Skip to Content
Merck
CN
All Photos(1)

Documents

Safety Information

31659

Supelco

o-Tolidine

analytical standard

Synonym(s):

3,3′-Dimethylbenzidine, 4,4′-Bianisidine

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
[-C6H3(CH3)-4-NH2]2
CAS Number:
119-93-7
Molecular Weight:
212.29
Beilstein:
2210640
EC Number:
204-358-0
MDL number:
MFCD00014773
UNSPSC Code:
41116107
PubChem Substance ID:
329753869
NACRES:
NA.24

grade

analytical standard

Quality Level

100

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

128-131 °C (lit.)

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

SMILES string

Cc1cc(ccc1N)-c2ccc(N)c(C)c2

InChI

1S/C14H16N2/c1-9-7-11(3-5-13(9)15)12-4-6-14(16)10(2)8-12/h3-8H,15-16H2,1-2H3

InChI key

NUIURNJTPRWVAP-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

General description

o-Tolidine is widely used in the aniline dye industry for the synthesis of different azo dyes.

Application

o-Tolidine (3,3′-dimethylbenzidine) may be used as an analytical reference standard for the determination of the analyte formed from azo colorants in toy products by high-performance liquid chromatography with UV detection.
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.
Sensitive colorimetric reagent for gold and for free chlorine in water.

Warning

May be carcinogenic.

Signal Word

Danger

Hazard Statements

H302,H350,H411

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Carc. 1B

WGK

WGK 3

Flash Point(F)

closed cup

Flash Point(C)

closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCL0480
BCCB2039
BCBZ7832
SZBE078XV
SZBC340XV

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Carcinogenic properties of orthotolidine (3, 3?-dimethylbenzidine).
Pliss GB and Zabezhinsky MA
Journal of the National Cancer Institute, 45(2), 283- 295 (1970)
Dyes metabolized to 3,3'-dimethylbenzidine (3,3'-dimethylbenzidine dye class.
Report on carcinogens : carcinogen profiles, 10, 105-106 (2004-08-25)
Zhijun Cao et al.
Biosensors & bioelectronics, 23(3), 348-354 (2007-06-06)
The electrooxidation of o-tolidine (oTD) was investigated via the electrochemical quartz crystal microbalance (EQCM) technique. The formation and breakage of the poorly soluble charge-transfer complex (CTC) occurred during the redox switching of oTD, and the CTC precipitation on and its
A J Elberger et al.
Journal of neuroscience methods, 45(3), 227-238 (1992-12-01)
Studies of pathway microcircuitry often require electron microscope analysis. To facilitate these analyses, methods for labeling cells in their entirety are extremely useful. Furthermore, such a method would be most useful if the label would be completely confined by the
Dyes metabolized to 3,3'-dimethylbenzidine (3,3'-dimethylbenzidine dye class).
Report on carcinogens : carcinogen profiles, 11, III106-III107 (2004-01-01)
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service