82-22-4 Usage
Description
1,1'-DIANTHRIMIDE is an organic compound that exhibits unique chemical properties and is utilized in various analytical applications. It is known for its ability to form a color-changing complex with certain elements, which makes it a valuable tool in the detection and quantification of these elements.
Uses
Used in Analytical Chemistry:
1,1'-DIANTHRIMIDE is used as a reagent for the determination of boron. It forms a 0.02% solution in Concentrated H2SO4, which turns blue upon the addition of boron. This color change is indicative of the presence of boron, and the blue solution has an absorption maximum at 620 nm, allowing for the quantification of boron through spectrophotometric methods.
Additionally, 1,1'-DIANTHRIMIDE is used in the determination of silicon. Its ability to form complexes with specific elements makes it a versatile reagent in the field of analytical chemistry, particularly for the detection and measurement of trace amounts of boron and silicon in various samples.
Purification Methods
Crystallise anthrimide from chlorobenzene (red needles) or nitrobenzene (red rhombs). It is poorly soluble in organic solvents. [Eckert & Steiner Monatsh Chem 35 1129 1914.]
Check Digit Verification of cas no
The CAS Registry Mumber 82-22-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 2 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 82-22:
(4*8)+(3*2)+(2*2)+(1*2)=44
44 % 10 = 4
So 82-22-4 is a valid CAS Registry Number.
82-22-4Relevant articles and documents
Preparation of anthraquinone imide compounds
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, (2008/06/13)
The preparation of anthraquinone imide compounds by condensation of anthraquinone compounds containing at least one primary amino group with halogenized aromatics or by condensation of halogenized anthraquinone compounds with primary aromatic amines, in the presence of a vat-dyeing catalyst and an acid-binding agent in an organic solvent, in which the organic solvent used is an alkyl benzoate.
Process for the preparation of anthraquinoid intermediates and vat dyes
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, (2008/06/13)
A novel process for the preparation of anthraquinoid intermediates and vat dyes by alkali fusion of suitable precursors in the presence of alcohol. The process comprises starting from benzanthrone, pyrazolanthrone or anthraquinone derivatives and carrying out the reaction in a machine with kneading action and in the presence of an alkali metal hydroxide and an aliphatic alcohol with a boiling point below 120° C., at elevated temperature, to effect dimerization or cyclization, the weight ratio of alkali metal hydroxide to benzanthrone, pyrazolanthrone or anthraquinone derivative being 1:1. The process makes it possible to prepare in good quality anthraquinoid intermediate which can be further processed to dyes, as well as vat dyes which are suitable for dyeing or printing cellulosic material.
