(2E)-2-Butenedinitrile
FUMARONITRILE
CAS: 764-42-1
Molecular Formula: C4H2N2
(2E)-2-Butenedinitrile - Names and Identifiers
(2E)-2-Butenedinitrile - Physico-chemical Properties
| Molecular Formula | C4H2N2 |
| Molar Mass | 78.07 |
| Density | 1.249 g/cm3 (20 ºC) |
| Melting Point | 93-95 °C (lit.) |
| Boling Point | 186 °C (lit.) |
| Flash Point | 186°C |
| Refractive Index | 1.4920 (589.3 nm 20℃ |
| Physical and Chemical Properties | Chemical properties white needle-like crystals. Melting point 96 ℃, boiling point 186 ℃. Soluble in benzene, ethanol, ether. Easy to sublimate. |
| Use | Uses for organic synthesis. |
(2E)-2-Butenedinitrile - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | 23/25 - Toxic by inhalation and if swallowed. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3439 6.1/PG 3 |
(2E)-2-Butenedinitrile - Upstream Downstream Industry
(2E)-2-Butenedinitrile - Nature
| storage conditions | Sealed in dry,Room Temperature |
| solubility | ethanol: soluble50 (mg/mL; colorless to yellow) |
| morphology | Crystals |
| color | White |
| BRN | 969245 |
| stability | Stable. Incompatible with strong acids, strong bases, strong oxidizing agents, strong reducing agents. |
| InChIKey | KYPOHTVBFVELTG-OWOJBTEDSA-N |
| EPA chemical information | Fumaronitrile (764-42-1) |
Last Update：2024-04-10 22:29:15
(2E)-2-Butenedinitrile - Uses and synthesis methods
overview
Transbutene dinitrile can be prepared from maleic anhydride in three steps. Substituted naphthalocyanine and its complexes have become a new type of functional materials due to their special structure and properties, which have been widely studied and applied in many high-tech fields.
production method
It is made from fumaric acid. The chemical properties of fumaric acid are similar to those of maleic acid. When fumaric acid is heated to 250-300 ℃ to transform maleic anhydride, fumaric acid can also generate monobilic and binary esters or amides, but it cannot generate monobilic acid chloride and can generate diobilic acid chloride. Trambutenic acid is esterified to generate diethyl fumarate, which is then amidated and dehydrated to obtain trans-butene dinitrile. 1. Amidation Cold diethyl fumarate to 0 ℃, slowly add ammonia water under stirring, stir for 4 hours after adding, filter, wash once with a small amount of water, and dry to obtain transbutene amide [627-64-5]. 2. Dehydration The above-mentioned trans-butene amide and phosphorus pentoxide are mixed evenly, heated and distilled under reduced pressure until there is no distillate to obtain a crude trans-butene dinitrile. Dissolve the crude product in benzene, shake it and pour it into petroleum ether, filter it, and cool it to obtain the finished product.
Last Update：2024-04-10 22:29:15
(2E)-2-Butenedinitrile - Security information
| WGK Germany | 3 |
| RTECS number | LT2300000 |
| TSCA | Yes |
| HazardClass | 6.1 |
| PackingGroup | II |
| customs code | 29269090 |
Last Update：2024-04-10 22:29:15
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Raw Materials for (2E)-2-Butenedinitrile
Maleic anhydride
Maleic acid
Fumaric acid
FUMARAMIDE
Acrylonitrile
(TRIPHENYLPHOSPHORANYLIDENE)ACETONITRILE
Maleic acid
Fumaric acid
FUMARAMIDE
Acrylonitrile
(TRIPHENYLPHOSPHORANYLIDENE)ACETONITRILE
Downstream Products for (2E)-2-Butenedinitrile