3,5-Dichlorophenyl isothiocyanate
3,5-Dichlorophenyl isothiocyanate (CAS: 6590-93-8) is an organic compound with the linear formula Cl₂C₆H₃NCS and a molecular weight of 204.08 g/mol. This chemical serves as a valuable building block in organic synthesis. Its reactivity makes it useful in the preparation of various organic molecules and intermediates within chemical research and development settings.
- Synonyms
- Cl2C6H3NCS3,5-Dichlorophenyl isothiocyanate

Organic Synthesis Intermediate
Utilised as a key intermediate in the synthesis of more complex organic molecules. Its isothiocyanate group readily participates in addition reactions with nucleophiles, enabling the formation of thioureas, heterocycles, and other functionalised compounds.
Chemical Research Reagent
Employed in laboratory research for the development of novel chemical entities. It is a useful reagent for introducing the 3,5-dichlorophenyl moiety into target molecules.
Building Block for Heterocycles
A versatile building block for the construction of sulfur- and nitrogen-containing heterocyclic systems, which are important scaffolds in medicinal chemistry and materials science.
| Molecular weight | 204.08 |
|---|---|
| Linear formula | Cl2C6H3NCS |
| Assay | 98% |
| Boiling point | 274 °C(lit.) |
| Melting point | 47-50 °C(lit.) |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| 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 |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3335 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 22-26-36/37/39-45 |
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 3,5-Dichlorophenyl isothiocyanate used for?
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3,5-Dichlorophenyl isothiocyanate is primarily used as a building block and intermediate in organic synthesis and chemical research for creating more complex organic molecules and heterocyclic compounds.
What is the CAS number and formula for 3,5-Dichlorophenyl isothiocyanate?
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The CAS number is 6590-93-8 and the linear formula is Cl₂C₆H₃NCS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,5-Dichlorophenyl isothiocyanate with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 3,5-Dichlorophenyl isothiocyanate be handled?
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Due to its corrosive nature (H314), handle with extreme care. Use appropriate personal protective equipment, including eyeshields, face shields, chemical-resistant gloves, and respiratory protection (N100 US/P3 EN143). Ensure adequate ventilation. Refer to the Safety Data Sheet for detailed handling instructions.
How is 3,5-Dichlorophenyl isothiocyanate packed and exported?
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As a global supplier and exporter of fine chemicals, Tech Serve Solutions ensures secure and compliant packaging for international shipment of 3,5-Dichlorophenyl isothiocyanate, adhering to all relevant regulations.
How can I request a sample or quote for 3,5-Dichlorophenyl isothiocyanate?
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To request a sample or obtain a quote for 3,5-Dichlorophenyl isothiocyanate, please contact our sales department through the website or by phone.
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