Pentamethylbenzene
- CAS No.
- 700-12-9
- Chemical Name:
- Pentamethylbenzene
- Synonyms
- 1,2,3,4,5-PENTAMETHYLBENZENE;PentaMethy;PENTAMETHYLBENZENE;Pentamethyl phenyl;Pentmethyl Benzene;pentamethyl-benzen;benzene,pentamethyl-;Pentamethylbenzene>Pentamethylbenzene,99%;Pentamethylbenzene~95%
- CBNumber:
- CB6854133
- Molecular Formula:
- C11H16
- Molecular Weight:
- 148.24
- MDL Number:
- MFCD00008522
- MOL File:
- 700-12-9.mol
| Melting point | 49-51 °C (lit.) |
|---|---|
| Boiling point | 231 °C (lit.) |
| Density | 0.917 g/mL at 25 °C (lit.) |
| refractive index | 1.5270 |
| Flash point | 196 °F |
| storage temp. | Sealed in dry,Room Temperature |
| form | powder to crystal |
| color | White to Almost white |
| Water Solubility | 15.52mg/L(temperature not stated) |
| BRN | 1905349 |
| CAS DataBase Reference | 700-12-9(CAS DataBase Reference) |
| FDA UNII | H6JLD3AI98 |
| NIST Chemistry Reference | Benzene, pentamethyl-(700-12-9) |
| EPA Substance Registry System | Benzene, pentamethyl- (700-12-9) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS02,GHS07 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H228-H315-H319-H335 | |||||||||
| Precautionary statements | P210-P302+P352-P305+P351+P338 | |||||||||
| Hazard Codes | F,Xi | |||||||||
| Risk Statements | 11-36/37/38 | |||||||||
| Safety Statements | 16-26-36 | |||||||||
| RIDADR | UN 1325 4.1/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 4.1 | |||||||||
| PackingGroup | III | |||||||||
| HS Code | 29029090 | |||||||||
| NFPA 704 |
|
Pentamethylbenzene price More Price(16)
| Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
|---|---|---|---|---|---|---|---|
| Sigma-Aldrich | 153613 | Pentamethylbenzene 98% | 700-12-9 | 5g | $76.5 | 2024-03-01 | Buy |
| Sigma-Aldrich | 153613 | Pentamethylbenzene 98% | 700-12-9 | 100g | $298 | 2024-03-01 | Buy |
| TCI Chemical | P0043 | Pentamethylbenzene >99.0%(GC) | 700-12-9 | 5g | $62 | 2024-03-01 | Buy |
| TCI Chemical | P0043 | Pentamethylbenzene >99.0%(GC) | 700-12-9 | 25g | $175 | 2024-03-01 | Buy |
| Alfa Aesar | L04163 | Pentamethylbenzene, 99% | 700-12-9 | 5g | $33.65 | 2024-03-01 | Buy |
Pentamethylbenzene Chemical Properties,Uses,Production
Chemical Properties
Pentamethylbenzene is a white to light yellow crystalline powder with a sweet odor. The compound is classified as an aromatic hydrocarbon. It is a relatively easily oxidized benzene derivative, with E1/2 of 1.95 V vs NHE.
Uses
Pentamethylbenzene was used to prepare a mixture of nitropentamethylbenzene and 2,3,4,5-tetramethylbenzyl nitrate. It was also used to prepare propene.
Definition
ChEBI: Pentamethylbenzene is a methylbenzene that is benzene in which five of the hydrogens are replaced by methyl groups.
Synthesis Reference(s)
Synthesis, p. 979, 1985 DOI: 10.1055/s-1985-31413
Synthesis
Pentamethylbenzene is obtained as a minor product in the Friedel–Crafts methylation of xylene to durene (1,2,4,5-tetramethylbenzene). Like durene, pentamethylbenzene is rather electron-rich and undergoes electrophilic substitution readily. Indeed, it is used as a scavenger for carbocations.
Pentamethylbenzene has been observed as an intermediate in the formation of hexamethylbenzene from phenol and alkylation of durene or pentamethylbenzene has been reported as a suitable starting material for the synthesis of hexamethylbenzene.
Purification Methods
Successively crystallise it from absolute EtOH, aqueous EtOH, MeOH, toluene *C6H6, and dry it under vacuum. [Rader & Smith J Am Chem Soc 84 1443 1962.] It has also been sublimed. The 1,3,5-trinitrobenzene complex (1:1) has m 121o (EtOH). [Beilstein 5 H 443, 5 III 1010, 5 IV 1109.]
Precautions
Incompatible with oxidizing agents. Store in cool place. Keep container tightly closed in a dry and well-ventilated place.
Pentamethylbenzene Preparation Products And Raw materials
Raw materials
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Preparation Products
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| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Henan Fengda Chemical Co., Ltd | +86-371-86557731 +86-13613820652 | info@fdachem.com | China | 18225 | 58 |
| Capot Chemical Co.,Ltd. | 571-85586718 +8613336195806 | sales@capotchem.com | China | 29797 | 60 |
| Beijing Cooperate Pharmaceutical Co.,Ltd | 010-60279497 | sales01@cooperate-pharm.com | CHINA | 1811 | 55 |
| Shanghai Time Chemicals CO., Ltd. | +86-021-57951555 +8617317452075 | jack.li@time-chemicals.com | China | 1807 | 55 |
| career henan chemical co | +86-0371-86658258 | sales@coreychem.com | China | 29914 | 58 |
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Chongqing Chemdad Co., Ltd | +86-023-61398051 +8613650506873 | sales@chemdad.com | China | 39916 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-81148696 +8615536356810 | 1047@dideu.com | China | 2490 | 58 |
| SIMAGCHEM CORP | +86-13806087780 | sale@simagchem.com | China | 17367 | 58 |
| Hefei TNJ Chemical Industry Co.,Ltd. | 0551-65418671 | sales@tnjchem.com | China | 34572 | 58 |
View Lastest Price from Pentamethylbenzene manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2023-12-26 | Pentamethylbenzene
700-12-9
|
US $100.00-1.00 / KG | 1KG | 99% | g-kg-tons, free sample is available | Henan Fengda Chemical Co., Ltd | |
 |
2022-09-30 | Pentamethylbenzene
700-12-9
|
US $0.00-0.00 / kg | 1kg | 98% | 1Ton | Henan Aochuang Chemical Co.,Ltd. | |
 |
2021-07-13 | Pentamethylbenzene
700-12-9
|
US $15.00-10.00 / KG | 1KG | 99%+ HPLC | Monthly supply of 1 ton | Zhuozhou Wenxi import and Export Co., Ltd |
-
- Pentamethylbenzene
700-12-9
- US $100.00-1.00 / KG
- 99%
- Henan Fengda Chemical Co., Ltd
-
- Pentamethylbenzene
700-12-9
- US $0.00-0.00 / kg
- 98%
- Henan Aochuang Chemical Co.,Ltd.
-
- Pentamethylbenzene
700-12-9
- US $15.00-10.00 / KG
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd
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