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Hexamethyldisilazane RJ-HMDS

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Description

Chemical name: 1,1,1,3,3,3-HEXAMETHYLDISILAZANE

Other Name: Bistrimethylsilylamine, Bis(trimethylsily)azane, Hexamethyldisilazane

Molecular Formula: (CH3)3SiNHSi(CH3)3

CAS No: 999-97-3

Chemical structure:

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Hexamethyldisilazane RJ-HMDS is colorless transparent liquid with amine smell. A derivative of ammonia, when two hydrogen atoms of ammonia be taken the place of trimethyl silicon group. It is easy to happen hydrolysis, release NH3, and become hexamethyldisiloxane.

Technical Index

PropertySpecification
Content of Hexamethyldisilazane (%) Min 99.0 
Content of Hexamethyldisiloxane (%) Max 0.3 
Content of Trimethyl silanol (%) Max 0.2 
Molecular weight 161.39
Refractive index nD( 20) 1.408 ± 0.002
Boiling point 126℃
Flash Point 7.4℃
Color Max 10
Density (25℃) g/cm3 0.770 — 0.780
CAS No. 999-97-3

Application

Silazane RJ-HMDS is mainly used to organic synthesis and as important reagent of organometallic chemistry:

  • Organic synthesis

Agent for special organic synthesis

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  • Pharmaceuticals

An important silylating agent (introduction of the tri-methylsilyl group)

manuf actures of medicines, such as amikacin,penicillin and derivatives etc.

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  • Surface treatment

Surface treatment agents for diatomite, silica and titanium powder

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  • Photolithography (Semiconductor industry)

Cohesive aid for light etching agents in semiconductor industry.

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Packing

RJ-HMDS is available in 150kg iron drums, or other packing on request.

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