Folpet
Folpet (CAS: 133-07-3), chemical formula C9H4Cl3NO2S, is a fungicide with a molecular weight of 296.56 g/mol. It is widely recognised for its broad-spectrum protective action against various fungal diseases affecting fruits, vegetables, and ornamental plants. Folpet functions by inhibiting spore germination and mycelial growth, making it a valuable component in integrated pest management programmes.
- IUPAC
- 2-(Trichloromethylsulfanyl)isoindole-1,3-dione
- Synonyms
- 2-(Trichloromethylsulfanyl)isoindole-1,3-dioneFolpetCaptaxFR 55FungitrolMerpanPhaltanThiophosgene imideTrichloromethylthioisoindoline dione

Fungicide for Crop Protection
Folpet is employed as a protectant fungicide to prevent a wide range of fungal diseases in agricultural settings. Its application helps safeguard crops such as grapes, tomatoes, and various fruits from common pathogens, ensuring yield quality and quantity.
Horticultural Applications
In horticulture, Folpet is used for the treatment of fungal infections on ornamental plants and in nurseries. It provides effective control against diseases that can compromise the aesthetic and commercial value of plants.
Analytical Standard
As a PESTANAL®, analytical standard, Folpet is utilised in laboratory settings for analytical and chromatographic purposes. This high-purity standard is essential for method development, validation, and quality control in environmental and food safety testing.
| Molecular weight | 296.56 |
|---|---|
| Empirical formula | C9H4Cl3NO2S |
| Grade | PESTANAL®, analytical standard |



Hazard statements
- H317May cause an allergic skin reaction
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H351Suspected of causing cancer
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20-36-40-43-50 |
| Safety statements (S) | 36/37-46-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Folpet used for?
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Folpet (CAS: 133-07-3) is primarily used as a broad-spectrum protectant fungicide in agriculture and horticulture to control fungal diseases on plants. It is also supplied as an analytical standard for laboratory use.
What are the CAS number and chemical formula for Folpet?
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The CAS number for Folpet is 133-07-3, and its chemical formula is C9H4Cl3NO2S.
What grade and purity does Tech Serve Solutions supply for Folpet?
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Tech Serve Solutions supplies Folpet as a PESTANAL®, analytical standard. Specific purity details are available on the product's Certificate of Analysis.
How should Folpet be handled safely?
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Folpet is classified with GHS symbols GHS07, GHS08, and GHS09, with a 'Warning' signal word. Hazard statements include H317, H319, H332, H351, and H400, indicating it may cause an allergic skin reaction, eye irritation, be harmful if inhaled, be suspected of causing cancer, and be very toxic to aquatic life. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and suitable respiratory protection, must be used. Always consult the Safety Data Sheet (SDS) before handling.
Is Folpet available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Folpet. Please contact us for export details.
How can I request a sample or quote for Folpet?
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To request a sample or quote for Folpet, please contact our sales department via the website or by phone, providing your specific requirements.
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