13438-48-7 Usage
General Description
2,2,4,4,6,6,8,8-octamethyl-10,10-diphenyl-1,3,5,7,9,2,4,6,8,10-pentoxapentasilecane, also known as musk xylene, is a synthetic chemical commonly used as a fragrance in perfumes and household products. It is a long-lasting and stable compound with a strong, sweet, and musky odor. Musk xylene is produced by the alkylation of dimethyl sulfate with a mixture of toluene and xylene, followed by amination and subsequent hydrolysis. It is a member of the nitro musk family and has been used in the industry since the 1920s, although its use has declined in recent years due to environmental concerns and its potential to bioaccumulate in living organisms.
Check Digit Verification of cas no
The CAS Registry Mumber 13438-48-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,4,3 and 8 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 13438-48:
(7*1)+(6*3)+(5*4)+(4*3)+(3*8)+(2*4)+(1*8)=97
97 % 10 = 7
So 13438-48-7 is a valid CAS Registry Number.
13438-48-7Relevant articles and documents
PROCESS FOR THE PRODUCTION OF CYCLOSILOXANES
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Paragraph 0022, (2013/04/10)
Embodiments of the invention are directed to the preparation of a discrete cyclosiloxane or a discrete mixture of cyclosiloxanes where a dihydroxysilane or dihydroxysiloxane condenses with a dihydrosilane or dihydroxysiloxane in the presence of a Lewis acid catalyst in a reaction phase including a solvent. The introduction of the dihydroxysilane or dihydroxysiloxane and dihydrosilane or dihydroxysiloxane is controlled such that the cyclocondensation occurs in a reaction phase that is dilute in the SiH and SiOH functionality permitting the isolation of the monocyclocondensation adduct in high yield with little higher molecular weight condensation products. In one embodiment of the invention 1,1-diphenyl-3,3,5,5-tetramethylcyclotrisiloxane is prepared in very high yield.
