Hexamethyldisilazane

U.S. production volumes are classified as confidential business information.

Molecular structure of 999-97-3
US ProductionCBI
Import Value$537M
Top SourceChina 39%

The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.

Where It Comes From

Customs basis: HS 293190 · basket

These shares come from HS customs code 293190, which covers 164 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
CN 39%ChinaDE 17%GermanyIT 9%ItalyIN 7%IndiaJP 7%Japan
EPA-registered manufacturers (2)
Momentive Performance Materials
The Dow Chemical
EPA-registered importers (7)
Shin-Etsu Chemical · JP Japan
Brb North America
Evonik
K&M Holdings Group
Shin-Etsu Microsi
Show all 7
The Dow Chemical
Vencorex Us

Why It Matters

Sectors
HealthElectronicsConstructionMetals & MiningPlastics & RubberPaints & CoatingsPaper & PrintingCore Chemicals
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 12 sectors as 6 functional roles.

  • •Intermediate in All Other Basic Organic Chemical Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Plastics Material and Resin Manufacturing (80%)Processing as a reactant
  • •Adhesives and sealant chemicals in Adhesive Manufacturing (15%)Processing as a reactant
  • •Polymerization promoter in Rubber Product Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Viscosity modifiers in All Other Chemical Product and Preparation Manufacturing (50%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in Synthetic Rubber Manufacturing (35%)Processing as a reactant
  • •Intermediate in Computer and Electronic Product Manufacturing (25%)Processing as a reactant
  • •Intermediate in All Other Chemical Product and Preparation Manufacturing (25%)Processing—repackaging
  • •Adhesives and sealant chemicals in Synthetic Rubber Manufacturing (25%)Processing—incorporation into formulation, mixture, or reaction product
  • •Adhesives and sealant chemicals in Electrical Equipment, Appliance, and Component Manufacturing (25%)Processing—incorporation into formulation, mixture, or reaction product
  • •Adhesion/cohesion promoter in Other (100%)Processing—repackaging
  • •Intermediate in All Other Basic Inorganic Chemical Manufacturing (100%)Processing as a reactant
  • •Polymerization promoter in Paint and Coating Manufacturing (100%)Processing as a reactant
  • •Chemical reaction regulator in Pharmaceutical and Medicine ManufacturingUse—non-incorporative activities

Chemical Identity

CAS999-97-3
PubChem CID13838
DTXSIDDTXSID2025395
FormulaC6H19NSi2
Mol. Weight161.39 g/mol
SMILESC[Si](C)(C)N[Si](C)(C)C

Data Sources

DTXSID20253952026-04-06

https://doi.org/10.23645/epacomptox.5588566

Archive: data/sources/comptox/dsstox_identifiers.csv

138382026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/13838/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/13838.json

999-97-32026-04-24

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr.csv

CAS 999-97-32026-04-25

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr_industrial.csv

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