1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane

Basic Information

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CAS Number

67762-83-8

Molecular Formula

C37H84O3Si4

Molecular Weight

689.42 g/mol

Chemical Classification

Polymers and Plastics Thermoplastics Polyolefins

Basic Physical Properties

Melting Point

40°C

Density

0,89 g/cm3

Refractive Index

1.440

SMILES

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CCCCCCCCCCCCCCCCCCCCCCCCCCCC[Si](C)(O[Si](C)(C)C)O[Si](C)(C)O[Si](C)(C)C

InChI

InChI=1S/C37H84O3Si4/c1-11-12-13-14-15-16-17-18-19-20-21-22-23-24-25-26-27-28-29-30-31-32-33-34-35-36-37-44(10,39-42(5,6)7)40-43(8,9)38-41(2,3)4/h11-37H2,1-10H3

InChIKey

CWTMMKOHEGZHGQ-UHFFFAOYSA-N

LogP

14.64229999999997

Topological Polar Surface Area

27.69 Å²

Hydrogen Bond Donor/Acceptor

0 / 3

Complexity

633

Synonyms & References

English

dimethyl-(methyl-octacosyl-trimethylsilyloxysilyl)oxy-trimethylsilyloxysilane
MFCD29067213
OCTADECYLMETHYLSILOXANE, DIMETHYLSILOXANE COPOLYMER
67762-83-8
Siloxanes and Silicones, di-Me, Me stearyl
ALKYLMETHYL
DIMETHYLSILOXANE COPOLYMER

MDL Number

MFCD00284015

FAQ

What are the physical and chemical properties of 1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane (CAS: 67762-83-8)?

1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane is a high-molecular-weight organosiloxane with a crystalline form at room temperature. The molecular weight is approximately 1000 g/mol. It is poorly soluble in water but soluble in organic solvents. Chemically, it is less reactive than lower molecular weight organosiloxanes, showing low reactivity under normal conditions.

How is 1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane (CAS: 67762-83-8) typically synthesized?

1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane is synthesized through the reaction of octacosylsilane with a mixture of methyl siloxanes in the presence of a Lewis acid catalyst, such as zinc chloride. The process involves condensation reactions leading to the formation of the desired tetrasiloxane with high selectivity and good yields.

What industries use 1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane (CAS: 67762-83-8)?

1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane is utilized in industries such as pharmaceuticals, where it can be used as a stabilizer, and in polymers, for improving physical properties. It is also used in sensors and semiconductors as a component in certain formulations, primarily due to its chemical stability and high molecular weight.

What precautions should be taken when handling 1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane (CAS: 67762-83-8)?

When handling 1,1,1,3,3,5,7,7,7-Nonamethyl-5-octacosyltetrasiloxane, it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Work should be carried out in a well-ventilated area or a fume hood. In case of a spill, immediately clean up using appropriate absorbent materials and follow safety guidelines for disposal. Always refer to the Safety Data Sheet (SDS) for detailed safety information.