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1,2,3,4-Tetramethylbenzene

Description Reference

CAS No.488-23-3
Chemical Name:1,2,3,4-Tetramethylbenzene
CBNumber:CB9184211
Molecular Formula:C10H14
Formula Weight:134.22
MOL File:488-23-3.mol

1,2,3,4-Tetramethylbenzene Property

Melting point 76-80 °C(lit.)
Boiling point 203°C
Density 0.838 g/mL at 25 °C(lit.)
vapor density 4.6 (vs air)
vapor pressure 160 mm Hg ( 140 °C)
refractive index 1.5190
Flash point 165 °F
storage temp. Sealed in dry,Room Temperature
solubility Chloroform (Slightly), Ethyl Acetate (Slightly)
form Oil
color Colourless
Odor Threshold 0.011ppm
Water Solubility Immiscible with water.
BRN 1904390
Dielectric constant 2.5899999999999999
LogP 4.000
CAS DataBase Reference 488-23-3(CAS DataBase Reference)
FDA UNII 96WT7D2WXJ
NIST Chemistry Reference Benzene, 1,2,3,4-tetramethyl-(488-23-3)
EPA Substance Registry System 1,2,3,4-Tetramethylbenzene (488-23-3)

Safety

Hazard Codes :F
Risk Statements :11
Safety Statements :26-37
RIDADR :UN 1325 4.1/PG 2
WGK Germany :1
RTECS :DC0500000
TSCA :Yes
HazardClass :3
PackingGroup :Ⅱ

NFPA 704:

	2
		0

Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal wordWarning
Hazard statements H227-H315-H319-H335
Precautionary statements P210e-P261-P280a-P305+P351+P338-P405-P501a

1,2,3,4-Tetramethylbenzene Price More Price(2)

Brand: ALFA India
Product number: ALF-L19756-14
Product name : 1,2,3,4-Tetramethylbenzene, 95%
Purity:
Packaging: 25g
Price: ₹66849
Updated: 2022/05/26
Buy: Buy

Brand: ALFA India
Product number: ALF-L19756-06
Product name : 1,2,3,4-Tetramethylbenzene, 95%
Purity:
Packaging: 5g
Price: ₹13917
Updated: 2022/05/26
Buy: Buy

1,2,3,4-Tetramethylbenzene Chemical Properties,Usage,Production

Description 1, 2, 3, 4-Tetramethylbenzene is used as a starting material in the preparation of 1, 2, 3, 4-tetramethyl benzene-5-chlorosulfonyl chloride by reacting with chlorosulfonic acid¹. In industry, it is the precursor to pyromellitic dianhydride, which is used for manufacturing curing agents, adhesives, coating materials. It is used in the manufacture of some raw materials for engineering plastics (polyimides) and cross-linking agent for alkyd resins. It is also a suitable starting material for the synthesis of hexamethylbenzene^2-4.
Reference
1. https://www.alfa.com/en/catalog/L19756/
2. Hoefs, Marcel J. L., et al. "Alternative biological sources for 1,2,3,4-tetramethylbenzene in flash pyrolysates of kerogen." Organic Geochemistry 23.10(1995): 975-979.
3. Sun, Yongge, et al. "Source facies of the Paleozoic petroleum systems in the Tabei uplift, Tarim Basin, NW China: implications from aryl isoprenoids in crude oils." Organic Geochemistry 34.4(2003): 629-634.
4. Jia, Wanglu, et al. "Source of 1,2,3,4-tetramethylbenzene in asphaltenes from the Tarim Basin." Journal of Asian Earth Sciences 30.5(2007):591-598.
Chemical Properties Colorless liquid. Soluble in alcohol; insoluble in water.
Uses 1,2,3,4-Tetramethylbenzene is a useful starting material and building block for organic synthesis. An analyte identified in the volatile oils from Taxodium ascendens leaves and cones. Antibacterial activity.
Definition ChEBI: A tetramethylbenzene that consists of benzene substituted by methyl groups at positions 1, 2, 3 and 4.
Purification Methods Dry it over sodium and distil under reduced pressure. The picrate has m 92-95o (EtOH). [Beilstein 5 H 430, 5 I 206. 5 II 329, 5 III 974, 5 IV 1072.]