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Rodenticides, nematicides and other pesticides

Fensulfothion

Also known as Dasanit, Daconit, Terracur P

CAS 115-90-2Formula C11H17O4PS2Molar mass 308.36 g/molEC 204-114-3
GHS signal word: Danger. Pictograms: Acute toxicity (severe), Hazardous to the environment 1 supplier listed
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Fensulfothion chemical structure, C11H17O4PS2, CAS 115-90-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Brown liquid
Boiling point
137.8 to 141.1
Density
Relative density (water = 1): 1.202
Solubility
WATER: 1.54 G/L @ 25 °C
HS code
293090
Category
Rodenticides, nematicides and other pesticides
UN number
UN 2810
Illustrative photo, blue HDPE drums with a dark liquid sample in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Fensulfothion?

Plain description, key identifiers and synonyms

Fensulfothion is a sulfoxide, an organothiophosphate insecticide and an organic thiophosphate. It has a role as a nematicide, an agrochemical, an avicide and an EC 3.1.1.7 (acetylcholinesterase) inhibitor. It is functionally related to a 4-(methylsulfinyl)phenol.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
diethoxy-(4-methylsulfinylphenoxy)-sulfanylidene-λ5-phosphane
CAS number
115-90-2 CAS number cross-checked
EC number
204-114-3
Molecular formula
C11H17O4PS2
UNII
VB39B105PO
MDL number
MFCD00055487
InChIKey
XDNBJTQLKCIJBV-UHFFFAOYSA-N
InChI
InChI=1S/C11H17O4PS2/c1-4-13-16(17,14-5-2)15-10-6-8-11(9-7-10)18(3)12/h6-9H,4-5H2,1-3H3
SMILES (canonical and isomeric)
CCOP(=S)(OCC)OC1=CC=C(C=C1)S(=O)C

Synonyms

  • Dasanit
  • Daconit
  • Terracur P
  • Chemagro 25141
  • Bayer 25141
  • VUAgT 96
  • VUAgT 108
  • BAY 25141
  • OMS 37
  • O,O-Diethyl O-p-(methylsulfinyl)phenyl thiophosphate
  • ENT 24,945
  • O,O-Diethyl O-4-methylsulphinylphenyl phosphorothioate
  • Phosphorothioic acid, O,O-diethyl O-(4-(methylsulfinyl)phenyl) ester
  • O,O-Diethyl O-(p-(methylsulfinyl)phenyl) phosphorothioate
  • O,O-Diethyl O-(4-(methylsulfinyl)phenyl) phosphorothioate
  • Diethyl p-methylsulfinylphenyl thiophosphate
  • Phosphorothioic acid, O,O-diethyl O-[4-(methylsulfinyl)phenyl] ester
  • Phenol, p-(methylsulfinyl)-, O-ester with O,O-diethyl phosphorothioate
  • p,O-Diethyl O-p-(methylsulfinyl)phenyl thiophosphate
  • O,O-Diaethyl-O-(4-methylsulfinyl-phenyl)-thionophosphat
  • O,O-Diaethyl-O-4-methylsulfinyl-phenyl-monothiophosphat
  • O,O-diethyl O-[4-(methanesulfinyl)phenyl] phosphorothioate
  • Phosphorothioic acid, O,O-diethyl O-(p-(methylsulfinyl)phenyl) ester
  • O,O-Diethyl O-[p-(Methylsulfinyl)phenyl] phosphorothioate
  • O,O-diethyl O-(4-(methanesulfinyl)phenyl) phosphorothioate
Show all 31 synonyms
  • O,O-Diethyl O-[4-(methylsulfinyl)phenyl] phosphorothioate
  • Phosphorothioic acid, O,O-diethyl O-[p-(methylsulfinyl)phenyl] ester
  • O,O-Diethyl o-(P-methylsulfinyl)phenyl)phosphorothioate
  • o,o-Diethyl o-[4-(methylsulfinyl)phenyl] thiophosphate
  • Bayer S767
  • Xdnbjtqlkcijbv-uhfffaoysa-

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
Brown liquidexp.
Boiling point
137.8 to 141.1exp.
Density
Relative density (water = 1): 1.202exp.
Solubility
WATER: 1.54 G/L @ 25 °Cexp.
Vapour pressure
5.0 × 10⁻⁵ 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
308.36 g/molcalc.
Exact mass
308.0306 Dacalc.
LogP (octanol/water)
3.1calc.
Topological polar surface area
44.76 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
7calc.
Heavy atoms
18calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.46calc.
Formal charge
0calc.
Stereocentres
1calc.
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
142WNFPA 704 rating

Hazard statements

  • H300Fatal if swallowed.
  • H310Fatal 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.
UN number
UN 2810
Transport hazard class
6.1
Packing group
I

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

Fensulfothion suppliers

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Where suppliers are based

1 supplier in 1 country

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Fensulfothion 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

The active ingredient is no longer contained in any registered pesticide products ... "cancelled.".

Insecticide against soil insects, mosquito larvicide.

Insecticide & nematocide principally for tobacco, corn, and various other crops.

Use classes: Insecticides.

Roles

  • agrochemical
  • avicide
  • enzyme inhibitor
  • nematicide
  • pesticide

How it is made

P-Methylmercaptophenol + O,O-diethyl phosphorochlorothioate + hydrogen peroxide (dehydrochlorination/oxidation).

By condensation of o,o-diethylphosphorochloridothioate (i) with 4-methyl-sulfinyl-1-hydroxybenzene in methanol in presence of acid-combining reagent or by condensation of (i) with 4-methylthiohydroxybenzene in analogous manner & oxidn of resulting ester with hydrogen peroxide.

Homeyer, schrader, belgian patent 666,012 (1965 to bayer), ca 64 20555f (1966).

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 015-090-00-7

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Fensulfothion 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 Fensulfothion is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Fensulfothion?

Fensulfothion is a sulfoxide, an organothiophosphate insecticide and an organic thiophosphate. It has a role as a nematicide, an agrochemical, an avicide and an EC 3.1.1.7 (acetylcholinesterase) inhibitor. It is functionally related to a 4-(methylsulfinyl)phenol.

What is the CAS number of Fensulfothion?

The CAS registry number of Fensulfothion is 115-90-2.

What is the molecular formula and weight of Fensulfothion?

The molecular formula of Fensulfothion is C11H17O4PS2 and its molar mass is 308.36 g/mol.

What is Fensulfothion used for?

The active ingredient is no longer contained in any registered pesticide products ... "cancelled.". Insecticide against soil insects, mosquito larvicide. Insecticide & nematocide principally for tobacco, corn, and various other crops. Use classes: Insecticides.

Is Fensulfothion hazardous?

Fensulfothion carries the GHS signal word "Danger". Main hazards: fatal if swallowed, fatal 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 Fensulfothion?

Fensulfothion 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 Fensulfothion?

CompoundList lists 1 supplier of Fensulfothion in Canada. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Fensulfothion?

Suppliers quote Fensulfothion 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 Fensulfothion

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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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