Ethyl isothiocyanate
Ethyl isothiocyanate (CAS: 542-85-8), a chemical compound with the formula C2H5NCS and a molecular weight of 87.14 g/mol, is a versatile organic building block. Characterised by its distinct thiocyanate structure, it plays a role in chemical synthesis and is identified as a phytochemical derived from sources such as Armoracia rusticana (Horseradish). This compound is primarily utilised in laboratory research and for the development of novel chemical entities.
- IUPAC
- Ethyl mustard oil

Chemical Synthesis
Ethyl isothiocyanate serves as a valuable reagent in organic synthesis. Its reactive isothiocyanate group allows for facile incorporation into various molecular structures, facilitating the creation of complex organic molecules.
Research and Development
Utilised in academic and industrial research settings, this compound is instrumental in exploring new synthetic pathways and developing novel compounds for various scientific disciplines. Its properties make it useful in cell biology and nutrition research.
Phytochemical Studies
As a compound found in plants like horseradish, Ethyl isothiocyanate is relevant in phytochemical research. It aids in the investigation of plant-derived compounds and their biological activities.
| Molecular weight | 87.14 |
|---|---|
| Linear formula | C2H5NCS |
| Assay | 97% |
| Boiling point | 130-132 °C(lit.) |
| Density | 0.995 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.512(lit.) |
| Melting point | −6 °C(lit.) |





Hazard statements
- H226Flammable liquid and vapour
- H301Toxic if swallowed
- H311Toxic in contact with skin
- H314Causes severe skin burns and eye damage
- H331Toxic if inhaled
- H334May cause allergy or asthma symptoms if inhaled
- H400Very toxic to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P301IF SWALLOWED
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 24 °C / 75.2 °F |
| Transport (UN / ADR) | UN 2924 8(3) / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 10-23/24/25-34-42/43-50 |
| Safety statements (S) | 23-26-36/37/39-45-61 |
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 Ethyl isothiocyanate used for?
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Ethyl isothiocyanate is used as an organic building block in chemical synthesis, in research and development for creating novel compounds, and in phytochemical studies. It is also relevant in cell biology and nutrition research.
What is the CAS number and formula for Ethyl isothiocyanate?
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The CAS number for Ethyl isothiocyanate is 542-85-8, and its chemical formula is C2H5NCS.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Ethyl isothiocyanate with an assay of 97%. We do not represent this product as USP, BP, or EP grade; it is suitable for research and technical applications.
How should Ethyl isothiocyanate be handled safely?
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Ethyl isothiocyanate is classified as Danger. It is flammable and toxic if swallowed, in contact with skin, or if inhaled. It causes severe skin burns and eye damage, and may cause respiratory irritation and an allergic skin reaction. Handle with appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, in a well-ventilated area.
Is Ethyl isothiocyanate a controlled substance?
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The provided data does not indicate that Ethyl isothiocyanate is a controlled substance. However, users should always comply with local regulations.
How is Ethyl isothiocyanate packed and shipped?
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Ethyl isothiocyanate is shipped according to UN 2924, Hazard Class 8(3), Packing Group III regulations, ensuring safe international export. Packaging is designed to maintain product integrity and comply with transportation safety standards.
How can I request a sample or quote for Ethyl isothiocyanate?
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To request a sample or a quote for Ethyl isothiocyanate, please contact the Tech Serve Solutions sales team through our website or by phone, providing your contact details and the quantity required.
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