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Insecticides and acaricides

Methyl trithion

Also known as Methyl Carbophenothion, Carbophenothion-methyl, Carbophenothion methyl

CAS 953-17-3Formula C9H12ClO2PS3Molar mass 314.82 g/mol
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Hazardous to the environment
Get quotes Safety data
Methyl trithion chemical structure, C9H12ClO2PS3, CAS 953-17-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
953-17-3
Formula
C9H12ClO2PS3
Appearance
Light yellow to amber liq
Solubility
SOLUBILITY AT ROOM TEMPERATURE IS APPROXIMATELY 1 MG/L WATER
HS code
293090
Category
Insecticides and acaricides
Illustrative photo, blue HDPE drums with a pale yellow liquid sample in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Methyl trithion?

Plain description, key identifiers and synonyms

Methyl trithion is a chemical substance with the molecular formula C9H12ClO2PS3 and a molar mass of 314.82 g/mol. Its CAS registry number is 953-17-3. The IUPAC name is (4-chlorophenyl)sulfanylmethylsulfanyl-dimethoxy-sulfanylidene-λ5-phosphane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4-chlorophenyl)sulfanylmethylsulfanyl-dimethoxy-sulfanylidene-λ5-phosphane
CAS number
953-17-3 CAS number cross-checked
Molecular formula
C9H12ClO2PS3
UNII
X08H286BAN
InChIKey
OUCCVXVYGFBXSV-UHFFFAOYSA-N
InChI
InChI=1S/C9H12ClO2PS3/c1-11-13(14,12-2)16-7-15-9-5-3-8(10)4-6-9/h3-6H,7H2,1-2H3
SMILES (canonical and isomeric)
COP(=S)(OC)SCSC1=CC=C(C=C1)Cl

Synonyms

  • Methyl Carbophenothion
  • Carbophenothion-methyl
  • Carbophenothion methyl
  • Tri-Me
  • Trithion-methyl
  • Geigy G-29288
  • Methylcarbophenothion
  • Stauffer R-1492
  • ENT 25,599
  • ENT 25586
  • O,O-Dimethylthiophosphoric acid p-chlorophenyl ester
  • Dimethyl p-chlorophenylthiomethyl dithiophosphate
  • Phosphorodithioic acid, S-(((4-chlorophenyl)thio)methyl) O,O-dimethyl ester
  • Methanethiol, ((p-chlorophenyl)thio)-, S-ester with O,O-dimethyl phosphorodithioate
  • O,O-Dimethyl-S-(p-chlorophenylthiomethyl)phosphorodithioate
  • S-(((p-Chlorophenyl)thio)methyl) O,O-dimethyl phosphorodithioate
  • Phosphorodithioic acid, S-(((p-chlorophenyl)thio)methyl) O,O-dimethyl ester
  • Phosphorodithioic acid, S-[[(4-chlorophenyl)thio]methyl] O,O-dimethyl ester
  • S-[[(p-Chlorophenyl)thio]methyl] O,O-dimethyl phosphorodithioate
  • Phosphorodithioic acid, S-[[(p-chlorophenyl)thio]methyl] O,O-dimethyl ester
  • Methyltrithion
  • Methyl Trithion (Technical Grade)
  • Stauffer R 1492
  • S-(((4-Chlorophenyl)thio)methyl) O,O-dimethylphosphorodithioate
  • (4-chlorophenyl)sulfanylmethylsulfanyl-dimethoxy-sulfanylidene-lambda5-phosphane
Show all 34 synonyms
  • Dimethyl (((p-chlorophenyl)thio)methyl) dithiophosphate
  • Dimethyl [[(p-chlorophenyl)thio]methyl] dithiophosphate
  • O,O-Dimethyl-S-(((p-chlorophenyl)thio)methyl)phosphorodithioate
  • O,O-Dimethyl-S-[[(p-chlorophenyl)thio]methyl]phosphorodithioate
  • Phosphorodithioic acid,O-dimethyl ester
  • Carbophenothion-methyl 100 microg/mL in Acetonitrile
  • Methanethiol, S-ester with O,O-dimethyl phosphorodithioate
  • S-([(4-Chlorophenyl)sulfanyl]methyl) O,O-dimethyl dithiophosphate #
  • S-{[(4-Chlorophenyl)sulfanyl]methyl} O,O-dimethyl phosphorodithioate

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
Light yellow to amber liqexp.
Odour
MODERATE MERCAPTAN-LIKE ODORexp.
Solubility
SOLUBILITY AT ROOM TEMPERATURE IS APPROXIMATELY 1 MG/L WATERexp.

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
314.82 g/molcalc.
Exact mass
313.9426 Dacalc.
LogP (octanol/water)
4.64calc.
Topological polar surface area
18.46 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
6calc.
Heavy atoms
16calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.33calc.
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

  • H301Toxic if swallowed.
  • H311Toxic in contact with skin.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (14)
  • 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.
  • 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.

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

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Methyl trithion price

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Uses and applications

What the substance is used for, by industry and function

For Carbophenothion-methyl (USEPA/OPP PC code 058101) there are 0 labels match.

Formerly an insecticide and acaricide on cotton.

General purpose contact insecticides used on fruit, vegetables and forage. (Former use).

Use classes: Insecticides.

How it is made

Reaction of p-chloromethylchlorophenyl sulfide with sodium dimethyl phosphorodithioate

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 015-132-00-4

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Methyl trithion, based on the data on this page

What is Methyl trithion?

Methyl trithion is a chemical substance with the molecular formula C9H12ClO2PS3 and a molar mass of 314.82 g/mol. Its CAS registry number is 953-17-3. The IUPAC name is (4-chlorophenyl)sulfanylmethylsulfanyl-dimethoxy-sulfanylidene-λ5-phosphane.

What is the CAS number of Methyl trithion?

The CAS registry number of Methyl trithion is 953-17-3.

What is the molecular formula and weight of Methyl trithion?

The molecular formula of Methyl trithion is C9H12ClO2PS3 and its molar mass is 314.82 g/mol.

What is Methyl trithion used for?

For Carbophenothion-methyl (USEPA/OPP PC code 058101) there are 0 labels match. Formerly an insecticide and acaricide on cotton. General purpose contact insecticides used on fruit, vegetables and forage. (Former use). Use classes: Insecticides.

Is Methyl trithion hazardous?

Methyl trithion carries the GHS signal word "Danger". Main hazards: toxic if swallowed, 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 Methyl trithion?

Methyl trithion is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Methyl trithion?

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What is the price of Methyl trithion?

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Guides for buyers

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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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