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Insecticides and acaricides

Tetrachlorvinphos

Also known as Stirofos, Gardona, Stirophos

CAS 22248-79-9Formula C10H9Cl4O4PMolar mass 365.96 g/molEC 213-506-3
GHS signal word: Warning. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 5 suppliers listed
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Tetrachlorvinphos chemical structure, C10H9Cl4O4P, CAS 22248-79-9
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Tan to brown crystalline solid
Melting point
97 to 98
Density
Bulk density 50-55 lb/cu ft
Solubility
In water, 11 mg/L at 20 °C
HS code
291990
Category
Insecticides and acaricides
Illustrative photo, closed jumbo bulk bags in a warehouse in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Tetrachlorvinphos?

Plain description, key identifiers and synonyms

Tetrachlorvinphos is a dialkyl phosphate, an organochlorine insecticide, an organophosphate insecticide, a trichlorobenzene and an alkenyl phosphate. It has a role as an acaricide, an agrochemical, an EC 3.1.1.8 (cholinesterase) inhibitor and an EC 3.1.1.7 (acetylcholinesterase) inhibitor. It is functionally related to a 1-phenylethenol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[(Z)-2-chloro-1-(2,4,5-trichlorophenyl)ethenyl] dimethyl phosphate
CAS number
22248-79-9 CAS number cross-checkedOther or deprecated CAS: 961-11-5
EC numbers
213-506-3, 244-865-4
Molecular formula
C10H9Cl4O4P
UNII
DM33MW89QU
InChIKey
UBCKGWBNUIFUST-YHYXMXQVSA-N
InChI
InChI=1S/C10H9Cl4O4P/c1-16-19(15,17-2)18-10(5-11)6-3-8(13)9(14)4-7(6)12/h3-5H,1-2H3/b10-5-
Canonical SMILES
COP(=O)(OC)OC(=CCl)c1cc(Cl)c(Cl)cc1Cl
Isomeric SMILES
COP(=O)(OC)O/C(=C\Cl)/C1=CC(=C(C=C1Cl)Cl)Cl

Synonyms

  • Stirofos
  • Gardona
  • Stirophos
  • Rabon
  • Dietreen
  • Gardcide
  • Rabond
  • Vinfos
  • CVMP
  • Debantic
  • Stitifos
  • Appex
  • Tetrachlorvinfos
  • Dust M
  • (Z)-2-Chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl phosphate
  • Shell SD 8447
  • ENT 25,841
  • SD 8447
  • Phosphoric acid, 2-chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl ester, (Z)-
  • (1Z)-2-chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl phosphate
  • Phosphoric acid, (1Z)-2-chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl ester
  • (Z)-2-Chloro-1-(2,4,5-trichlorophenyl)ethenyl dimethyl phosphate
  • Phosphoric acid, 2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl ester, (Z)-
  • Dimethyl-1-(2,4,5-trichlorophenyl)-2-chlorovinyl phosphate
  • Dimethyl 2,4,5-trichloro-alpha-(chloromethylene)benzyl phosphate
Show all 37 synonyms
  • 2,4,5-Trichloro-alpha-(chloromethylene)benzyl alcohol, dimethyl phosphate
  • 2-Chloro-1-(2,4,5-trichlorophenyl)vinyl phosphoric acid dimethyl ester
  • Gardona (cis-
  • Tetrachlorvinphos, z-
  • Benzyl alcohol, 2,4,5-trichloro-alpha-(chloromethylene)-, dimethyl phosphate
  • IPO 8
  • Phosphoric acid, 2-chloro-1-(2,4,5-trichlorophenyl)vinyl dimethyl ester
  • Z-Tetrachlorvinphos
  • (Z)-Tetrachlorvinphos
  • cis-Gardona
  • Gardona (cis-isomer)
  • (Z)-Tetrachlorovinphos

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 to brown crystalline solidexp.
Odour
Mild chemical odor. /Gardona/exp.
Melting point
97 to 98exp.
Density
Bulk density 50-55 lb/cu ftexp.
Solubility
In water, 11 mg/L at 20 °Cexp.
Vapour pressure
4.20 × 10⁻⁸ 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
365.96 g/molcalc.
Exact mass
363.8993 Dacalc.
LogP (octanol/water)
5.6calc.
Topological polar surface area
44.76 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
5calc.
Heavy atoms
19calc.
Rings
1calc.
Aromatic rings
1calc.
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, 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
Warning
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H332Harmful if inhaled.
  • H341Suspected of causing genetic defects.
  • 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.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P362 + P364Take off 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

Tetrachlorvinphos suppliers

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Where suppliers are based

5 suppliers in 3 countries

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Tetrachlorvinphos 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

Organophosphate insecticide. It is currently used as a dermal and feed-through (oral) larvicide in cattle, hogs, goats, and horses, in cattle ear tags to control flies in cattle feedlots, in poultry dust boxes to control poultry mites. It is used to control nuisance and public health pests (flies) in and around refuse sites, recreational areas, and for general outdoor treatment.

Control of ticks and fleas on pets and pet sleeping areas and in collars and shampoos for direct treatment of pets.

The additive 2-chloro-1-(2,4,5-trichlorophenyl) vinyl dimethylphosphate may be safely used in accordance with the following prescribed conditions: (a) ... used as a feed additive in feed of beef, dairy cattle, and horses at 0.00015 lb (0.07 g) and swine at 0.00011 lb (0.05 g)/100 lb/ of bw/day, (b) ... used for control of fecal flies on manure of treated cattle, horses, and swine. (c) to assure safe use of the additive, the label and labeling of pesticide formulation containing the feed additive shall conform to the label and labeling registered by the US EPA.

Use classes: Insecticides.

Pharmacological actions

  • Cholinesterase Inhibitors
  • Insecticides

Roles

  • acaricide
  • agrochemical
  • enzyme inhibitor
  • pesticide

Functional uses

  • Biocide

Pharmacology

Stirofos is a synthetic alkenyl phosphate, dialkyl phosphate, trichlorobenzene compound, and organophosphate acetylcholinesterase inhibitor that is used as a pesticide. It is characterized as a colorless or off-white crystalline solid, and exposure occurs by inhalation, ingestion, or contact.

How it is made

Reaction of 2,2,2',4',5'-pentachloroacetophenone with trimethyl phosphite

Prepn of active Z-isomer: Philips, Ward, Ramsey, US Patents 3,102,842 & 3,553,279 (1963,1971 both to Shell)

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 Tetrachlorvinphos is traded under.

HS 2919.90Indicative HS code

Phosphoric, and their salts, including lactophosphates, their halogenated, sulphonated, nitrated…

World exports in 2024
$940M
−0.7% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China55.6%
  2. Germany10.6%
  3. Italy6.2%
Top importers
  1. United States15.8%
  2. South Korea10.1%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Tetrachlorvinphos?

Tetrachlorvinphos is a dialkyl phosphate, an organochlorine insecticide, an organophosphate insecticide, a trichlorobenzene and an alkenyl phosphate. It has a role as an acaricide, an agrochemical, an EC 3.1.1.8 (cholinesterase) inhibitor and an EC 3.1.1.7 (acetylcholinesterase) inhibitor.

What is the CAS number of Tetrachlorvinphos?

The CAS registry number of Tetrachlorvinphos is 22248-79-9. Other or deprecated CAS numbers: 961-11-5.

What is the molecular formula and weight of Tetrachlorvinphos?

The molecular formula of Tetrachlorvinphos is C10H9Cl4O4P and its molar mass is 365.96 g/mol.

What is Tetrachlorvinphos used for?

Organophosphate insecticide. It is currently used as a dermal and feed-through (oral) larvicide in cattle, hogs, goats, and horses, in cattle ear tags to control flies in cattle feedlots, in poultry dust boxes to control poultry mites.

Is Tetrachlorvinphos hazardous?

Tetrachlorvinphos carries the GHS signal word "Warning". Main hazards: harmful if swallowed, harmful in contact with skin, harmful if inhaled. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tetrachlorvinphos?

Tetrachlorvinphos is usually classified under HS code 291990 (Phosphoric esters and their salts, including lactophosphates, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tetrachlorvinphos?

CompoundList lists 5 suppliers of Tetrachlorvinphos in United States, Canada and China. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Tetrachlorvinphos?

Suppliers quote Tetrachlorvinphos 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 Tetrachlorvinphos

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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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