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Insecticides and acaricides

Phosfolan

Also known as Phospholan, Cyolane, Cyolane insecticide

CAS 947-02-4Formula C7H14NO3PS2Molar mass 255.30 g/molEC 213-423-2
GHS signal word: Danger. Pictograms: Acute toxicity (severe) 1 supplier listed
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Phosfolan chemical structure, C7H14NO3PS2, CAS 947-02-4
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Solid
Melting point
36.5 °C
Boiling point
410 °C
Solubility
SOL IN WATER, ACETONE, BENZENE, ETHANOL, CYCLOHEXANE, TOLUENE, SLIGHTLY SOL IN ETHER, SP…
HS code
293499
Category
Insecticides and acaricides
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Phosfolan?

Plain description, key identifiers and synonyms

Phosfolan is a phosphoric ester.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
N-diethoxyphosphoryl-1,3-dithiolan-2-imine
CAS number
947-02-4 CAS number cross-checked
EC number
213-423-2
Molecular formula
C7H14NO3PS2
UNII
CHJ98J84AY
MDL number
MFCD00128041
InChIKey
ILBONRFSLATCRE-UHFFFAOYSA-N
InChI
InChI=1S/C7H14NO3PS2/c1-3-10-12(9,11-4-2)8-7-13-5-6-14-7/h3-6H2,1-2H3
SMILES (canonical and isomeric)
CCOP(=O)(N=C1SCCS1)OCC

Synonyms

  • Phospholan
  • Cyolane
  • Cyolane insecticide
  • American cyanamid 47031
  • American cyanamide 47031
  • American cyanamid CL-47031
  • American cyanamid AC 47,031
  • OMS 646
  • Cyalane
  • Cyolan
  • ENT 25,830
  • AC 47031
  • CL 47031
  • EI 47031
  • 2-(Diethoxyphosphinylimino)-1,3-dithiolane
  • Diethyl 1,3-dithiolan-2-ylidenephosphoramidate
  • Phosphoramidic acid, 1,3-dithiolan-2-ylidene-, diethyl ester
  • (Diethoxyphosphinyl)dithioimidocarbonic acid cyclic ethylene ester
  • American cyanamide-47031
  • Cyclic ethylene p,p-diethyl phosphonodithioimidocarbonate
  • Cyclic ethylene(diethoxyphosphinothioyl)dithioimidocarbonate
  • Imidocarbonic acid, (diethoxyphosphinyl)dithio-, cyclic ethylene ester
  • Imidocarbonic acid, phosphonodithio-, cyclic ethylene P,P-diethyl ester
  • P,P-Diethyl cyclic ethylene ester of phosphonodithioimidocarbonic acid
  • 1,2-Ethanedithiol, cyclic ester with P,P-diethyl phosphonodithioimidocarbonate
Show all 35 synonyms
  • Phosphoramidic acid, N-1,3-dithiolan-2-ylidene-, diethyl ester
  • Imidocarbonic acid, phosphonodithio-, P,P-diethyl cyclic ethylene ester
  • 1,2-Ethanedithiol, cyclic S,S-ester with phosphonodithioimidocarbonic acid P,P-diethyl ester
  • ENT-25,830
  • Cyclic ethylene-P,P-diethyl phosphonodithioimidocarbonate
  • N-diethoxyphosphoryl-1,3-dithiolan-2-imine
  • diethyl (1,3-dithiolan-2-ylidene)phosphoramidate
  • Phospholan [ISO-French]
  • Cayolan
  • Cyolane cylan

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
Solidexp.
Melting point
36.5 °Cexp.
Boiling point
410 °Cexp.
Solubility
SOL IN WATER, ACETONE, BENZENE, ETHANOL, CYCLOHEXANE, TOLUENE, SLIGHTLY SOL IN ETHER, SPARINGLY SOL IN HEXANEexp.
Vapour pressure
0.0001 [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
255.30 g/molcalc.
Exact mass
255.0153 Dacalc.
LogP (octanol/water)
3calc.
Topological polar surface area
47.89 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
5calc.
Heavy atoms
14calc.
Rings
1calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.86calc.
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, N=C1SCCS1

N=C1SCCS1

1 ring, 6 atoms, the 1,3-Dithiolan-2-imine ring system.

30 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)

Hazard statements

  • H300Fatal if swallowed.
  • H310Fatal in contact with skin.
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.
  • 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.
  • 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

Phosfolan suppliers

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Where suppliers are based

1 supplier in 1 country

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Phosfolan price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Systemic insecticide, leaf-penetrating, for leaf-feeding larvae and other cotton insects. (Discontinued).

How it is made

By the reaction of 2-imino-1,3-dithiolan with diethyl phosphorochloridate.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 015-111-00-X

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Phosfolan?

Phosfolan is a phosphoric ester.

What is the CAS number of Phosfolan?

The CAS registry number of Phosfolan is 947-02-4.

What is the molecular formula and weight of Phosfolan?

The molecular formula of Phosfolan is C7H14NO3PS2 and its molar mass is 255.30 g/mol.

What is Phosfolan used for?

Systemic insecticide, leaf-penetrating, for leaf-feeding larvae and other cotton insects. (Discontinued).

Is Phosfolan hazardous?

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

What is the HS code of Phosfolan?

Phosfolan is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Phosfolan?

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

What is the price of Phosfolan?

Suppliers quote Phosfolan 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 Phosfolan

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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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