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4,4'-Propylidenebis(3-methyl-6-tert-butylphenol), also known as PTBP or Bisphenol B, is a chemical compound with the molecular formula C21H30O2. It is a white crystalline solid that is widely used as an antioxidant and a UV stabilizer in the manufacturing of plastics, rubber, and adhesives. 4,4'-propylidenebis(3-methyl-6-tert-butylphenol) is particularly effective in protecting materials from the harmful effects of ultraviolet radiation, which can cause degradation and discoloration. Its chemical structure features two phenol groups connected by a propylidenebis bridge, with methyl and tert-butyl substituents on the phenol rings, which contribute to its stability and effectiveness as an antioxidant.

4081-20-3

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4081-20-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4081-20-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,8 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 4081-20:
(6*4)+(5*0)+(4*8)+(3*1)+(2*2)+(1*0)=63
63 % 10 = 3
So 4081-20-3 is a valid CAS Registry Number.

4081-20-3Downstream Products

4081-20-3Relevant academic research and scientific papers

Preparation method of bisphenol compound antioxidant 4,4,'-methylenebis(3-methyl-6-di-tert-butylphenol)

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Paragraph 0014-0019, (2017/08/29)

The invention discloses a preparation method of a bisphenol compound antioxidant 4,4,'-methylenebis(3-methyl-6-di-tert-butylphenol). The preparation method specifically comprises the following synthesis steps of using a sealed reaction kettle as a reactio

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