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Insecticides and acaricides

Fenson

Also known as Fensone, Murvesco, 4-Chlorophenyl benzenesulfonate

CAS 80-38-6Formula C12H9ClO3SMolar mass 268.72 g/molEC 201-274-6
GHS signal word: Warning. Pictograms: Harmful or irritant, Hazardous to the environment
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Fenson chemical structure, C12H9ClO3S, CAS 80-38-6
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Colorless crystals
Melting point
62 °C
Density
1.33
Solubility
SPARINGLY SOLUBLE IN WATER /&/ ORGANIC POLAR AND AROMATIC SOLVENTS
HS code
290410
Category
Insecticides and acaricides
Illustrative photo, colourless crystals in an open woven sack in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Fenson?

Plain description, key identifiers and synonyms

Fenson is an arenesulfonic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(4-chlorophenyl) benzenesulfonate
CAS number
80-38-6 CAS number cross-checked
EC number
201-274-6
Molecular formula
C12H9ClO3S
UNII
DFC2HB4I0K
MDL number
MFCD00055414
InChIKey
SPJOZZSIXXJYBT-UHFFFAOYSA-N
InChI
InChI=1S/C12H9ClO3S/c13-10-6-8-11(9-7-10)16-17(14,15)12-4-2-1-3-5-12/h1-9H
SMILES (canonical and isomeric)
C1=CC=C(C=C1)S(=O)(=O)OC2=CC=C(C=C2)Cl

Synonyms

  • Fensone
  • Murvesco
  • 4-Chlorophenyl benzenesulfonate
  • Phenizon
  • PCPBS
  • Aracid
  • Ovicide Seppic
  • CPBS
  • Fenizon
  • Benzenesulfonic acid, 4-chlorophenyl ester
  • p-Chlorophenyl benzenesulfonate
  • Benzenesulfonic acid, p-chlorophenyl ester
  • p-Chlorophenyl benzenesulphonate
  • 4-Chlorophenyl benzenesulphonate
  • (4-Chloor-fenyl)-benzeen-sulfonaat
  • ENT 4,585
  • (4-Chlor-phenyl)-benzolsulfonat
  • (4-Cloro-fenil)-benzol-solfonato
  • PCPB
  • para-Chlorophenyl benzenesulfonate
  • Benzenesulfonate de 4-chlorophenyle
  • p-Chlorofenylester kyseliny benzenesulfonove
  • (4-chlorophenyl) benzenesulfonate
  • p-Chlorofenylester kyseliny benzensulfonove
  • PCI
Show all 28 synonyms
  • Fenson 10 |Ig/mL in Cyclohexane
  • Aracidbenzenesulfonate de 4-chlorophenyle
  • Benzenesulfonic acid,4-chlorophenyl ester

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.
Melting point
62 °Cexp.
Density
1.33exp.
Solubility
SPARINGLY SOLUBLE IN WATER /&/ ORGANIC POLAR AND AROMATIC SOLVENTSexp.

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
268.72 g/molcalc.
Exact mass
267.9961 Dacalc.
LogP (octanol/water)
3.11calc.
Topological polar surface area
43.37 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
17calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
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, O=S(=O)(Oc1ccccc1)c1ccccc1

O=S(=O)(Oc1ccccc1)c1ccccc1

2 rings, 16 atoms, the Benzenesulfonic acid, phenyl ester ring system.

1,459 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
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H319Causes serious eye irritation.
  • H411Toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • 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 + P317If swallowed: Get medical help.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P330Rinse mouth.
  • P337 + P317If eye irritation persists: Get medical help.
  • P391Collect spillage.
  • 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

Fenson suppliers

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Fenson 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

Acaricide.

Use classes: Acaricides.

How it is made

By interaction of benzene sulfonylchloride with p-chlorophenol.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 650-003-00-1

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2904.10Indicative HS code

Derivatives containing only sulpho groups, their salts and ethyl esters

World exports in 2024
$447M
−5.5% vs 2023, imports $498M
2019 to 2024
Top exporters
  1. Germany21.1%
  2. China15.2%
  3. United States11.5%
Top importers
  1. United States8.5%
  2. China8.4%
  3. Sweden6.8%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Fenson?

Fenson is an arenesulfonic acid.

What is the CAS number of Fenson?

The CAS registry number of Fenson is 80-38-6.

What is the molecular formula and weight of Fenson?

The molecular formula of Fenson is C12H9ClO3S and its molar mass is 268.72 g/mol.

What is Fenson used for?

Acaricide. Use classes: Acaricides.

Is Fenson hazardous?

Fenson carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes serious eye irritation, toxic to aquatic life with long lasting effects. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Fenson?

Fenson is usually classified under HS code 290410 (Derivatives containing only sulpho groups, their salts and ethyl esters). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Fenson?

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What is the price of Fenson?

Suppliers quote Fenson 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 Fenson

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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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