18919-94-3

Basic information

• Product Name: TETRACOSAMETHYLCYCLODODECASILOXANE
• Synonyms: TETRACOSAMETHYLCYCLODODECASILOXANE;2,2,4,4,6,6,8,8,10,10,12,12,14,14,16,16,18,18,20,20,22,22,24,24-tetracosamethyl-1,3,5,7,9,11,13,15,17,19,21,23-dodecaoxa-2,4,6,8,10,12,14,16,18,20,22,24-dodecasilacyclotetracosane
• CAS NO: 18919-94-3
• Molecular Formula: C₂₄H₇₂O₁₂Si₁₂
• Molecular Weight: 889.85
• Mol File: 18919-94-3.mol
• Article Data: 3

Chemical Properties

• Boiling Point: 518.6°Cat760mmHg
• Flash Point: 260.6°C
• Appearance: /
• Density: 0.98g/cm³
• Vapor Pressure: 2.41E-10mmHg at 25°C
• Refractive Index: 1.44
• CAS DataBase Reference: TETRACOSAMETHYLCYCLODODECASILOXANE(CAS DataBase Reference)
• NIST Chemistry Reference: TETRACOSAMETHYLCYCLODODECASILOXANE(18919-94-3)
• EPA Substance Registry System: TETRACOSAMETHYLCYCLODODECASILOXANE(18919-94-3)

Safety Data

• Hazardous Substances Data: 18919-94-3(Hazardous Substances Data)

Usage

Uses

Tetracosamethylcyclododecasiloxane is a pollutant present in the process of textile enhancements and pretreatments with ozone. Petroleum environmental contaminant.

InChI:InChI=1/C24H72O12Si12/c1-37(2)25-38(3,4)27-40(7,8)29-42(11,12)31-44(15,16)33-46(19,20)35-48(23,24)36-47(21,22)34-45(17,18)32-43(13,14)30-41(9,10)28-39(5,6)26-37/h1-24H3

Upstream product

• 10236-47-2 naringin 
• 50376-43-7 4'-rhamnoglucosyloxy-2',4,6'-trihydroxychalcone 
• 10236-47-2 naringin 
• 4098-30-0 dodecamethylcyclohexasilane 

Relevant articles and documents

Hydrogenolysis of Polysilanes Catalyzed by Low-Valent Nickel Complexes

The dehydrogenation of organosilanes (RxSiH4?x) under the formation of Si?Si bonds is an intensively investigated process leading to oligo- or polysilanes. The reverse reaction is little studied. To date, the hydrogenolysis of Si?Si bonds requires very harsh conditions and is very unselective, leading to multiple side products. Herein, we describe a new catalytic hydrogenation of oligo- and polysilanes that is highly selective and proceeds under mild conditions. New low-valent nickel hydride complexes are used as catalysts and secondary silanes, RR′SiH2, are obtained as products in high purity.

Dihydrochalcones: Evaluation as novel radical scavenging antioxidants

Dihydrochalcones are a family of bicyclic flavonoids, defined by the presence of two benzene rings joined by a saturated three carbon bridge. In the present study, we systematically examined the antioxidant activities of dihydrochalcones against the stable free radical (1,1-diphenyl-2-picrylhydrazyl) and lipid peroxidation in the erythrocyte membrane. All dihydrochalcones exhibited higher antioxidant activities than the corresponding flavanones. The 1H NMR analysis indicated that the active dihydrochalcone has a time-averaged conformation in which the aromatic A ring is orthogonal to the carbonyl group, while the inactive dihydrochalcone such as 2′-O-methyl-phloretin has a strongly hydrogen-bonded phenolic hydroxyl group, suggestive of a coplanar conformation. A hydroxyl group at the 2′-position of the dihydrochalcone A ring, newly formed by reduction of the flavanone C ring, is an essential pharmacophore for its radical scavenging potential.