and alloy surfaces prior to plating. Used for preparing stabilized diazonium salts, manufacturing acetal catalyzed, used as an agent for determination of sodium in the presence of potassium ions and magnesium ions, a catalyst in organic synthesis, but also used for the sponge titanium and its alloys-dissolution and the printed wiring board industry. Tetrafluoroboric acid is used in conjunction with various methods of cleaning and treat the surface of substrates. It is used as radiotracers. As catalyst for preparing acetals, esterifying cellulose; to clean metal surfaces before welding; to brighten aluminum; as a solute in electrolytes for plating metals such as chromium, iron, nickel, copper, silver, zinc, cadmium, indium, tin, and lead (has a high throwing power). Reagent for sodium in the presence of magnesium and potassium ions; for making stabilized diazo salts (diazonium and tetrazonium fluoborates). An 0.1 to 0.5% solution retards fermentation: Homeyer, Pharm. Ztg. 34, 761 (1889).
• Production method: Hydrofluoric acid method is according to the theoretical amount of hydrofluoric acid and boric acid ingredients, slowly adding boric acid to hydrofluoric acid under stirring, the reaction temperature was controlled below 40 ℃, stop mechanical stirring upon heating completed, placed at room temperature for more than 2h, then filtered and purified to obtain fluoroborate finished production. 4HF + H3BO3 → HBF3OH + HF + 2H2O HBF3OH + HF → HBF4 + H2O