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Organometallic compounds

Diethylzinc

Also known as Et(2)Zn, (C2H5)2Zn, Diethyl zinc

CAS 557-20-0Formula C4H10ZnMolar mass 123.51 g/molEC 209-161-3
GHS signal word: Danger. Pictograms: Flammable, Corrosive, Hazardous to the environment 13 suppliers listed
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Diethylzinc chemical structure, C4H10Zn, CAS 557-20-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Mobile liquid
Melting point
-28 °C
Boiling point
118 °C
Density
1.2065 @ 20 °C/4 °C
Solubility
MISCIBLE WITH ETHER, PETROLEUM ETHER, BENZENE, HYDROCARBONS
HS code
290110
Category
Organometallic compounds
Illustrative photo, closed blue jerry cans in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Diethylzinc?

Plain description, key identifiers and synonyms

Diethylzinc is a pyrophoric liquid with a garlic-like odor. It is stable when it is shipped in sealed tubes with carbon dioxide. It may decompose violently in water and ignite spontaneously with air. It is toxic by ingestion. If exposed to heat or flame, containers of this material may explode. It is used as an aircraft fuel.

Identifiers

Registry numbers, names and line notations, tap to copy

CAS number
557-20-0 CAS number cross-checked
EC number
209-161-3
Molecular formula
C4H10Zn
InChIKey
HQWPLXHWEZZGKY-UHFFFAOYSA-N
InChI
InChI=1S/2C2H5.Zn/c2*1-2;/h2*1H2,2H3;
SMILES (canonical and isomeric)
C[CH2].C[CH2].[Zn]

Synonyms

  • Et(2)Zn
  • (C2H5)2Zn
  • Diethyl zinc
  • Diethylzink

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Appearance
Mobile liquidexp.
Odour
Garlic-like odorexp.
Melting point
-28 °Cexp.
Boiling point
118 °Cexp.
Density
1.2065 @ 20 °C/4 °Cexp.
Autoignition temperature
-17.8 °Cexp.
Solubility
MISCIBLE WITH ETHER, PETROLEUM ETHER, BENZENE, HYDROCARBONSexp.
Vapour pressure
20.8 mm Hg @ 25 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
123.51 g/molcalc.
Exact mass
122.0074 Dacalc.
LogP (octanol/water)
1.68calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS05: Corrosive
Corrosive
GHS09: Hazardous to the environment
Hazardous to the environment
433NFPA 704 rating

Hazard statements

  • H250Catches fire spontaneously if exposed to air.
  • H260In contact with water releases flammable gases which may ignite spontaneously.
  • H314Causes severe skin burns and eye damage.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (23)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P222Do not allow contact with air.
  • P223Do not allow contact with water.
  • P231Handle and store contents under inert gas.
  • P231 + P232Handle and store contents under inert gas. Protect from moisture.
  • P233Keep container tightly closed.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P330 + P331If swallowed: Rinse mouth. Do not induce vomiting.
  • P302 + P335 + P334If on skin: Brush off loose particles from skin. Immerse in cool water or wrap in wet bandages.
  • P302 + P361 + P354If on skin: Take off immediately all contaminated clothing. Immediately rinse with water for several minutes.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P363Wash contaminated clothing before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P391Collect spillage.
  • P402 + P404Store in a dry place. Store in a closed container.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Diethylzinc suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 13 suppliers
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Where suppliers are based

13 suppliers in 5 countries

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Diethylzinc price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Organic synthesis, catalyst for polymerization of olefins, high energy aircraft & missile fuel, production of ethyl mercuric chloride.

In paper deacidification.

Functional uses

  • Catalyst

How it is made

By interaction of zinc & ethyl iodide.

By interaction of zinc chloride with triethyl aluminum.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 030-004-00-8[2]

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diethylzinc is traded under.

HS 2901.10Indicative HS code

Saturated

World exports in 2024
$8.47B
+23.9% vs 2023, imports $7.66B
2019 to 2024
Top exporters
  1. United States79.8%
  2. Canada10.1%
  3. Germany1.4%
Top importers
  1. China34.6%
  2. United States12.2%
  3. Sweden5.0%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Diethylzinc is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diethylzinc, based on the data on this page

What is Diethylzinc?

Diethylzinc is a pyrophoric liquid with a garlic-like odor. It is stable when it is shipped in sealed tubes with carbon dioxide. It may decompose violently in water and ignite spontaneously with air. It is toxic by ingestion. If exposed to heat or flame, containers of this material may explode.

What is the CAS number of Diethylzinc?

The CAS registry number of Diethylzinc is 557-20-0.

What is the molecular formula and weight of Diethylzinc?

The molecular formula of Diethylzinc is C4H10Zn and its molar mass is 123.51 g/mol.

What is Diethylzinc used for?

Organic synthesis, catalyst for polymerization of olefins, high energy aircraft & missile fuel, production of ethyl mercuric chloride. In paper deacidification.

Is Diethylzinc hazardous?

Diethylzinc carries the GHS signal word "Danger". Main hazards: catches fire spontaneously if exposed to air, in contact with water releases flammable gases which may ignite spontaneously, causes severe skin burns and eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Diethylzinc?

Diethylzinc is usually classified under HS code 290110 (Saturated). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diethylzinc?

CompoundList lists 13 suppliers of Diethylzinc in United States, China, India, Japan and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Diethylzinc in India?

2 suppliers in India list Diethylzinc on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Diethylzinc?

Suppliers quote Diethylzinc on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diethylzinc

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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