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Bis(1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl)phthalate, also known as BTMPP, is a chemical compound that belongs to the family of nitroxide radicals. It is a stable free radical with a molecular formula of C22H38N2O4 and a molecular weight of 394.55 g/mol. BTMPP is characterized by its ability to act as a spin label and a radical scavenger, making it useful in various applications such as electron paramagnetic resonance (EPR) spectroscopy, polymer stabilization, and as an antioxidant in industrial processes. The compound's structure consists of a phthalate core with two 1-oxyl-2,2,6,6-tetramethylpiperidin-4-yl groups attached to it, which contribute to its unique properties and reactivity.

3936-30-9

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3936-30-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3936-30-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,3 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 3936-30:
(6*3)+(5*9)+(4*3)+(3*6)+(2*3)+(1*0)=99
99 % 10 = 9
So 3936-30-9 is a valid CAS Registry Number.

3936-30-9Relevant academic research and scientific papers

Inhibition of polymerization of unsaturated monomers

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, (2008/06/13)

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of a mixture comprising: A) at least one stable hindered nitroxyl compound having the structural formula: wherein R1and R4are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl and R2and R3are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl; and X1and X2(1) are independently selected from the group consisting of halogen, cyano, COOR7, —S—COR7, —OCOR7, (wherein R7is alkyl or aryl), amido, —S—C6H5, carbonyl, alkenyl, or alkyl of 1 to 15 carbon atoms, or (2) taken together, form a ring structure with the nitrogen; and B) at least one inhibitor selected from the group consisting of ortho-quinone, ortho-hydroquinone, para-quinone, para-hydroquinone, and derivatives of the foregoing.

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