32687-78-8 Usage
Handing and Safety
FDA approve antioxidant 1024 usage in packaging polymers, resins, and adhesives intended for food contact applications. It is approved in many countries for food contact applications.
Description
FDA approve antioxidant 1024 usage in packaging polymers, resins, and adhesives intended for food contact applications. It is approved in many countries for food contact applications.
Uses
Antioxidant 1024 is used in conjunction with phenolic antioxidants, phosphites/phosphonites, thio-synergists and other co-additives.
Application
Most suited for PA, PE, rubbers and PP applications. More efficient if it is added to the polymeric substance used in insulated electric wire and cable. Also it’s perfect melting nature makes it easily to mix with and into the substance mentioned above and other polymeric substance system without any dispersing problem.
Flammability and Explosibility
Notclassified
Synthesis
1. Synthesis steps of β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide(1) Dissolve 54 g of hydrazine hydrate in 600 mL of a mixed solution of methanol and ethanol (V methanol: V ethanol = 1:2), then transfer to a dry three-necked flask, and then add 76 g of β-(3, 5-di-tert-butyl-4-hydroxyphenyl) methyl propionate, the three-necked flask is fixed on the iron stand, the ultrasonic time is 10min at room temperature, the intensity is 50KHz, and then the stirrer is placed, and at room temperature , Stir and react for 12h in a nitrogen protected environment, and wait until the reaction liquid is white and viscous; (2) The white viscous reaction liquid obtained in step (1) is subjected to vacuum distillation. When a large amount of solids are deposited, the vacuum distillation is stopped, and then water is added to the reaction flask and stirred, that is, white crystals are deposited. After suction filtration , Recrystallize with n-hexane to obtain pure β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide.2. The synthesis steps of antioxidant 1024(1) First, add 18 g of anhydrous β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionyl hydrazide, 10 g of ethyl acetoacetate, and 75 mL of dehydrated methanol and toluene into a three-necked flask. Solution (V methanol:V toluene=1:80), then add the rotor, and fix the thermometer, reflux condenser and nitrogen protection device on the three-necked flask;(2) Place the three-necked flask containing the reactants in step (1) in an oil bath to slowly raise the temperature, and stop the reaction after reacting for 3 hours at 85°C;(3) Cool the reaction solution of step (2) until crystals are precipitated, and then continue to drop to room temperature until the crystals are completely precipitated, and then perform suction filtration to obtain crystals. Wash the obtained crystals with water 3 times, and then use 5% hydrochloric acid Rinse, finally wash with water to neutrality, filter, and dry to obtain the final product Antioxidant 1024.
Check Digit Verification of cas no
The CAS Registry Mumber 32687-78-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,2,6,8 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 32687-78:
(7*3)+(6*2)+(5*6)+(4*8)+(3*7)+(2*7)+(1*8)=138
138 % 10 = 8
So 32687-78-8 is a valid CAS Registry Number.
InChI:InChI=1/C34H52N2O4/c1-31(2,3)23-17-21(18-24(29(23)39)32(4,5)6)13-15-27(37)35-36-28(38)16-14-22-19-25(33(7,8)9)30(40)26(20-22)34(10,11)12/h17-20,39-40H,13-16H2,1-12H3,(H,35,37)(H,36,38)
32687-78-8Relevant articles and documents
Synthetic process for antioxidant 1024
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Paragraph 0041; 0042; 0043; 0044; 0050; 0051; 0052; 0053, (2018/09/21)
The invention provides a synthetic method for an organic synthesis antioxidant 1024, that is, a synthetic method for N,N'-bis[beta(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine. The preparation method comprises the following steps: firstly synthesizing beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propanohydrazide by using hydrazine hydrate and beta-(3,5-di-tert-butyl-4-hydroxyphenyl)methyl propionate as raw materials, and synthesizing the N,N'-bis[beta(3,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine by using the beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propanohydrazide and ethyl acetoacetate as raw materials. According to the method provided by the invention, a solvent type, a mass ratio of one reactant to another reactant and a mass volume ratio of reactants to solvents in a reaction system are adjusted, so that the reaction is performed more thoroughly, a product yield is greatly improved, and the product yield in a pilot plant test can still be guaranteed to be higher than acurrent level.
A process for the preparation of hindered phenol antioxidant
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Paragraph 0027; 0028, (2017/03/17)
The invention relates to a novel preparation method for a hindered phenol antioxidant. The problems of multiple reaction steps, lower product yield, high environmental protection pressure and the like in the prior art are solved. According to the method, ester with a hindered phenol structure and hydrazine hydrate or diamine such as ethylenediamine, 1,3-propanediamine, 1,4-butanediamine, pentamethylenediamine or hexanediamine serve as raw materials, a one-step method is adopted for synthesizing a target product, and an alkaline catalyst is added to facilitate reaction. The product is widely applied to electric wires, cables and products embedded with metal parts.
Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith
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, (2008/06/13)
Hindered amines substituted on the N-atom with an hydroxy-substituted alkoxy moiety are particularly effective in stabilizing organic polymer compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not otherwise attainable.
