This article focuses on the physical properties, toxicity, reactivity, and emergency response information for isocyanates, in their various forms often found in commerce. The information was gathered from available litterature and is presented per subject category.
Pure products have the melting point mentioned in the above table.
Therefore most commercial isocyanates will be found in a liquid state at ambient temperatures except in the winter months. TDI is often seen commercially in its pure form. HDI is the cheapest diisocyanate and in view of its low boiling point, is no longer used. HDI may be used as an ingredient in the preparation of dental materials, contact lenses, and medical adsorbents. HDI and its polymers may be mixed in solvents such as Xylene and Toluene.