1522-22-1 Usage
Description
HEXAFLUOROACETYLACETONE, also known as 1,1,1,5,5,5-hexafluoro-2,4-pentanedione, is a clear colorless to slightly yellow liquid that acts as a chelating ligand. It forms metal-chelate complexes with various metal ions, such as Ca(II), Zn(II), Cu(II), Ni(II), Co(II), Nd(III), Rh(III), Fe(III), and Cr(III), making it useful in extracting related metal ions. Additionally, it can be used as an intermediate in the production of liquid crystals.
Uses
Used in Chemical Industry:
HEXAFLUOROACETYLACETONE is used as a chelating ligand for forming metal-chelate complexes with various metal ions, such as Ca(II), Zn(II), Cu(II), Ni(II), Co(II), Nd(III), Rh(III), Fe(III), and Cr(III), for the purpose of extracting related metal ions.
Used in Liquid Crystal Industry:
HEXAFLUOROACETYLACETONE is used as a liquid crystal intermediate, contributing to the development and production of liquid crystal materials.
References
Chattoraj, S. C., A. G. C. Jr, and R. E. Sievers. "Cadmium and zinc chelates of hexafluoroacetylacetone the gas phase reaction of a novel volatile cadmium complex with hydrogen sulphide." Journal of Inorganic & Nuclear Chemistry 28.9(1966):1937-1943.
Tomazic, Branko B., and J. W. O'Laughlin. "Synergic extraction of iron with hexafluoroacetylacetone and tributyl phosphate." Analytical Chemistry 45.8(2002):1519-1526.
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Purification Methods
It forms a dihydrate which has no UV spectrum compared with max (CHCl3) 273nm ( 7,800) for the anhydrous ketone. The dihydrate decomposes at ~90o. The hydrate (10g) plus anhydous CaSO4 (Drierite, 30g) are heated and distilled, the distillate is treated with more CaSO4 and redistilled. When the distillate is treated with aqueous NaOH and heated, the dihydrate crystallises on cooling. The Cu complex has m 135o (after sublimation). [Gilman et al. J Am Chem Soc 78 2790 1956, Belford et al. J Inorg Nucl Chem 2 11 1956, Beilstein 1 IV 3681.]
Check Digit Verification of cas no
The CAS Registry Mumber 1522-22-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,2 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1522-22:
(6*1)+(5*5)+(4*2)+(3*2)+(2*2)+(1*2)=51
51 % 10 = 1
So 1522-22-1 is a valid CAS Registry Number.
InChI:InChI=1/C5H2F6O2/c6-1-2(12)4(7,8)3(13)5(9,10)11/h1H2
1522-22-1Relevant articles and documents
Method for Producing 1,1,1,5,5,5-Hexafluoroacetylacetone
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Paragraph 0124-0129, (2016/04/09)
A production method of a 1,1,1,5,5,5-hexafluoroacetylacetone hydrate according to the present invention includes: step 1: step 1: obtaining a reaction mixture that contains at least 1,1,1,5,5,5-hexafluoro-3-pentyn-2-one or an equivalent thereof by reaction of a 3,3,3-trifluoropropynyl metal with a trifluoroacetate; and step 2: forming the 1,1,1,5,5,5-hexafluoroacetylacetone hydrate by contact of the reaction mixture obtained in the step 1 with water in the presence of an acid. It is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone by dehydration of the thus-formed hydrate. Thus, the production method according to the present invention is industrially applicable.
METHOD FOR PRODUCING 1,1,1,5,5,5-HEXAFLUOROACETYLACETONE
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Paragraph 0150-0181, (2016/10/24)
A production method of a 1,1,1,5,5,5-hexafluoroacetylacetone hydrate according to the present invention includes: step 1: step 1: obtaining a reaction mixture that contains at least 1,1,1,5,5,5-hexafluoro-3-pentyn-2-one or an equivalent thereof by reaction of a 3,3,3-trifluoropropynyl metal with a trifluoroacetate; and step 2: forming the 1,1,1,5,5,5-hexafluoroacetylacetone hydrate by contact of the reaction mixture obtained in the step 1 with water in the presence of an acid. It is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone by dehydration of the thus-formed hydrate. Thus, the production method according to the present invention is industrially applicable.
Process for purifying 1,1,1,5,5,5-hexafluoroacetylacetone
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Page column 5, (2008/06/13)
The invention relates to a process for purifying a crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate containing an impurity. The process includes bringing the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate into contact with a poor solvent in which 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate is substantially insoluble, thereby removing the impurity from the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate. Alternatively, the process includes precipitating crystals of 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate from a solution of the crude 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate. Thus, it is possible to produce 1,1,1,5,5,5-hexafluoroacetylacetone dihydrate of high purity. This product makes it easy to produce 1,1,1,5,5,5-hexafluoroacetylacetone of high purity.