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HENGDA-DMC - Dimethylcyclosiloxane

  • Chemical Name:

    Dimethylcyclosiloxane

  • CAS No.

    69430-24-6

Typical Properties

Product NameDimethylcyclosiloxane (DMC)
Molecular Formula[(CH₃)₂SiO]n,n=3~7
CAS NO.69430-24-6
Product StandardGB/T 20436-2006
Physical and Chemical Properties

Flash Point: 55°C

Relative Density(water=1): 0.956

AppearanceColorless transparent oilyliquid


Chroma/ Platinum-cobalt scale/ Hazen unit≤10
Refractive index nD²⁰1.3960~1.3970
Content of Dimethylsiloxane cyclics mixture/%≥99.80
Content of Hexamethyldisiloxane/% ≤0.005
Acidity (According to HCl) /%≤0.001


Features

Chemical Stability: Stable in closed contain-ers under specifed storage and handlingconditions.Conditions to Avoid:Incompatible materi-als, any sources ofignition or heat,exposure to moist air or water.Incompatibilities with Other Materials:Strong oxidizing agents, acids, bases.Hazardous Decomposition Products: In caseof a fre, oxides of carbon, hydrocarbons,silicon oxide,fumes, and smoke may begenerated by thermal decomposition orcombustion.

Hazardous Polymerization: May occur.


Usage

It is colorless,inflammable,and can notdissolve in water, but dissolve in organicsolvents such as benzene, etc. It can be usedto synthesize organic silicon polymer byacid or alkali catalysis to manufacturesilicone oil, silicone rubber, etc.

Storage

Steel drum,net weight 190kg/drum orInternational Bulk Container, net weight950kg/1BC or ISO TANK. Store in a cool,dry, well-ventilated area and keep awayfrom oxidant, acid and alkali. The storagearea should be equipped with thecorresponding species and quantity of fireequipmentand leakageemergencyequipment.Handling accordingtOhazardous substances.Be careful whenloading and unloading to avoid damages ofthe package.

HENGDA-DMC