2-Chlorophenyl isothiocyanate
2-Chlorophenyl isothiocyanate (CAS: 2740-81-0, Formula: ClC6H4NCS) is a key organic building block with a molecular weight of 169.63. This compound is primarily utilised in chemical synthesis and research laboratories. Its isothiocyanate functional group makes it a valuable intermediate for creating more complex molecules, particularly in the development of novel compounds within the pharmaceutical and agrochemical sectors. TSS supplies this chemical with an assay of 98%.

Organic Synthesis Intermediate
Serves as a reactive intermediate in organic synthesis. The isothiocyanate moiety readily participates in addition reactions, enabling the construction of various heterocyclic compounds and functionalised molecules.
Pharmaceutical Research
Employed in the synthesis of potential drug candidates and biologically active compounds. Its structure can be incorporated into molecules designed to target specific biological pathways or receptors.
Agrochemical Development
Used as a building block in the research and development of new pesticides, herbicides, and fungicides. The compound's structure can contribute to the efficacy of agricultural chemical agents.
Materials Science
Investigated for potential applications in materials science, such as the synthesis of polymers or functional materials where the sulfur and nitrogen atoms can impart specific properties.
| Molecular weight | 169.63 |
|---|---|
| Linear formula | ClC6H4NCS |
| Assay | 98% |
| Boiling point | 260-262 °C(lit.) |
| Density | 1.299 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.6608(lit.) |

Hazard statements
- H302Harmful if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H332Harmful if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 2810 6.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 20/21/22-36/37/38 |
| Safety statements (S) | 26-27-28-36/37/39 |
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 2-Chlorophenyl isothiocyanate primarily used for?
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2-Chlorophenyl isothiocyanate is primarily used as an intermediate in organic synthesis, particularly in the development of pharmaceuticals, agrochemicals, and other fine chemicals. It is also utilised in research laboratories for chemical synthesis.
What is the CAS number and chemical formula for 2-Chlorophenyl isothiocyanate?
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The CAS number for 2-Chlorophenyl isothiocyanate is 2740-81-0, and its chemical formula is ClC6H4NCS.
What grade and purity does Tech Serve Solutions supply for 2-Chlorophenyl isothiocyanate?
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Tech Serve Solutions supplies 2-Chlorophenyl isothiocyanate with an assay of 98%. TSS does not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated in the specifications.
What are the key safety hazards associated with 2-Chlorophenyl isothiocyanate?
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2-Chlorophenyl isothiocyanate is classified as a Warning substance (GHS07). It is harmful if swallowed (H302), harmful in contact with skin (H312), causes skin irritation (H315), causes serious eye irritation (H319), and harmful if inhaled (H332), also potentially causing respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection, must be used.
How is 2-Chlorophenyl isothiocyanate packed and shipped?
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2-Chlorophenyl isothiocyanate is supplied by TSS in appropriate packaging suitable for chemical transport and is exported globally to meet research and industrial demands.
How can I request a quote or sample for 2-Chlorophenyl isothiocyanate?
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To request a quote or a sample of 2-Chlorophenyl isothiocyanate, please contact our sales team through the dedicated inquiry form on the Tech Serve Solutions website or call us directly.
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