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Insecticides and acaricides

Dienochlor

Also known as Decachlor, Pentac, Pentac WP

CAS 2227-17-0Formula C10Cl10Molar mass 474.64 g/molEC 218-763-5
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment
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Dienochlor chemical structure, C10Cl10, CAS 2227-17-0
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Tan crystalline solid
Melting point
122 to 123
Boiling point
250 °C
Solubility
In water, 2.50 × 10⁻² mg/L @ 20 °C
HS code
290389
Category
Insecticides and acaricides
Illustrative photo, drums, an IBC tote and sacks in a chemical warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Dienochlor?

Plain description, key identifiers and synonyms

Dienochlor is an organochlorine compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,2,3,4,5-pentachloro-5-(1,2,3,4,5-pentachlorocyclopenta-2,4-dien-1-yl)cyclopenta-1,3-diene
CAS number
2227-17-0 CAS number cross-checked
EC number
218-763-5
Molecular formula
C10Cl10
UNII
243Z2SVZ40
MDL number
MFCD00019272
InChIKey
LWLJUMBEZJHXHV-UHFFFAOYSA-N
InChI
InChI=1S/C10Cl10/c11-1-2(12)6(16)9(19,5(1)15)10(20)7(17)3(13)4(14)8(10)18
SMILES (canonical and isomeric)
C1(=C(C(C(=C1Cl)Cl)(C2(C(=C(C(=C2Cl)Cl)Cl)Cl)Cl)Cl)Cl)Cl

Synonyms

  • Decachlor
  • Pentac
  • Pentac WP
  • Dienochlore
  • Pentac SP
  • Hooker HRS 1654
  • Bis(pentachlorocyclopentadienyl)
  • HRS 16A
  • Bis(pentachloro-2,4-cyclopentadien-1-yl)
  • Decachlorobi-2,4-cyclopentadien-1-yl
  • Pentac (50WP)
  • HRS 1654
  • ENT 25,718
  • Bis(pentachlor-2,4-cyclopentadien-1-yl)
  • Perchloro-1,1'-bicyclopenta-2,4-diene
  • Bi-2,4-cyclopentadien-1-yl, decachloro-
  • 1,1',2,2',3,3',4,4',5,5'-Decachlorobi-2,4-cyclopentadien-1-yl
  • Decachlorobis(2,4-cyclopentadien-1-yl)
  • Perchloro-1,1'-bicyclopenta-2,4-dienyl
  • Hooker hrs-16
  • Decachlorobi-2,4-cyclopentadiene-1-yl
  • Decachlorobis(2,4-cyclopentadiene-1-yl)
  • Bi-2,4-cyclopentadien-1-yl, 1,1',2,2',3,3',4,4',5,5'-decachloro-
  • 1,2,3,4,5-pentachloro-5-(1,2,3,4,5-pentachlorocyclopenta-2,4-dien-1-yl)cyclopenta-1,3-diene
  • HRS 16
Show all 33 synonyms
  • Bi-2, decachloro-
  • Pentac aquaflow
  • Dienochlore [ISO-French]
  • Bi-2, 1,1',2,2',3,3',4,4',5,5'-decachloro-
  • C10Cl10
  • 4-05-00-01542 (Beilstein Handbook Reference)
  • perchloro-[1,1'-bi(cyclopentane)]-2,2',4,4'-tetraene
  • Dienochlor, PESTANAL(R), analytical standard

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
Tan crystalline solidexp.
Melting point
122 to 123exp.
Boiling point
250 °Cexp.
Solubility
In water, 2.50 × 10⁻² mg/L @ 20 °Cexp.
Vapour pressure
2.18 × 10⁻⁶ mm Hg at 25 °C /Extrapolated/exp.

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
474.64 g/molcalc.
Exact mass
469.6885 Dacalc.
LogP (octanol/water)
7.73calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
1calc.
Heavy atoms
20calc.
Rings
2calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.2calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (1 violation)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=CC(C2C=CC=C2)C=C1

C1=CC(C2C=CC=C2)C=C1

2 rings, 10 atoms, the 5-Cyclopenta-2,4-dien-1-ylcyclopenta-1,3-diene ring system.

2 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H319Causes serious eye irritation.
  • H400Very toxic to aquatic life.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P330Rinse mouth.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • 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

Dienochlor suppliers

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Dienochlor price

Indicative price range per kg from live supplier offers

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Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Acaricide on greenhouse and ornamental crops.

Dienochlor is specific acaricide used to control mites on glasshouse roses at 250 mg ai/L water using 2 applications with a 14-day interval, on other ornamentals 1 application is sufficient except for severe attacks.

Control of spider mites on ... chrysanthemums, and other ornamentals, both outdoors and under glass.

Control of mites on ornamentals.

Functional uses

  • Biocide

How it is made

Dienochlor is produced by the catalytic reduction of hexachlorocyclopentadiene.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2903.89Indicative HS code

Halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, other

World exports in 2024
$92.3M
−2.2% vs 2023, imports $90.8M
2019 to 2024
Top exporters
  1. China40.4%
  2. Japan26.5%
  3. United Kingdom7.2%
Top importers
  1. South Korea19.2%
  2. Japan16.6%
  3. United States15.8%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Dienochlor?

Dienochlor is an organochlorine compound.

What is the CAS number of Dienochlor?

The CAS registry number of Dienochlor is 2227-17-0.

What is the molecular formula and weight of Dienochlor?

The molecular formula of Dienochlor is C10Cl10 and its molar mass is 474.64 g/mol.

What is Dienochlor used for?

Acaricide on greenhouse and ornamental crops. Dienochlor is specific acaricide used to control mites on glasshouse roses at 250 mg ai/L water using 2 applications with a 14-day interval, on other ornamentals 1 application is sufficient except for severe attacks. Control of spider mites on ...

Is Dienochlor hazardous?

Dienochlor carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes serious eye irritation, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Dienochlor?

Dienochlor is usually classified under HS code 290389 (Halogenated derivatives of cyclanic, cyclenic or cycloterpenic hydrocarbons, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Dienochlor?

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What is the price of Dienochlor?

Suppliers quote Dienochlor 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 Dienochlor

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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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