81-41-4 Usage
Description
1,4-Diamino-2,3-dicyano-9,10-anthraquinone is an organic compound that serves as a key intermediate in the synthesis of various dyes and pigments. It is characterized by its anthraquinone core structure, with two amino groups at the 1,4 positions and two cyano groups at the 2,3 positions. This unique molecular structure endows it with specific chemical properties that make it suitable for use in the dye industry.
Uses
Used in Textile Industry:
1,4-Diamino-2,3-dicyano-9,10-anthraquinone is used as a key intermediate for manufacturing CI Disperse Blue 60, a widely used dye in the textile industry. This dye is known for its excellent color strength, lightfastness, and washfastness properties, making it ideal for coloring synthetic fibers such as polyester, nylon, and acrylic.
Used in Plastics and Polymer Industry:
In the plastics and polymer industry, 1,4-diamino-2,3-dicyano-9,10-anthraquinone is used as a precursor for the synthesis of pigments and dyes that impart color to various types of plastics and polymers. These pigments and dyes are valued for their stability, resistance to heat and light, and ability to provide vibrant colors to the final products.
Used in Ink Industry:
1,4-Diamino-2,3-dicyano-9,10-anthraquinone is also utilized in the ink industry as a starting material for the production of high-performance dyes used in ink formulations. These dyes are known for their excellent color yield, resistance to fading, and compatibility with various printing processes, making them suitable for use in digital, offset, and screen printing applications.
Used in Paint Industry:
In the paint industry, 1,4-diamino-2,3-dicyano-9,10-anthraquinone is employed as a precursor for the synthesis of pigments that provide color to various types of paints and coatings. These pigments are valued for their durability, resistance to weathering, and ability to maintain their color over time, making them ideal for use in architectural, automotive, and industrial coatings.
Check Digit Verification of cas no
The CAS Registry Mumber 81-41-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81-41:
(4*8)+(3*1)+(2*4)+(1*1)=44
44 % 10 = 4
So 81-41-4 is a valid CAS Registry Number.
InChI:InChI=1/C16H8N4O2/c17-5-9-10(6-18)14(20)12-11(13(9)19)15(21)7-3-1-2-4-8(7)16(12)22/h1-4H,19-20H2
81-41-4Relevant articles and documents
Preparation method of 1,4-diamido-2,3-dicyano anthraquinone
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Paragraph 0042; 0043, (2016/11/24)
The invention relates to a preparation method of 1,4-diamido-2,3-dicyano anthraquinone. The preparation method comprises steps as follows: 1,4-diamido-2,3-dichloroanthraquinone is taken as a raw material and is heated to reflux with a high-boiling-point polar solvent as a reaction medium and formamide as a cyanation reagent in the presence of a phase transfer catalyst, a dehydrating agent and an acid-binding agent, a product is cooled, filtered, washed with water and dried, and 1,4-diamido-2,3-dicyano anthraquinone is prepared. The technical scheme has the characteristics of low environmental toxicity, low environmental protection pressure and simplicity in technological operation; the prepared 1,4-diamido-2,3-dicyano anthraquinone reaches the same level of the prior art when used for preparing disperse turquoise blue S-GL.
Preparation of 1,4-diamino-2,3-dicyanoanthraquinone
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, (2008/06/13)
1,4-Diaminoanthraquinone-2-sulfonic acid or salts thereof are reacted with cyanide ions at pH 8-11 in the presence of oxidizing agents in a mixture of water and 1-methoxy-2-propanol, 2-methoxy-1-propanol, N,N-dimethylformamide, N,N-dimethylacetamide, N,N-dimethylpropionamide, dimethyl sulfoxide, dioxane, N-methylpyrrolidone or mixtures thereof, the ratio water: organic liquid being ≥3:1, the reaction proceeding at higher concentrations than in a purely aqueous medium and producing appreciably purer products in a high space-time yield.
Process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinones
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, (2008/06/13)
There is disclosed a process for the preparation of 1,4-diamino-2,3-dicyanoanthraquinones by reacting compounds of formula STR1 wherein X1 and X2 are hydroxyl, halogen, acetate or sulfato ester, or, when taken together, are an oxygen atom attached by a double bond to the boron atom, R is a substituent and n is 0, 1 or 2, with an inorganic cyanide in a polar aprotic solvent and in the presence of an oxidizing agent, and subsequently hydrolyzing the reaction product.