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Pentamethylbenzene

Pentamethylbenzene structure

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

Last updated:2025-01-27 09:38:02

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Pentamethylbenzene Properties

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)
UNSPSC Code	12352100
NACRES	NA.22

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

TSCA

Yes

HazardClass

4.1

PackingGroup

III

HS Code

29029090

NFPA 704

	2
		0

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

Product number	Packaging	Price	Buy
153613	5g	$76.5	Buy
153613	100g	$298	Buy
P0043	5g	$62	Buy
P0043	25g	$175	Buy
L04163	5g	$33.65	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 synthesis

Synthesis of Pentamethylbenzene from Methanol

Pentamethylbenzene Preparation Products And Raw materials

Raw materials

Benzene, 1,2,3,4,5-pentamethyl-6-(trifluoromethyl)- acetic acid: (2,3,4,5,6-pentamethylphenyl)mercury PENTAMETHYLBENZOIC ACID 2',3',4',5',6'-PENTAMETHYLACETOPHENONE PENTAMETHYLIODOBENZENE

ALLYL TOLUENE-4-SULFONATE 2-Butyne

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Preparation Products

2,3,4,5,6-PENTAMETHYLBENZYL ALCOHOL 1-Butanone, 1-(2-methoxyphenyl)- PENTAMETHYLBENZENESULFONYL CHLORIDE 2,3,4,5,6-PENTAMETHYLBENZYL CHLORIDE BENZENEPENTACARBOXYLIC ACID

2,4-DIMETHYLPENTANE

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Pentamethylbenzene Suppliers

Global( 172)Suppliers

Supplier	Tel	Email	Country	ProdList	Advantage
Henan Fengda Chemical Co., Ltd	+86-371-86557731 +86-13613820652	info@fdachem.com	China	20234	58
Capot Chemical Co.,Ltd.	+86-（0）57185586718 +86-13336195806	sales@capot.com	China	29730	60
Beijing Cooperate Pharmaceutical Co.,Ltd	010-60279497	sales01@cooperate-pharm.com	CHINA	1803	55
Shanghai Time Chemicals CO., Ltd.	+86-021-57951555 +8617317452075	jack.li@time-chemicals.com	China	1803	55
career henan chemical co	+86-0371-86658258 +8613203830695	sales@coreychem.com	China	29858	58
Hubei Jusheng Technology Co.,Ltd.	18871490254	linda@hubeijusheng.com	CHINA	28172	58
Shaanxi Dideu Medichem Co. Ltd	+86-29-81148696 +86-15536356810	1022@dideu.com	China	3883	58
Fuxin Pharmaceutical	+86-021-021-50872116 +8613122107989	contact@fuxinpharm.com	China	10035	58
SIMAGCHEM CORP	+86-13806087780	sale@simagchem.com	China	17365	58
Hefei TNJ Chemical Industry Co.,Ltd.	+86-0551-65418671 +8618949823763	sales@tnjchem.com	China	34563	58

Supplier	Advantage
Henan Fengda Chemical Co., Ltd	58
Capot Chemical Co.,Ltd.	60
Beijing Cooperate Pharmaceutical Co.,Ltd	55
Shanghai Time Chemicals CO., Ltd.	55
career henan chemical co	58
Hubei Jusheng Technology Co.,Ltd.	58
Shaanxi Dideu Medichem Co. Ltd	58
Fuxin Pharmaceutical	58
SIMAGCHEM CORP	58
Hefei TNJ Chemical Industry Co.,Ltd.	58

View Lastest Price from Pentamethylbenzene manufacturers

Update time	Product	Price	Min. Order	Purity	Supply Ability	Manufacturer
2025-04-04	Pentamethylbenzene 700-12-9	US $0.00-0.00 / kg	1kg	98%	1Ton	Henan Aochuang Chemical Co.,Ltd.
2024-08-05	Pentamethylbenzene 700-12-9	US $0.10 / KG	1KG	99.0%	1000 tons	Shaanxi Dideu Medichem Co. Ltd
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

Pentamethylbenzene
700-12-9
US $0.00-0.00 / kg
98%
Henan Aochuang Chemical Co.,Ltd.

Pentamethylbenzene
700-12-9
US $0.10 / KG
99.0%
Shaanxi Dideu Medichem Co. Ltd

Pentamethylbenzene
700-12-9
US $100.00-1.00 / KG
99%
Henan Fengda Chemical Co., Ltd

Pentamethylbenzene Spectrum

Pentamethylbenzene(700-12-9)MS Pentamethylbenzene(700-12-9)¹HNMR Pentamethylbenzene(700-12-9)¹³CNMR Pentamethylbenzene(700-12-9)IR1 Pentamethylbenzene(700-12-9)IR2 Pentamethylbenzene(700-12-9)Raman

700-12-9(Pentamethylbenzene)Related Search:

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Benzene, 1,2,3,4,5-pentamethyl- benzene,pentamethyl- pentamethyl-benzen Pentmethyl Benzene Pentamethylbenzene~95% Pentamethyl phenyl PENTAMETHYLBENZENE Pentamethylbenzene,99% Pentamethylbenzene> Pentamethylbenzene ISO 9001：2015 REACH 1,2,3,4,5-PENTAMETHYLBENZENE PentaMethy PENTAMETHYLBENZENE 1,2,3,4,5-Pentamethylbenzene Pentamethylbenzene in toluene Ofloxacin Impurity 6 Monomer (Ofloxacin EP Impurity F) 700-12-9 700129 CH35C6H C6HCH35 Organic Building Blocks Building Blocks Arenes Building Blocks Chemical Synthesis Organic Building Blocks Arenes Building Blocks Organic Building Blocks