ISOCYANIC ACID CAS#75-13-8
Broad Product Variety — Includes a diverse range of compounds, such as TDI, MDI, IPDI, PAPI, and HDI, providing multiple options for different industrial requirements.
Versatile Chemical Structure — Covers alkyl monoisocyanates, substituted phenyl monoisocyanates, α-substituted alkyl isocyanates, and polyisocyanates.
Distinctive Reactive Functional Group — Features the characteristic isocyanate functional group (R−N=C=O), enabling broad applications in chemical synthesis and material production.
Diverse Physical Properties — Commonly available as colorless or pale yellow liquids, with physical properties that can vary according to molecular structure.
ISOCYANIC ACID CAS#75-13-8
Isocyanates are a general class of compounds derived from isocyanic acid (HNCO), characterized by the chemical formula R−N=C=O. Major isocyanate compounds can be classified into four main categories: alkyl monoisocyanates, substituted phenyl monoisocyanates, α-substituted alkyl isocyanates, and polyisocyanates.
Common examples include toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), isophorone diisocyanate (IPDI), polymethylene polyphenyl polyisocyanate (PAPI), and hexamethylene diisocyanate (HDI). Most common isocyanates are colorless or pale yellow liquids with a pungent odor, and their physical properties vary depending on their molecular structures.
| English Name | ISOCYANIC ACID |
| English Synonyms | Bayhydur XP 2451/1;HN=C=O;ISOCYANIC ACID;Isocyanic acid(6CI,8CI,9CI);JACS-75-13-8;Isocyanicaci;75-13 -8 ISOCYANIC ACID;SOCYANIC ACID |
| CAS Number | 75-13-8 |
| Molecular Formula | CHNO |
| Molecular Weight | 43.02 |
| EINECS Number | 200-808-5 |
| Melting point | -86 ℃ |
| Boiling point | 41.91°C (rough estimate) |
| Density | 1.04±0.1 g/cm3(Predicted) |
| Refractive index | 1.4300 (estimate) |
| pH value | 3.35(1 mM solution);2.76(10 mM solution);2.23(100 mM solution) |
| Specific heat capacity | Cp(gas): 1.04 J/(g-K), at 25℃ |
| Henry's Law Con stant | 2.0x10-1 mol/(m3Pa) at 25C, Roberts and Liu (2019) |
| InChI | InChI=1S/CHNO/c2-1-3/h2H |
| InChIKey | OWIKHYCFFJSOEH-UHFFFAOYSA-N |
| SMILES | N=C=0 |
Product Application of Isocyanates
Isocyanates are most widely used in the polyurethane industry. Polyurethane materials produced from different raw materials, such as TDI, MDI, and HMDI, are extensively applied in automotive parts, shoe soles, artificial leather, coatings, adhesives, thermal insulation materials, durable polyurethane products, paints, and dyes. They are also used in the preparation of plant protection products, pesticides, herbicides, plant growth regulators, and anti-tumor drugs.
In industrial production, isocyanate-based polymers can also be used in the synthesis of pigments, resins, textile water-repellent agents, plastics, detergents, foams, elastomers, adhesives, and coatings.
