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Trisiloxane, 3-(4-ethenylphenyl)-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]- is a complex organic compound with the chemical formula C18H32O2Si4. It is a type of polysiloxane, which is a polymer composed of silicon, oxygen, and carbon atoms. This specific compound features a trisiloxane backbone, which consists of three repeating units of siloxane (Si-O-Si). The molecule also contains a 4-ethenylphenyl group, which is a phenyl ring with a vinyl group attached to the para position, and a trimethylsilyl group, which is a silicon atom bonded to three methyl groups. Trisiloxane, 3-(4-ethenylphenyl)-1,1,1,5,5,5-hexamethyl-3-[(trimethylsilyl)oxy]- is known for its thermal stability, low toxicity, and resistance to oxidation, making it useful in various applications such as lubricants, sealants, and coatings.

18547-54-1

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18547-54-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18547-54-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,5,4 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 18547-54:
(7*1)+(6*8)+(5*5)+(4*4)+(3*7)+(2*5)+(1*4)=131
131 % 10 = 1
So 18547-54-1 is a valid CAS Registry Number.

18547-54-1Downstream Products

18547-54-1Relevant academic research and scientific papers

Preparation of branched siloxane

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Page/Page column 14, (2010/02/10)

By reacting a branched siloxane compound of formula (2) containing compounds of formula (1) as an impurity with a disiloxane compound of formula (3) in the presence of an acid compound, there is prepared a branched siloxane of formula (2) containing a reduced level of compounds of formula (1).R1?nSi(OSiR2?3)3-n(OR3)R1?nSi(OSiR2?3)4-nR2?3SiOSiR2?3 R1 is a monovalent hydrocarbon group, R2 and R3 are H or monovalent hydrocarbon groups, and n is 0 or 1.

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