Benzene, 1,3-diethynyl- (9CI)
1,3-diethynylbenzene
CAS: 1785-61-1
Molecular Formula: C10H6
Benzene, 1,3-diethynyl- (9CI) - Names and Identifiers
| Name | 1,3-diethynylbenzene |
| Synonyms | M-DIETHYNYLBENZENE TIMTEC-BB SBB008746 1,3-DIETHYNYLBENZENE 1,3-diethynylbenzene m-Phenylenediacetylene Benzene,1,3-diethynyl- Benzene, 1,3-diethynyl- (9CI) 1,1'-(1,3-Phenylene)bis(acetylene) |
| CAS | 1785-61-1 |
Benzene, 1,3-diethynyl- (9CI) - Physico-chemical Properties
| Molecular Formula | C10H6 |
| Molar Mass | 126.15 |
| Density | 0.949 g/mL at 25 °C (lit.) |
| Melting Point | -3°C |
| Boling Point | 188-189 °C (lit.) |
| Flash Point | 165 °F |
| Storage Condition | 2-8℃ |
| Refractive Index | n20/D 1.5820(lit.) |
| MDL | MFCD00041686 |
| Use | Uses isophthalylene has very important uses in pharmaceutical synthesis, liquid crystal materials, aerospace materials, etc; |
Benzene, 1,3-diethynyl- (9CI) - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R11 - Highly Flammable |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S15 - Keep away from heat. S3/7/9 - |
| UN IDs | 3295 |
Benzene, 1,3-diethynyl- (9CI) - Nature
| storage conditions | 2-8°C |
| InChIKey | PNXLPYYXCOXPBM-UHFFFAOYSA-N |
Last Update：2024-04-10 22:29:15
Benzene, 1,3-diethynyl- (9CI) - Security information
| WGK Germany | 3 |
| customs code | 29029090 |
Last Update：2024-04-10 22:29:15
Benzene, 1,3-diethynyl- (9CI) - Overview
isophthalenediacetylene has very important uses in pharmaceutical synthesis, liquid crystal materials, aerospace materials, etc.; the industrial production of high-purity isophthalenediacetylene is very difficult, and there are methods to use m-dibromobenzene as raw material, and 2-Methyl-2-hydroxybutyne undergoes hack reaction under the left and right of palladium catalyst, and then hydrolyzes to obtain isophthalenediacetylene. This method, the catalyst cannot be recovered and the industrialization cost is high. There are reports in the literature that mixed divinylbenzene is used as raw material, and the mixed diethynyl benzene is eliminated after bromination, and then separated; this method is difficult to obtain high-purity isophthalene diacetylene, and it is difficult to meet the purity requirements.
Last Update：2024-04-10 22:29:15
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