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493856

Sigma-Aldrich

3,4-Dimethylbenzaldehyde

98%

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About This Item

Linear Formula:
(CH3)2C6H3CHO
CAS Number:
Molecular Weight:
134.18
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

refractive index

n20/D 1.551 (lit.)

bp

226 °C (lit.)

density

1.012 g/mL at 25 °C (lit.)

SMILES string

Cc1ccc(C=O)cc1C

InChI

1S/C9H10O/c1-7-3-4-9(6-10)5-8(7)2/h3-6H,1-2H3

InChI key

POQJHLBMLVTHAU-UHFFFAOYSA-N

General description

3,4-Dimethylbenzaldehyde (3,4-DMB) is a benzaldehyde derivative. It is the OH radical initiated oxidative degradation product of trimethylbenzene. The rate coefficient of the gas-phase reaction between 3,4-DMB and OH radical is 24.6±4.0×10-12cm3molecule-1s-1. The vibrational analysis of 3,4-DMB based on FT-IR spectra, FT-Raman spectra, ab initio and density functional theory (DFT) calculations have been reported. It is formed as an intermediate during the transformation of furfural into gasoline-range fuels using ZSM(Zeolite Socony Mobil)-5-based catalysts.

Application

3,4-Dimethylbenzaldehyde may be used in the synthesis of 3,4-dimethylmethcathinone (DMMC) and 3,4-dimethyl-dibenzylidene sorbitol.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Rate coefficients for the gas-phase reaction of hydroxyl radicals with the dimethylbenzaldehydes.
Clifford GM and Wenger JC.
International Journal of Chemical Kinetics, 38(9), 563-569 (2006)
Urinary excretion and metabolism of the newly encountered designer drug 3,4-dimethylmethcathinone in humans.
Shima N, et al.
Forensic Toxicology, 31(1), 101-112 (2013)
Synthesis of 3,4-Dimethyl-dibenzylidene Sorbitol at Room Temperature.
Yin ZY, et al.
Huaxue Shiji, 47(3), 174-174 (2006)
Catalytic fast pyrolysis of furfural over H-ZSM-5 and Zn/H-ZSM-5 catalysts.
Fanchiang WL and Lin YC.
Applied Catalysis A: General, 419, 102-110 (2012)
Vibrational spectroscopy investigation using ab initio and density functional theory analysis on the structure of 3, 4-dimethylbenzaldehyde.
Sundaraganesan N, et al.
Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, 68(3), 680-687 (2007)

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