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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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Related Categories

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(4), 331-343 (2000-03-07)
This study was performed to find out whether in acute exposure to trimethylbenzene (TMB) isomers the dose effect relationship is linear or biphasic. In experiments performed on rats, the effect of four solvents was studied: three TMB isomers: 1,3,5-TMB (mesitylene)
E Janik-Spiechowicz et al.
Mutation research, 412(3), 299-305 (1998-05-26)
The three trimethyl isomers of benzene (hemimellitene, 1,2,3-TMB; pseudocumene, 1,2,4-TMB and mesitylene, 1,3,5-TMB) were investigated for different genotoxicity endpoints: in vitro, in the Ames test with Salmonella typhimurium TA97a, TA98, TA100 and TA102 strains in the presence and absence of
J Järnberg et al.
Toxicology and applied pharmacology, 140(2), 281-288 (1996-10-01)
The objective of this study was to determine the uptake and disposition of inhaled trimethylbenzenes (TMBs) in man. The toxicokinetics were studied in 10 male, healthy volunteers exposed to TMB vapor in an exposure chamber for 2 hr during a
Kinetics of solvents release from paint coatings. I. Paint coating hardened at +20 degrees C temperature.
R Wiglusz et al.
Bulletin of the Institute of Maritime and Tropical Medicine in Gdynia, 37(3-4), 247-253 (1986-01-01)
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.
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