Vinyl isocyanate
Vinyl isocyanate (CAS: 3555-94-0) is a reactive organic compound with the linear formula H₂C=CHNCO and a molecular weight of 69.06 g/mol. This clear, colourless liquid is characterised by its isocyanate functionality and vinyl group, making it a valuable intermediate in organic synthesis. It is primarily used as a building block in the chemical industry for the preparation of various complex molecules and materials.

Organic Synthesis Intermediate
Vinyl isocyanate serves as a versatile building block in organic chemistry. Its reactive isocyanate group readily participates in addition reactions, enabling the synthesis of diverse nitrogen-containing compounds.
Polymer Chemistry
The presence of both a vinyl group and an isocyanate moiety allows for its use in polymerisation processes. It can be incorporated into polymer chains to introduce specific functional groups or modify polymer properties.
Pharmaceutical Intermediates
As a key organic building block, vinyl isocyanate can be employed in the multi-step synthesis pathways of pharmaceutical compounds. Its structure lends itself to the creation of complex heterocyclic systems.
| Molecular weight | 69.06 |
|---|---|
| Linear formula | H2C=CHNCO |
| Assay | 95% |
| Boiling point | 39-40 °C(lit.) |
| Density | 0.938 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4190(lit.) |
| Storage temperature | 2-8°C |




Hazard statements
- H225Highly flammable liquid and vapour
- H301Toxic if swallowed
- H312Harmful in contact with skin
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H318Causes serious eye damage
- H330Fatal if inhaled
- H334May cause allergy or asthma symptoms if inhaled
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US) |
|---|---|
| Flash point | 4 °C / 39.2 °F |
| Transport (UN / ADR) | UN 3383 6.1/PG 1 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,T |
| Risk statements (R) | 11-20/21-25-37/38-41-42/43 |
| Safety statements (S) | 16-26-36/37/39-45 |
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 Vinyl Isocyanate used for?
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Vinyl isocyanate is primarily used as a building block in organic synthesis and polymer chemistry for creating complex nitrogen-containing molecules and functionalised polymers.
What are the CAS number and formula for Vinyl Isocyanate?
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The CAS number for Vinyl Isocyanate is 3555-94-0, and its linear formula is H₂C=CHNCO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Vinyl Isocyanate with a minimum assay of 95%. We do not represent this product as USP, BP, or EP grade.
How should Vinyl Isocyanate be handled safely?
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Vinyl Isocyanate is highly hazardous. Handle with extreme caution in a well-ventilated area or fume hood, wearing appropriate personal protective equipment including chemical-resistant gloves, safety goggles, a face shield, and respiratory protection. Avoid contact with skin, eyes, and clothing, and prevent inhalation of vapours. Refer to the safety data sheet for comprehensive handling procedures.
Is Vinyl Isocyanate a controlled substance?
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Based on the provided data, there is no indication that Vinyl Isocyanate is a controlled substance.
How is Vinyl Isocyanate packed, shipped, and exported?
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Vinyl Isocyanate is packed according to safety regulations for hazardous materials, such as UN 3383, Class 6.1. TSS is a global supplier and exporter of fine chemicals, adhering to all international shipping and export requirements.
How can I request a quote or sample for Vinyl Isocyanate?
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To request a quote or sample for Vinyl Isocyanate, please contact our sales department through the TSS website or by phone.
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