Product Code

N612

Hexamethyldisilazane (HMDS)

CAS Number
999-97-3

Description

Silylating reagent, not a coupling agent or crosslinker. Reacts with hydroxyl and other active-hydrogen groups to install trimethylsilyl protecting groups, releasing ammonia. Used to render fumed silica and other mineral fillers hydrophobic, and as a surface-priming agent in semiconductor photolithography.

Synonyms

HMDSorganosilane1,1,1,3,3,3-Hexamethyldisilazane1,1,1-Trimethyl-N-(trimethylsilyl)silanamineBis(trimethylsilyl)amineHexamethyldisilylamineC6H19NSi2

Key applications

  • Hydrophobic surface treatment of fumed silica and mineral fillers
  • Photoresist adhesion priming in semiconductor lithography
  • Trimethylsilyl protecting-group chemistry

Characteristics

FamilySilane Intermediates & Reagents
FunctionalitySilylating agent
Molecular formulaC6H19NSi2
Molecular weight161.39 g/mol

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