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T73202

Sigma-Aldrich

1,2,3-Trimethylbenzene

Synonym(s):

Hemellitol

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About This Item

Linear Formula:
C6H3(CH3)3
CAS Number:
526-73-8
Molecular Weight:
120.19
Beilstein:
1903410
EC Number:
208-394-8
MDL number:
MFCD00008520
UNSPSC Code:
12352100
eCl@ss:
39011402
PubChem Substance ID:
24900444
NACRES:
NA.22

vapor density

4.15 (vs air)

vapor pressure

3.4 mmHg ( 37.7 °C)

autoignition temp.

878 °F

refractive index

n20/D 1.513 (lit.)

bp

175-176 °C (lit.)

mp

−25 °C (lit.)

density

0.894 g/mL at 25 °C (lit.)

SMILES string

Cc1cccc(C)c1C

InChI

1S/C9H12/c1-7-5-4-6-8(2)9(7)3/h4-6H,1-3H3

InChI key

FYGHSUNMUKGBRK-UHFFFAOYSA-N

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Pictograms

FlameExclamation mark
GHS02,GHS07

Signal Word

Warning

Hazard Statements

H226,H315,H319,H335

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

127.4 °F - closed cup

Flash Point(C)

53 °C - closed cup

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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T Tomas et al.
International journal of occupational medicine and environmental health, 12(1), 73-84 (1999-06-09)
In a series of acute experiments on rats the potential of toluene, mesitylene, hemimellitene and pseudocumene to affect the CNS function was assessed following an analysis of spontaneous and evoked hippocampal and cortical activity. The electrophysiological examinations were performed on
Y Tsujimoto et al.
Chemosphere, 39(5), 725-730 (1999-08-17)
The structure was investigated of the mercapturic acid excreted in urine of rats after the i.p. administration of 1,2,3-trimethylbenzene. Of the two regioisomeric mercapturic acids, i.e. N-acetyl-S-(2,3-dimethylbenzyl)-L-cysteine and N-acetyl-S-(2,6-dimethyl-benzyl)-L-cysteine, only the former was isolated by preparative HPLC and identified, by
Z Korsak et al.
International journal of occupational medicine and environmental health, 13(3), 223-232 (2000-12-08)
Toxic effects of exposure to 1,2,3-trimethylbenzene (hemimellitene) in the condition of subchronic inhalation experiment were examined. Rats were exposed to vapours of hemimellitene at concentrations of 123 mg/m3, 492 mg/m3 and 1230 mg/m3, 6 h/day, 5 days/week for 3 months.
Application of gas chromatography in conjunction with enrichment of samples on active carbon to determine low concentrations of organic compounds in air. Part I. Aromatic hydrocarbons.
H Swedrowska et al.
Bulletin of the Institute of Maritime and Tropical Medicine in Gdynia, 37(1-2), 103-112 (1986-01-01)
Z Korsak et al.
International journal of occupational medicine and environmental health, 9(4), 341-349 (1996-01-01)
Neurotoxic effects of trimethylbenzene isomers (pseudocumene, mesitylene and hemimellitene) in male rats were investigated in conditions of acute and subchronic inhalation exposure. Rotarod performance and pain sensitivity behaviour were tested in rats exposed to trimethylbenzenes at concentrations of 250-2,000 ppm
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