POTASSIUM TETRAFLUOROBORATE

PRODUCT IDENTIFICATION
CAS NO.

14075-53-7; 1303-68-0; 12692-95-4; 12712-39-9

POTASSIUM TETRAFLUOROBORATE
EINECS NO. 237-928-2
FORMULA

KBF4
MOL WT.

125.89
H.S. CODE 2826.90.9000

TOXICITY

 Rat LD50 (intraperitoneal): 240mg/kg
SYNONYMS

Potassium Fluoborate; Potassium Borofluoride; Avogadrite;

Borate(1-), tetrafluoro-, potassium; Potassium boride fluoride; Potassium fluoroborate; Kaliumtetrafluoroborat (German); Tetrafluoroborato de potasio (Spanish); Tétrafluoroborate de potassium (French);

SMILES

[B-](F)(F)(F)F.[K+]

CLASSIFICATION

Tetrafluoroborate, Hydrogen compound, Acid

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

white crystalline powder
MELTING POINT

530 (Decomposes)
BOILING POINT  
SPECIFIC GRAVITY

2.5
SOLUBILITY IN WATER  
pH  
VAPOR DENSITY  
AUTOIGNITION

 
NFPA RATINGS  

REFRACTIVE INDEX

  
FLASH POINT Not considered to be a fire hazard
STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & EXTERNAL LINKS
Fluoroboric acid is used in plating circuits; metal finishing; electropolishing of aluminium and its alloy; component of galvanic baths; organic synthesis as catalyst for alkylations and polymerisation; stabilisation of diazo salts; manufacturing of inorganic fluoroborate salts.

Inorganic fluoroborate salts are used as components of fluxing and plating, as catalysts, in flame-retardant manufacture, in metal treatment; grain refining agents; as active fillers in resin bonded abrasives; in electrolytic generation of boron, preparation of glazing frits.

Wikipedia Linking: http://en.wikipedia.org/wiki/Tetrafluoroborate

http://www.solvaychemicals.com/
Markets & Applications
Aluminium-metallurgy:
- as component in fluxing and grain refining agents
 for aluminium and magnesium
- as component in protecting salts for light metal castings
Production of abrasives:
- as active filler in reinbonded abrasives for metal treatment
Production of soldering agents:
- as component in fluxing agents for soldering and brazing

http://molecules.gnu-darwin.org/mod/Potassium-more.html
Potassium Molecules Structural Archive and Gallery

http://www.faqs.org/patents/app/20090139607
According to one aspect of the invention, a braze composition is provided that comprises an aqueous binder system, a flux composition containing multiple inorganic compounds, and titanium hydride. The multiple inorganic compounds include potassium tetrafluoroaluminate and/or potassium tetrafluoroborate, more preferably both. The flux composition may contain additional inorganic compounds that, while optional, if used can be preferably selected to have a decomposition temperature or to form an intermediate complex having a decomposition temperature that is above or below the decomposition temperatures of potassium tetrafluoroaluminate and potassium tetrafluoroborate. According to a preferred aspect of the invention, the braze composition further contains a metallic braze alloy and is in the form of a braze paste or slurry suitable for use in manufacturing, coating, repair, and build-up of superalloy components
SALES SPECIFICATION

APPEARANCE

white crystalline powder

KBF4

98.0% min

Fe2O3

0.01% max

SO4

0.02% max

SiO2

0.5% max

Cl

0.1% max

HEAVY METAL

5ppm max

WATER

0.1% max
TRANSPORTATION
PACKING

50kg in bag
HAZARD CLASS 8 (Packing group:II)
UN NO. 1759
OTHER INFORMATION

Hazard Symbols: C, Risk Phrases: 34, Safety Phrases: 26-36/37/38-45

GENERAL DESCRIPTION OF BORIC ACID
Boric acid refers to 3 compounds; orthoboric acid (also called boracic acid, H3BO3 or B2O3·3H2O), metaboric acid (HBO2 or B2O3·H2O), and tetraboric acid (also called pyroboric, H4B4O7 or B2O3·H2O). Orthoboric acid dehydrates to form metaboric acid and tetraboric acid above 170 C and 300C respectively. Orthoboric acid is derived from boric oxide in the form of white, triclinic crystals. It is poorly soluble in cold water but  dissolves readily in hot water, in alcohol and glycerine. Metaboric acid is a white, cubic crystalls. It is soluble in water slightly. Tetraboric acid is a white solid soluble in water. When tetraboric and metaboric acid are dissolved, it reverts to orthoboric acid. The main uses of boric acid is to make borate salts such as borax and other boron compounds. Boric acid is also used in heat resistant glass, in fireproofing fabrics, in electroplating baths, in leather manufacturibg, porcelain enamels and in hardening steels. Boric acid has antiseptic and antiviral activity. Aqueous solutions have been used as mouth-washes, eye-drops, skin lotions and cosmetics. Boric acid and its salts are components of many commerical insecticides and wood preservatives.