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Insecticides and acaricides

Iodofenphos

Also known as Jodfenphos, Alfacron, Iodenphos

CAS 18181-70-9Formula C8H8Cl2IO3PSMolar mass 413.00 g/molEC 242-069-1
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Hazardous to the environment
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Iodofenphos chemical structure, C8H8Cl2IO3PS, CAS 18181-70-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals
Melting point
72 to 73
Density
2.0 gm/cm³ @ 20 °C
Solubility
AT 20 °C: <2 MG/L WATER, 450 G/L ACETONE, TOLUENE, 810 G/L DICHLOROMETHANE, 30 G/L METHA…
HS code
292019
Category
Insecticides and acaricides
Illustrative photo, colourless crystals beside a jumbo bulk bag in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Iodofenphos?

Plain description, key identifiers and synonyms

Iodofenphos is an organic thiophosphate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2,5-dichloro-4-iodophenoxy)-dimethoxy-sulfanylidene-λ5-phosphane
CAS number
18181-70-9 CAS number cross-checked
EC number
242-069-1
Molecular formula
C8H8Cl2IO3PS
UNII
SME6G1846X
InChIKey
LFVLUOAHQIVABZ-UHFFFAOYSA-N
InChI
InChI=1S/C8H8Cl2IO3PS/c1-12-15(16,13-2)14-8-4-5(9)7(11)3-6(8)10/h3-4H,1-2H3
SMILES (canonical and isomeric)
COP(=S)(OC)OC1=CC(=C(C=C1Cl)I)Cl

Synonyms

  • Jodfenphos
  • Alfacron
  • Iodenphos
  • Iodofenfos
  • Iodophos
  • Nuvanol N
  • Trix
  • Iodophenphos
  • Monocron 9491
  • O-(2,5-Dichloro-4-iodophenyl) O,O-dimethyl phosphorothioate
  • ENT 27408
  • O,O-Dimethyl-O-2,5-dichloro-4-iodophenyl thiophosphate
  • O,O-Dimethyl-O-(2,5-dichlor-4-jodphenyl)-monothiophosphat
  • phosphorothioic acid O-(2,5-dichloro-4-iodophenyl) O,O-dimethyl ester
  • O,O-dimethyl-O-(2,5-dichloro-4-iodophenyl)thiophosphate
  • Compound C-9491
  • Ciba-Geigy C-9491
  • Phosphorothioic acid, O-(2,5-dichloro-4-iodophenyl) O,O-dimethyl ester
  • O,O-Dimethyl-O-(2,5-dichlor-4-jodphenyl)-thionophosphat
  • Elocril
  • Ciba C-9491
  • Iodfenphos
  • Iodofenophos
  • O-(2,5-Dichloro-4-iodophenyl)-O,O-dimethyl phosphorothioate
  • Phenol, 3,4-dichloro-, O-ester with O-methyl methylphosphoramidothioate
Show all 29 synonyms
  • Ciba 9491
  • CIBA C 9491
  • OMS 1211
  • (2,5-dichloro-4-iodophenoxy)-dimethoxy-sulfanylidene-lambda5-phosphane

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
Colorless crystalsexp.
Odour
MILD ODORexp.
Melting point
72 to 73exp.
Density
2.0 gm/cm³ @ 20 °Cexp.
Solubility
AT 20 °C: <2 MG/L WATER, 450 G/L ACETONE, TOLUENE, 810 G/L DICHLOROMETHANE, 30 G/L METHANOL, OCTAN-1-OLexp.
Vapour pressure
8.25 × 10⁻⁷ mm Hg at 20 °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
413.00 g/molcalc.
Exact mass
411.8354 Dacalc.
LogP (octanol/water)
4.49calc.
Topological polar surface area
27.69 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
4calc.
Heavy atoms
16calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.25calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)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, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 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)
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H311Toxic in contact with skin.
  • H400Very toxic to aquatic life.
Precautionary statements (12)
  • 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.
  • P302 + P352If on skin: Wash with plenty of water.
  • P316Get emergency medical help immediately.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • 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.

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

Iodofenphos suppliers

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Iodofenphos 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

A contact & stomach insecticide & acaricide for control of flies & mosquitoes (adults & larvae) in public hygiene, indoor pests such as ants, bedbugs, cockroaches, fleas & warehouse pests, also recommended for farm use, especially in poultry houses against mealworm beetles, mites & flies.

For crop protection, 500-1500 g ai/ha is effective against wide range of coleopterous, dipterous & lepidopterous pests, persisting for 1-2 weeks.

It gives persistent control of ... Gnats & trials are (being) conducted (for effectiveness for) insects on animals.

Insecticide that controls flies, mosquitoes, fleas, bedbugs, beetles, moths, cockroaches, mosquito larvae, poultry mites, ticks.

Use classes: Insecticides.

How it is made

By reaction of o,o-dimethyl phosphorochloridothioate with sodium 2,5-dichloro-4-iodophenate.

1,2,4-trichlorobenzene + O,O-dimethyl phosphorochlorothioate (ring iodination/dehydrochlorination)

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 Iodofenphos is traded under.

HS 2920.19Indicative HS code

Thiophosphoric esters (phosphorothioates) and their salts, their halogenated…

World exports in 2024
$131M
+2.1% vs 2023, imports $115M
2019 to 2024
Top exporters
  1. China59.7%
  2. Japan17.6%
  3. Germany9.1%
Top importers
  1. Brazil16.0%
  2. United States13.3%
  3. India * partner reported8.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Iodofenphos?

Iodofenphos is an organic thiophosphate.

What is the CAS number of Iodofenphos?

The CAS registry number of Iodofenphos is 18181-70-9.

What is the molecular formula and weight of Iodofenphos?

The molecular formula of Iodofenphos is C8H8Cl2IO3PS and its molar mass is 413.00 g/mol.

What is Iodofenphos used for?

A contact & stomach insecticide & acaricide for control of flies & mosquitoes (adults & larvae) in public hygiene, indoor pests such as ants, bedbugs, cockroaches, fleas & warehouse pests, also recommended for farm use, especially in poultry houses against mealworm beetles, mites & flies.

Is Iodofenphos hazardous?

Iodofenphos carries the GHS signal word "Danger". Main hazards: toxic in contact with skin, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Iodofenphos?

Iodofenphos is usually classified under HS code 292019 (Thiophosphoric esters (phosphorothioates) and their salts, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Iodofenphos?

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What is the price of Iodofenphos?

Suppliers quote Iodofenphos 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 Iodofenphos

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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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