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Insecticides and acaricides

Heptachlor

Also known as Heptachlorane, Agroceres, Heptamul

CAS 76-44-8Formula C10H5Cl7Molar mass 373.32 g/molEC 200-962-3
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Serious health hazard, Hazardous to the environment Prohibited, not for trade
Why it is not for trade
Heptachlor chemical structure, C10H5Cl7, CAS 76-44-8
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
White to light tan waxy solid
Melting point
95 to 96
Boiling point
145 °C
Density
1.6 g/cm³
Solubility
In water, 0.18 mg/l @ 25 °C
HS code
290382
Category
Insecticides and acaricides
UN number
UN 2761

What is Heptachlor?

Plain description, key identifiers and synonyms

Heptachlor is a cyclodiene organochlorine insecticide that is 3a,4,7,7a-tetrahydro-1H-4,7-methanoindene substituted by chlorine atoms at positions 1, 4, 5, 6, 7, 8 and 8. Formerly used to kill termites, ants and other insects in agricultural and domestic situations. It has a role as an antibacterial agent, an agrochemical, an antifungal agent, a GABA-gated chloride channel antagonist and a persistent organic pollutant. It derives from a hydride of a 1H-indene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,5,7,8,9,10,10-heptachlorotricyclo[5.2.1.02,6]deca-3,8-diene
CAS number
76-44-8 CAS number cross-checked
EC number
200-962-3
Molecular formula
C10H5Cl7
MDL number
MFCD00213497
InChIKey
FRCCEHPWNOQAEU-UHFFFAOYSA-N
InChI
InChI=1S/C10H5Cl7/c11-4-2-1-3-5(4)9(15)7(13)6(12)8(3,14)10(9,16)17/h1-5H
SMILES (canonical and isomeric)
C1=CC(C2C1C3(C(=C(C2(C3(Cl)Cl)Cl)Cl)Cl)Cl)Cl

Synonyms

  • Heptachlorane
  • Agroceres
  • Heptamul
  • 3-Chlorochlordene
  • Heptagran
  • Rhodiachlor
  • Aahepta
  • GPKh
  • Hepta
  • Velsicol 104
  • Heptachloor
  • Heptachlore
  • Velsicol heptachlor
  • Eptacloro
  • Drinox
  • Heptox
  • Arbinex 30TN
  • Basaklor
  • Heptagranox
  • Heptamak
  • Heptasol
  • Soleptax
  • Rcra waste number P059
  • Latka 104
  • ENT 15,152
Show all 39 synonyms
  • Heptachlorotetrahydro-4,7-methanoindene
  • Gold Crest H-60, Termide
  • Heptachlor (technical grade)
  • Drinox H-34
  • OMS 193
  • 3,4,5,6,7,8,8a-Heptachlorodicyclopentadiene
  • 1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methano-1H-indene
  • 4,7-Methano-1H-indene, 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-
  • Dicyclopentadiene, 3,4,5,6,7,8,8a-heptachloro-
  • 1,4,5,6,7,8,8-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindene
  • 1,5,7,8,9,10,10-heptachlorotricyclo[5.2.1.02,6]deca-3,8-diene
  • 1,4,5,6,7,8,8a-Heptachloro-3a,4,7,7a-tetrahydro-4,7-methanoindane
  • 1,4,5,6,7,10,10-Heptachloro-4,7,8,9-tetrahydro-4,7-methyleneindene
  • 1,4,5,6,7,8,8-heptachloro-3a,4,7,7a-tetrahydro-1H-4,7-methanoindene

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
White to light tan waxy solidexp.
Odour
Camphor-like odorexp.
Melting point
95 to 96exp.
Boiling point
145 °Cexp.
Density
1.6 g/cm³exp.
Solubility
In water, 0.18 mg/l @ 25 °Cexp.
Vapour pressure
4.0 × 10⁻⁴ 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
373.32 g/molcalc.
Exact mass
369.8211 Dacalc.
LogP (octanol/water)
5.24calc.
Topological polar surface area
0 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
17calc.
Rings
3calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.6calc.
Formal charge
0calc.
Stereocentres
5calc.
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=CC2C3C=CC(C3)C2C1

C1=CC2C3C=CC(C3)C2C1

3 rings, 10 atoms, the Dicyclopentadiene ring system.

70 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS06: Acute toxicity (severe)
Acute toxicity (severe)
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H351Suspected of causing cancer.
  • H373May cause damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P262Do not get in eyes, on skin, or on clothing.
  • P264Wash skin thoroughly after handling.
  • 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 + P316If swallowed: Get emergency medical help immediately.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P318If exposed or concerned, get medical advice.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P361 + P364Take off immediately all contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2761
Transport hazard class
6.1
Packing group
II

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

Heptachlor suppliers

Trading restrictions apply to this substance

Persistent organic pollutant

Heptachlor is prohibited on CompoundList. Listings, quotes and messages are disabled. This page is kept for information only.

Listing and enquiries are not allowed for this substance.

Reference: Stockholm Convention on Persistent Organic Pollutants, HS 2022 subheading 2903.82 (aldrin, chlordane and heptachlor)

Our policy on controlled substances

Heptachlor price

Indicative price range per kg from live supplier offers

Prices are not shown for prohibited substances.

Uses and applications

What the substance is used for, by industry and function

Insecticide for control of cotton boll weevil (Former use).

Termite control, seed/seed furrow treatment, wood treatment (Former use).

Insecticide formerly used in the control of certain soil-inhabiting insects.

Heptachlor is a constituent of technical grade chlordane, approximately 10 percent by weight. Heptachlor was used from 1953 to 1974 as a soil and seed treatment to protect corn, small grains, and sorghum from pests. It was also used to control ants, cutworms, maggots, termites, and other pests in agriculture and in the home. The only commercial use of heptachlor products still permitted is fire ant control in power transformers. In addition, homeowner's use of existing stocks of heptachlor-containing termite control products is also allowed.

Use classes: Insecticides.

Pharmacological actions

  • Insecticides
  • Soil Pollutants

Roles

  • GABA-gated chloride channel antagonist
  • agrochemical
  • antagonist
  • antibacterial agent
  • antifungal agent
  • antimicrobial agent
  • biophysical role
  • environmental contaminant
  • membrane transport modulator
  • persistent organic pollutant

Functional uses

  • Biocide

How it is made

By chlorination of the adduct of hexachlorocyclopentadiene & cyclopentadiene, using sulfonyl chloride in presence of benzoyl peroxide (british patent 618432), or chlorine in the dark & the presence of fuller's earth (us patent 2576666) ...

Regulatory status

Inventories, regulations and trade controls that list this substance

Persistent organic pollutant

Heptachlor is prohibited on CompoundList. Listings, quotes and messages are disabled. This page is kept for information only.

Listing and enquiries are not allowed for this substance.

Reference: Stockholm Convention on Persistent Organic Pollutants, HS 2022 subheading 2903.82 (aldrin, chlordane and heptachlor)

Our policy on controlled substances

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 602-046-00-2

Health and food

  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Heptachlor, Ref no: 1098, Annex ref: II/1098

Agriculture and environment

  • Stockholm Convention persistent organic pollutant

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2903.82Exact HS code

Aldrin (ISO), chlordane (ISO) and heptachlor (ISO)

World exports in 2024
$393K
+80.3% vs 2023, imports $115K
2019 to 2024
Top exporters
  1. United States55.2%
  2. Germany34.1%
  3. Canada7.6%
Top importers
  1. Germany37.7%
  2. India * partner reported10.0%
  3. Switzerland * partner reported8.4%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Heptachlor is indicative (it was matched by name in the HS nomenclature). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Heptachlor?

Heptachlor is a cyclodiene organochlorine insecticide that is 3a,4,7,7a-tetrahydro-1H-4,7-methanoindene substituted by chlorine atoms at positions 1, 4, 5, 6, 7, 8 and 8. Formerly used to kill termites, ants and other insects in agricultural and domestic situations.

What is the CAS number of Heptachlor?

The CAS registry number of Heptachlor is 76-44-8.

What is the molecular formula and weight of Heptachlor?

The molecular formula of Heptachlor is C10H5Cl7 and its molar mass is 373.32 g/mol.

What is Heptachlor used for?

Insecticide for control of cotton boll weevil (Former use). Termite control, seed/seed furrow treatment, wood treatment (Former use). Insecticide formerly used in the control of certain soil-inhabiting insects. Heptachlor is a constituent of technical grade chlordane, approximately 10 percent by weight.

Is Heptachlor hazardous?

Heptachlor carries the GHS signal word "Danger". Main hazards: toxic if swallowed, toxic in contact with skin, suspected of causing cancer. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Heptachlor?

Heptachlor is usually classified under HS code 290382 (Aldrin (ISO), chlordane (ISO) and heptachlor (ISO)). This is indicative, confirm it with your customs broker before shipping.

Can I buy Heptachlor on CompoundList?

No. Heptachlor is on our prohibited list, so listings, quotes and messages for it are disabled. This page is kept for information only.

Guides for buyers

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

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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