DEZ: Diethylzinc (557-20-0) — Chain-shuttling Agent for Polymer Production

August 12, 2026 3 min read





DEZ: Diethylzinc (557-20-0) — Chain-shuttling Agent for Polymer Production



DEZ: Diethylzinc (CAS 557-20-0)

DEZ is a zinc alkyl used as a chain-shuttling agent in block copolymer polymerization. It enables precise control over polymer architecture in olefin block copolymer production.

Quick Facts

Trade Name DEZ
Chemical Name Diethylzinc
CAS Number 557-20-0
Chemical Family Zinc Alkyl
Brand Dosender
Function Category Chain-shuttling Agent
Product Line Metal Alkyls – Zinc Alkyls
Applications Chain Shuttling, Block Copolymer, Polymerization
Market Segment Polymer Production
Physical Form Liquid
Decomposition Temperature
Active Oxygen Content
Molecular Weight 123.51

What Is Diethylzinc?

Diethylzinc is a zinc alkyl supplied under the Dosender brand as part of the
Metal Alkyls – Zinc Alkyls portfolio. DEZ is a zinc alkyl used as a chain-shuttling agent in block copolymer polymerization. It enables precise control over polymer architecture in olefin block copolymer production. As a chain-shuttling agent,
it is engineered for demanding Polymer Production applications where consistency and purity are critical.

Key Properties & Specifications

  • Chemical family: Zinc Alkyl
  • CAS number: 557-20-0
  • Physical form: Liquid
  • Decomposition temperature:
  • Active oxygen content:
  • Molecular weight: 123.51

How It Works

Diethylzinc is an organometallic compound that functions as an alkylating / co-catalyst component in coordination polymerization systems (for example Ziegler-Natta and metallocene processes) and as a reducing or initiating reagent in fine-chemical synthesis. Many metal alkyls are pyrophoric and react violently with water, so they are supplied and handled under inert atmosphere.

Primary Applications

DEZ is applied across Chain Shuttling, Block Copolymer, Polymerization. Typical market segments include Polymer Production.
Its performance profile makes it a trusted choice for formulators who need reproducible,
high-purity raw materials.

Safety, Handling & Storage

Handle DEZ in accordance with its Safety Data Sheet (SDS). Store in original,
sealed packaging away from heat, ignition sources and incompatible materials, within the
recommended temperature range. Personal protective equipment and adequate ventilation are
required. Always consult the current SDS and applicable local regulations before use.

Regulatory & Compliance

Do Sender Chem supplies Diethylzinc with full documentation and supports compliance with
international chemical regulations (including REACH where applicable). For controlled
precursor grades, supply is managed under know-your-customer and licensing procedures.

Why Source DEZ from Do Sender Chem?

Do Sender Chem is a global specialty chemical manufacturer offering a broad, multi-language
catalog, consistent quality and responsive technical support. With localized content in 20
languages and worldwide delivery, we help polymer, rubber and specialty producers secure
reliable chain-shuttling agent supply.

Frequently Asked Questions

What is Diethylzinc used for?

Diethylzinc (trade name DEZ) is used as a Chain-shuttling Agent in Chain Shuttling, Block Copolymer, Polymerization. It serves manufacturers in the Polymer Production segments.

What is the CAS number of Diethylzinc?

The CAS Registry Number of Diethylzinc is 557-20-0. The CAS number uniquely identifies the substance and is the standard reference used in safety data sheets, regulatory filings and procurement specifications.

Is Diethylzinc classified as Zinc Alkyl?

Yes. Diethylzinc belongs to the Zinc Alkyl chemical family and is marketed under the Dosender brand as part of the Metal Alkyls – Zinc Alkyls product line.

How should DEZ be stored and handled?

DEZ should be stored according to its safety data sheet, away from heat, ignition sources and incompatible materials, in original sealed packaging under the recommended temperature range. Always consult the current SDS and local regulations before handling.

Which industries buy DEZ?

DEZ is supplied to producers in the Polymer Production industries that require reliable, high-purity Chain-shuttling Agent raw materials.

Related Products

Explore other zinc alkyl and chain-shuttling agent products in our catalog, or contact
our team for formulation guidance.

References

  • CAS Registry Number: 557-20-0 — Diethylzinc
  • Do Sender Chem product data sheet: DEZ


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