2895-07-0

Basic information

• Product Name: 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE
• Synonyms: 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE;1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE 90%;1,1,1,3,3,5,5-Heptamethylpentanetrisiloxane;1,1,3,3,5,5,5-Heptamethylpentanetrisiloxane;Trisiloxane,1,1,1,3,3,5,5-heptamethyl-
• CAS NO: 2895-07-0
• Molecular Formula: C₇H₂₂O₂Si₃
• Molecular Weight: 222.5
• EINECS: 220-774-5
• Mol File: 2895-07-0.mol

Chemical Properties

• Boiling Point: 134 °C
• Flash Point: 21°C
• Appearance: /
• Density: 0.82
• CAS DataBase Reference: 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE(2895-07-0)
• EPA Substance Registry System: 1,1,1,3,3,5,5-HEPTAMETHYLTRISILOXANE(2895-07-0)

Safety Data

• Statements: 10-36/37/38
• Safety Statements: 16-33-36/37/39
• RIDADR: 1993
• TSCA: No
• HazardClass: 3.1
• PackingGroup: II
• Hazardous Substances Data: 2895-07-0(Hazardous Substances Data)

Usage

Uses

Used in Lubrication Applications:
1,1,1,3,3,5,5-Heptamethyltrisiloxane is used as a lubricant due to its ability to reduce friction and wear between moving parts, enhancing the performance and longevity of machinery.
Used in Anti-Foaming Applications:
In industries where foam can cause issues, 1,1,1,3,3,5,5-Heptamethyltrisiloxane is used as an anti-foaming agent to prevent the formation of foam, ensuring smooth and efficient processes.
Used in Silicone Polymer and Elastomer Production:
1,1,1,3,3,5,5-Heptamethyltrisiloxane is utilized as a key component in the production of silicone polymers and elastomers, contributing to their unique properties such as flexibility, durability, and heat resistance.
Used in Industrial Processes as a Spreading and Wetting Agent:
1,1,1,3,3,5,5-Heptamethyltrisiloxane is employed to improve the spreading and wetting of liquids on surfaces, which is crucial for even distribution and optimal performance in various applications.
Used in Molding and Casting as a Release Agent:
In the molding and casting industry, 1,1,1,3,3,5,5-Heptamethyltrisiloxane is used as a release agent to facilitate the separation of the cast material from the mold, reducing the need for additional processing and improving production efficiency.

InChI:InChI=1/C7H21O2Si3/c1-10(2)8-12(6,7)9-11(3,4)5/h1-7H3

Upstream product

• 1112-39-6 dimethyldimethoxysilan 
• 1438-82-0 1,1,1,3,3-pentamethyl-1,3-disiloxane 
• 75-77-4 chloro-trimethyl-silane 

Downstream Products

• 58110-17-1 C₃₄H₄₈O₅Si₆ 
• 945020-77-9 2-(4-hydroxyphenyl)-5-[11-(1,1,1,3,3,5,5-heptamethyltrisiloxanyl)hexyloxy]pyrimidine 

Relevant articles and documents

1,1,1,3,3,5,5-heptamethyltrisiloxane preparation method

The present invention discloses a 1,1,1,3,3,5,5-heptamethyltrisiloxane preparation method, wherein 1,1,1,3,3,3-hexamethyldisiloxane and 1,1,3,3-tetramethyldisiloxane are subjected to co-hydrolysis for 1-4 h under catalysis of concentrated sulfuric acid to obtain 1,1,1,3,3-pentamethyldisiloxane, the 1,1,1,3,3-pentamethyldisiloxane and dimethyl dimethoxy silicane are subjected to co-hydrolysis for 1-3 h under catalysis of concentrated sulfuric acid, rectification is performed, and the distillate at a temperature of 135 DEG C is collected so as to obtain the 1,1,1,3,3,5,5-heptamethyltrisiloxane product. According to the present invention, the method has characteristics of strong target property, less by-product content in the product, and easy separation.

Platinum-catalyzed reduction of DMF by 1,1,3,3-tetramethyldisiloxane, HMeSi2OSiMe2H: New intermediates HSiMe 2OSiMe2OCH2NMe2 and HSiMe 2(OSiMe2)3OCH2

The use of Karstedt's catalyst to study the reduction of Me2NCHO (DMF) by the popular "dual SiH"-containing tetramethyldisiloxane, HMe2SiOSiMe2H (1), has revealed that the first step in the process involves an initial sing

METAL COMPLEX-CATALYZED REDISTRIBUTION REACTIONS OF ORGANOSILANES. IV. REDISTRIBUTION REACTIONS OF METHYLSILOXANES CATALYZED BY TRANSITION METAL COMPLEXES

Redistribution reactions of a variety of hydrogen-substituted siloxanes are catalyzed by various transition metal complexes of iridium and rhodium.The products arise from breaking and remaking of Si-C, Si-H, and Si-O bonds.Siloxanes not possessing a Si-H bond are inert under the conditions studied.The most favored reaction pathway appears to scramble preferentially the groups directly attached to the silicon bearing the hydrogen atom.A new cyclo-iridiadisiloxane, (L = Ph3P; R = Me3SiO) is reported.This compound exists in three isomeric forms as a consequence of the spatial arrangements of the R and Me groups on the ring.