16523-31-2 Usage
Description
4,6-Diaminoresorcinol dihydrochloride is a grey-brown crystalline solid that serves as a crucial precursor in the synthesis of various polymers, including poly(p-phenylene benzobisoxazole) (PBO), poly(2,6-naphthalenebenzobisoxazole) (Naph-2,6-PBO), and poly(1,5-naphthalenebenzobisoxazole) (Naph-1,5-PBO). These polymers are known for their exceptional thermal stability, mechanical properties, and chemical resistance, making them highly valuable in various industries.
Uses
Used in Polymer Synthesis:
4,6-Diaminoresorcinol dihydrochloride is used as a precursor for the synthesis of high-performance polymers due to its ability to form strong covalent bonds with other molecules, resulting in polymers with enhanced thermal stability, mechanical properties, and chemical resistance.
Used in Aerospace Industry:
In the aerospace industry, 4,6-Diaminoresorcinol dihydrochloride is used as a precursor for the production of polymers that are utilized in the manufacturing of aircraft components, such as heat shields, engine parts, and structural elements. These polymers provide excellent resistance to high temperatures and harsh environmental conditions, ensuring the safety and durability of the aircraft.
Used in Electronics Industry:
4,6-Diaminoresorcinol dihydrochloride is used as a precursor for the synthesis of polymers in the electronics industry, where they are employed in the production of high-temperature resistant materials for electronic devices, such as circuit boards, semiconductors, and insulators. These polymers offer excellent electrical insulation properties and thermal stability, making them ideal for use in electronic applications.
Used in Automotive Industry:
In the automotive industry, 4,6-Diaminoresorcinol dihydrochloride is used as a precursor for the synthesis of polymers that are utilized in the manufacturing of engine components, exhaust systems, and other high-temperature parts. These polymers provide excellent heat resistance and mechanical strength, ensuring the reliability and longevity of automotive components.
Used in Industrial Applications:
4,6-Diaminoresorcinol dihydrochloride is used as a precursor for the synthesis of polymers in various industrial applications, such as in the production of heat-resistant materials for industrial equipment, chemical processing plants, and manufacturing facilities. These polymers offer excellent resistance to high temperatures, chemicals, and mechanical stress, making them ideal for use in demanding industrial environments.
Check Digit Verification of cas no
The CAS Registry Mumber 16523-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,5,2 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16523-31:
(7*1)+(6*6)+(5*5)+(4*2)+(3*3)+(2*3)+(1*1)=92
92 % 10 = 2
So 16523-31-2 is a valid CAS Registry Number.
InChI:InChI=1/C6H8N2O2.2ClH/c7-3-1-4(8)6(10)2-5(3)9;;/h1-2,9-10H,7-8H2;2*1H
16523-31-2Relevant articles and documents
A Safe Cost-Efficient Synthesis of 4,6-Diaminoresorcinol
Pews, R. Garth,Lysrnko, Zenon,Vosejpka, Paul C.
, p. 8255 - 8256 (1997)
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Benzo [1,2-d:5,4-d '] b (oxazole) - 2,6-di-thiol and its preparation method
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Paragraph 0013; 0024-0026, (2018/09/02)
The invention discloses benzo [1, 2-d: 5, 4-d']-di-(oxazole)-2, 6-dithiol and a preparation method thereof. The preparation method comprises the steps as follows: resorcinol is taken as a raw material, zinc chloride is taken as a catalyst, resorcinol and zinc chloride react with acetic oxide to obtain 4, 6-diacetylresorcinol; 4, 6-diacetylresorcinol reacts with hydroxylamine hydrochloride in sodium hydroxide to obtain 4, 6-di-[(1Z)-N-hydroxyethyliminumacyl]benzene-1, 3-diphenol; 4, 6-di-[(1Z)-N-hydroxyethyliminumacyl]benzene-1, 3-diphenol is taken as a raw material and subjected to Beckmann rearrangement reaction in a polyphosphoric acid system to obtain DAR*HCl; and DAR*HCl is taken as a raw material and reacts with carbon disulfide in a potassium hydroxide solution to obtain a target compound. According to the invention, sulfydryl is introduced at 2 and 6 sites simultaneously, the product is prepared through multiple steps of reaction, the method is simple, convenient and easy to operate, the melting point of the product is higher than 300 DEG C, and the yield is high.
One-pot synthesis preparation 4,6-diaminoresorcinol method of hydrochloride
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, (2016/10/08)
The invention discloses a method for preparing 4,6-diaminoresorcinol dihydrochloride through one-pot synthesis. The method mainly comprises the steps of: by taking Bronsted acid such as polyphosphoric acid, concentrated sulfuric acid or methanesulfonic acid as the catalyst and the solvent, realizing oximation, Beckmann rearrangement, hydrolysis and hydrocchlorination of 4,6-diacetylresorcinol, and thus obtaining the 4,6-diaminoresorcinol dihydrochloride (DAR.2HCl), wherein the mol ratio of hydroxylamine hydrochloride, the Bronsted acid catalyst and the 4,6-diacetylresorcinol is (2.0-2.5)/(1-10)/1, and the reaction temperature ranges from 65 to 125 DEG C. The method provided by the invention is simple in process steps and efficient in preparation; therefore, the industrialization of the 4,6-diaminoresorcinol dihydrochloride is greatly promoted.
