Sub-Product
- Main Product
- C9 Aromatics (Saturated)
- Segment
- Chemicals
- Main-Family
- Aromatics
- Sub-Family
- C9 Aromatics
- Physical State
-
Liquid
- Sub-Product
- Trimethylbenzene (Isomers)
- Abbreviation
- TMB
- Alt. Names
- Hemimellitene; Pseudocumene; Mesitylene; Symmetrical TMB
- Description
-
Trimethylbenzenes (TMBs) are aromatic hydrocarbons consisting of a benzene ring with three methyl groups, forming three structural isomers:
6. 1,2,3-Trimethylbenzene (hemimellitene)
7. 1,2,4-Trimethylbenzene (pseudocumene)
8. 1,3,5-Trimethylbenzene (mesitylene)TMBs are produced during catalytic reforming of petroleum naphtha, appearing in the reformate along with other aromatics. The reforming process transforms paraffins and naphthenes into aromatics-rich products. TMBs are also present in steam cracking products, specifically in pyrolysis gasoline (py-gas) and in C9+ streams containing monoaromatics.
In naphtha reformate, pseudocumene (1,2,4-TMB) can be readily recovered by conventional distillation. In steam cracking of naphtha, aromatics (including TMBs) typically make up 1-10 wt% of the products, mainly as BTX. Commercial C9 aromatic naphtha typically contains 1,2,4-trimethylbenzene at 20-45%, 1,3,5-trimethylbenzene at 8-15%.
Source: Perplexity A.I. search, 3rd Jan 2024, Various prompts related to 'Trimethylbenzene'.
Identifiers
No Identifiers defined
Chemical Data
- Chemical Formula
-
C9H12
- Molecular Weight (g/mol)
- 120.19
- Boiling Point (°C)
- 170
- Specific Gravity
- 0.87
Properties
- Default
- Status
- A
System Info
- Update by
-
Kokel, Nicolas - Updated
- 1/4/2025 8:30 AM
- Added by
-
Kokel, Nicolas
- Added
- 1/3/2025 9:40 PM
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