1,1,1,5,5,5-Hexamethyl-3-phenyl-3-(trimethylsilyloxy)trisiloxane

CAS 2116-84-9

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import volume3.1K lb

Import dependency100%

Top sourceNo public record

Production is reported production, not a complete census of factories. Production reporting year: 2023.

Where It Comes From

EPA reports by year

2023: US production Zero · Imports 3.1K lb
2019: US production Zero · Imports 83.6K lb

Domestic parents -- activity not disclosed (1)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Ab Specialty Silicones

EPA-registered importers (1)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Elementis

Why It Matters

Sectors

Core Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 2 sectors as 1 functional role.

•Viscosity modifiers in Not Known or Reasonably AscertainableProcessing—incorporation into formulation, mixture, or reaction product
•Viscosity modifiers in All Other Chemical Product and Preparation Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.30/gA2B Chem LLC

CountryUnited States

Pack$301.00 / 1 kg

Purity98%

Vendors17 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

16 more vendors

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$0.31	500 g	98%
Angene Chemical	China → Hong Kong	$0.34	500 g	98%
AA BLOCKS	United States	$0.34	1 kg	98%
Combi-Blocks, Inc.	United States	$0.38	1 kg	98%
Chemscene	United States	$0.43	1 kg	—
BLD Pharmatech Co., Limited	United States	$0.43	1 kg	98%
BLD Pharmatech Ltd.	China	$0.43	1 kg	98%
Ambeed, Inc.	United States	$0.43	1 kg	98%
BLD Pharmatech GmbH	Germany	$0.48	500 g	98%
Fluorochem EU	Germany	$0.51	500 g	98%
Synthonix	United States	$0.80	100 g	98%
AK Scientific Specialized	United States	$0.96	100 g	95%
AK Scientific, Inc.	United States	$1.31	100 g	98%
Angene International Limited	United States	$1.83	100 g	95%
AstaTech (2 weeks)	United States	$40.00	1 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS2116-84-9

PubChem CID62427

DTXSIDDTXSID6051857

FormulaC15H32O3Si4

Mol. Weight372.75 g/mol

SMILESC[Si](C)(C)O[Si](C1=CC=CC=C1)(O[Si](C)(C)C)O[Si](C)(C)C

Data Sources

EPA CompTox (DSSTox) · DTXSID6051857Retrieved 2026-04-06
PubChem · compound 62427Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

1,1,1,5,5,5-Hexamethyl-3-phenyl-3-(trimethylsilyloxy)trisiloxane (CAS 2116-84-9) https://chemicalindependence.com/chemical/2116-84-9/ EPA CompTox (DSSTox): DTXSID6051857. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6051857 PubChem: 62427. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/62427 EPA Chemical Data Reporting: 2116-84-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 2116-84-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting