188-52-3
188-52-3 structure
- Name: (±)-[5]helicene
- Chemical Name: pentahelicene
- CAS Number: 188-52-3
- Molecular Formula: C22H14
- Molecular Weight: 278.347
- Create Date: 2018-08-28 10:17:06
- Modify Date: 2024-01-05 12:38:02
| Name | pentahelicene |
|---|---|
| Synonyms |
[5]Helicene
3,4:5,6-Dibenzophenanthrene Naphtho[2,1-c]phenanthrene Dibenzo[c,g]phenanthrene Dibenzo(c,g)phenanthrene Pentahelicene Dibenzo[c,g]phenanthrene,(A'A A'A currency) (A'A A'A currency)-Pentahelicene |
| Density | 1.2±0.1 g/cm3 |
|---|---|
| Boiling Point | 524.7±17.0 °C at 760 mmHg |
| Molecular Formula | C22H14 |
| Molecular Weight | 278.347 |
| Flash Point | 264.5±15.1 °C |
| Exact Mass | 278.109558 |
| LogP | 7.14 |
| Vapour Pressure | 0.0±0.7 mmHg at 25°C |
| Index of Refraction | 1.812 |
| HS Code | 2902909090 |
|---|
| Precursor 9 | |
|---|---|
| DownStream 1 | |
![bis[2-((1Z)-1-buten-3-ynyl)phenyl]acetylene structure](https://www.chemsrc.com/caspic/377/457885-21-1.png)
![2-(bromomethyl)-1-[2-(bromomethyl)naphthalen-1-yl]naphthalene structure](https://www.chemsrc.com/caspic/384/54130-90-4.png)
![Dibenzo[c,g]phenanthrene, 9,12-dibromo- (en) structure](https://www.chemsrc.com/caspic/087/139371-82-7.png)
![3,9,12-tribromodibenzo[c,g]phenanthrene structure](https://www.chemsrc.com/caspic/425/139371-86-1.png)
![Benzo[ghi]perylene structure](https://www.chemsrc.com/caspic/071/191-24-2.png)
| HS Code | 2902909090 |
|---|---|
| Summary | 2902909090 other aromatic hydrocarbons。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:2.0%。General tariff:30.0% |