Product Description
Phthalonitrile is an important aromatic nitrile compound widely used as an intermediate in organic synthesis and specialty chemical manufacturing. It is particularly valuable in the production of phthalocyanine compounds, including phthalocyanine dyes and pigments, which are known for their strong coloration and excellent color stability.
Beyond dye and pigment manufacturing, phthalonitrile and related aromatic nitrile compounds have applications in the synthesis of specialty chemicals, functional materials, and selected chemical intermediates. Their suitability for pharmaceutical and agrochemical synthesis depends on the specific compound and production process.
Aromatic nitrile derivatives can also be used in the manufacture of certain specialty colorants and other functional products. However, applications involving specific compounds, such as 2,4-dinitro-6-cyanoaniline in diazo dye production or nitrile compounds in fragrance formulations, should be verified individually rather than attributed to phthalonitrile itself.
Product Parameters
| Melting point | 137-139 °C (lit.) |
| Boiling point | 227.54°C (rough estimate) |
| density | 1.24 |
| vapor pressure | <1 Pa (25 °C) |
| refractive index | 1.6231 (estimate) |
| Fp | 162°C |
| storage temp. | Store below +30°C. |
| solubility | benzene: 50 mg/mL, clear |
| form | Crystals or Crystalline Powder |
| color | White to beige |
| PH | 7 (H2O) |
| Water Solubility | 0.56 g/L (25 ºC) |
| BRN | 775028 |
| Exposure limits | ACGIH: TWA 1 mg/m3 |
| Stability: | Stable. Incompatible with strong bases, strong acids, strong oxidizing agents, strong reducing agents. |
| CAS DataBase Reference | 91-15-6(CAS DataBase Reference) |
| NIST Chemistry Reference | Phthalonitrile(91-15-6) |
| EPA Substance Registry System | 1,2-Benzenedicarbonitrile (91-15-6) |
| Hazard Codes | T |
| Risk Statements | 25-23/24/25 |
| Safety Statements | 36/37/39-45-28A |
| RIDADR | UN 3439 6.1/PG 2 |
| WGK Germany | 1 |
| RTECS | TI8575000 |
| Autoignition Temperature | >580 °C |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| HS Code | 29269095 |
| Hazardous Substances Data | 91-15-6(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 85 mg/kg |
Application Scenarios
Phthalonitrile is an important organic chemical intermediate primarily used in the synthesis of phthalocyanine compounds, including phthalocyanine pigments and dyes. It also serves as a starting material for the preparation of selected specialty chemicals and functional materials.
Potential applications of phthalonitrile and its derivatives include:
Dyes and Pigments: Used in the synthesis of phthalocyanine compounds, which are widely applied in colorants, coatings, inks, and plastics.
Pharmaceutical Intermediates: May be used in the preparation of certain phthalic acid derivatives and related compounds for pharmaceutical research and chemical synthesis, depending on the target molecule.
High-Performance Materials: Phthalonitrile-derived compounds are of interest in the development of heat-resistant polymers and other advanced materials.
Catalysts and Specialty Chemicals: Certain derivatives may be used in specialized catalytic systems and other industrial chemical applications.
