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Merck
CN

45996

Supelco

1,2,4-Trimethylbenzene

analytical standard

Synonym(s):

Pseudocumene

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About This Item

Linear Formula:
C6H3(CH3)3
CAS Number:
95-63-6
Molecular Weight:
120.19
Beilstein:
1903005
EC Number:
202-436-9
MDL number:
MFCD00008527
UNSPSC Code:
41116107
eCl@ss:
39011403
PubChem Substance ID:
329757044
NACRES:
NA.24

Key Documents

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grade

analytical standard

Quality Level

100

vapor density

4.1 (vs air)

vapor pressure

4.5 mmHg ( 37.7 °C)

autoignition temp.

959 °F

shelf life

limited shelf life, expiry date on the label

expl. lim.

6.4 %

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

refractive index

n20/D 1.504 (lit.)

bp

168 °C (lit.)

mp

−44 °C (lit.)

density

0.876 g/mL at 20 °C (lit.)

application(s)

environmental

format

neat

SMILES string

Cc1ccc(C)c(C)c1

InChI

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

InChI key

GWHJZXXIDMPWGX-UHFFFAOYSA-N

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Application

1,2,4-Trimethylbenzene may be used as an analytical reference standard for the quantification of the analyte in environmental samples using gas chromatography coupled to mass spectrometry (GC-MS).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Inhalation - Aquatic Chronic 2 - Asp. Tox. 1 - Eye Irrit. 2 - Flam. Liq. 3 - Skin Irrit. 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 2

Flash Point(F)

118.4 °F - closed cup

Flash Point(C)

48.0 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCG4534
BCCB7272
BCBR9662V

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