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380369

Sigma-Aldrich

o-Tolidine dihydrochloride

97%

Synonym(s):

3,3′-Dimethylbenzidine dihydrochloride, 4,4′-Bianisidine dihydrochloride, 4,4′-Diamino-3,3′-dimethylbiphenyl dihydrochloride

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About This Item

Linear Formula:
[-C6H3(CH3)-4-NH2]2 · 2HCl
CAS Number:
612-82-8
Molecular Weight:
285.21
Beilstein:
3713238
EC Number:
210-322-5
MDL number:
MFCD00012960
UNSPSC Code:
12352100
PubChem Substance ID:
24863736

Assay

97%

SMILES string

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

InChI

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

InChI key

LUKPNZHXJRJBAN-UHFFFAOYSA-N

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Application

Sensitive colorimetric reagent for gold and for free chlorine in water.

Warning

May be carcinogenic.

comparable product

Product No.
Description
Pricing

T8533

o-Tolidine, ≥95%

Signal Word

Danger

Hazard Statements

H302,H350,H411

Hazard Classifications

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

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

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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3,3'-Dimethylbenzidine.
Report on carcinogens : carcinogen profiles, 10, 104-105 (2004-08-25)
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 K Cook et al.
American journal of veterinary research, 53(10), 1749-1751 (1992-10-01)
To evaluate the effect of diet on results obtained by use of 2 commercial test kits for detection of occult blood in feces, 5 dogs were fed 7 diets in randomized sequence. Dry and canned diets with various principal ingredients
Dyes metabolized to 3,3'-dimethylbenzidine (3,3'-dimethylbenzidine dye class).
Report on carcinogens : carcinogen profiles, 11, III106-III107 (2004-01-01)
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