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SiSiB® PC7970 Propyltriacetoxysilane
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SiSiB® PC7970 Propyltriacetoxysilane

SiSiB® PC7970

Propyltriacetoxysilane

SiSiB® PC7970 is a colourless to yellowish liquid, not miscible with water, decomposes with water and moisture under formation of acetic acid.

Technical Data

CAS No.

17865 07 5

EINECS No.:

241-816-9

Formula

C9H16O6Si

Molecular Weight

248.31

Boiling Point

236°C [760mmHg]

Flash Point

81°C

Color and Appearance

Colorless or yellowish clear liquid

Density 25/25°C

1.112

Refractive Index [20°C]

1.43

Active Content

98.00%

Application

SiSiB® PC7970 propyltriacetoxysilane, PTAS silane, is used as a raw material (crosslinker) for acetoxy crosslinking RTV-1 sealants.

Acetoxy silanes are more reactive than alkoxy silanes. Acetoxy silanes are frequently used as one-component mixtures to make RTV-1 silicone sealants. These mixtures have an excess of multi-functional acetoxy silane added to silanol-terminated PDMS, which results in a PDMS chain with acetoxy groups at the ends.

When this compound is exposed to moisture some acetoxy groups are hydrolyzed and self-condense or react with other acetoxy and rapid crosslinking takes place. Acetic acid formation is one of the driving forces of this reaction.

As one of silicone oil suppliers, we can provide high quality dimethyl silicone oil for sale, if you are interested, please leave us a message.

Location : Room 703, Tower A, KangYuan ZhiHuiGang, No.50 Jialingjiang East Street, Nanjing, China, 210000 nanjing,
Contact : Amy Wu, 025 58599930

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