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Potassium tetrafluoroborate

Chemical Properties Application Preparative Methods
Potassium tetrafluoroborate
Potassium tetrafluoroborate
CAS No.
14075-53-7
Chemical Name:
Potassium tetrafluoroborate
Synonyms
KBF4;Avogadrite;POTASSIUM FLUOBORATE;Potassium fluorobora;PotassiuM fluoroborat;POTASSIUM BOROFLUORIDE;boronpotassiumfluoride;POTASSIUM FLUOROBORATE;POTASSIUM BOROFULUORIDE;potassiumboridefluoride
CBNumber:
CB3143588
Molecular Formula:
BF4K
Formula Weight:
125.9
MOL File:
14075-53-7.mol

Potassium tetrafluoroborate Properties

Melting point:
530 °C(lit.)
Density 
2.505 g/mL at 25 °C(lit.)
refractive index 
1.3245
form 
Micro-Crystalline Powder
color 
White to light gray
Water Solubility 
4.4 g/L (20 ºC)
Sensitive 
Moisture Sensitive
Merck 
14,7686
Stability:
Stable. May decompose on exposure to water or moisture. Incompatible with metals.
CAS DataBase Reference
14075-53-7(CAS DataBase Reference)
NIST Chemistry Reference
Potassium tetrafluoroborate(14075-53-7)
EPA Substance Registry System
Borate(1-), tetrafluoro-, potassium(14075-53-7)
SAFETY
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi,C
Risk Statements  36/37/38-34
Safety Statements  37/39-26-45-36/37/39-24/25
RIDADR  3260
WGK Germany  1
RTECS  ED2800000
Hazard Note  Corrosive/Moisture Sensitive
TSCA  Yes
Symbol(GHS):
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Potassium tetrafluoroborate price More Price(9)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 278955 Potassium tetrafluoroborate 96% 14075-53-7 500g $49 2017-11-08 Buy
Sigma-Aldrich 455903 Potassium tetrafluoroborate ≥99.99% trace metals basis 14075-53-7 25g $127 2017-11-08 Buy
Alfa Aesar 11556 Potassium tetrafluoroborate, 99% min, typically >99.5% 14075-53-7 2kg $159 2017-11-08 Buy
Alfa Aesar 11556 Potassium tetrafluoroborate, 99% min, typically >99.5% 14075-53-7 500g $47.2 2017-11-08 Buy
Strem Chemicals 93-1951 Potassium tetrafluoroborate 14075-53-7 500g $51 2017-11-27 Buy

Potassium tetrafluoroborate Chemical Properties,Uses,Production

Chemical Properties

It appears as white powder or gelatinous crystals. It has hygroscopicity with bitter taste. It is slightly soluble in water and hot ethanol, insoluble in cold ethanol.

Application

Preparative Methods

Fluoroboric acid-potassium hydroxide method:
Hydrofluoric acid and boric acid are sent into the reactor at a ratio of 25: 6.2 (weight ratio); the temperature does not exceed 40 ℃. The reaction continues for 6h. The prepared fluoroboric acid is fed to a neutralization tank and neutralized with a 5 mol/L potassium hydroxide under stirring and cooling (until the methyl orange is discolored). Precipitated potassium fluoroborate crystal is subject to centrifugal separation, washing and drying, obtaining the finished product of potassium fluoroborate. its
4HF + H3BO3 → HBF4 + 3H2O
HBF4 + KOH → KBF4 + H2O
Fluoroboric acid/potassium carbonate neutralization method: under the stirring of the coating container, apply the saturated potassium carbonate solution for neutralizing fluoroboric acid to until the methyl orange is discolored. The precipitated potassium fluoroborate is subject to centrifugal separation, washing and drying, obtaining the finished product of potassium fluoroborate. Its reaction is:
2HBF4 + K2CO3 → 2KBF4 + H2O + CO2 ↑

Chemical Properties

white odourlesss crystalline powder

Uses

Has been proposed as a flux for soldering and brazing; filler in resin-bonded grinding wheels.

Purification Methods

Crystallise it from H2O (solubility% (temperature): 0.3 (3o), 0.45 (20o), 1.4 (40o), 6.27 (100o), and dry it under vacuum. It is a non-hygroscopic salt. A 10% solution is transparent blue at 100o, green at 90o and yellow at 60o. [V.rlander et al. Chem Ber 65 535 1932, Kwasnik in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 223 1963.]

Potassium tetrafluoroborate Preparation Products And Raw materials

Raw materials

Preparation Products


Potassium tetrafluoroborate Suppliers

Global( 240)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
inquiry@dakenchem.com CHINA 22128 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20795 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32764 55
Hefei TNJ Chemical Industry Co.,Ltd.
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86-0551-65418684 info@tnjchem.com China 1428 55
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933 jkinfo@jkchemical.com;market6@jkchemical.com China 96815 76
Meryer (Shanghai) Chemical Technology Co., Ltd. +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
+86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) sh@meryer.com China 40399 62
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 saleschina@alfa-asia.com China 30308 84
Energy Chemical 021-58432009 / 400-005-6266
021-58436166-800 info@energy-chemical.com China 44192 61
Shanghai Mintchem Development Co., Ltd 021 6845 0923
0086 20 8234 8082 fluorine@tatichem.com China 38 68
Shanghai Science Bio-Pharmaceutical Co. Ltd. 021-57872719,13918702962/13482412995
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