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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/REAXYS Number:
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%

signalword

Danger

Hazard Classifications

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

Storage Class

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

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

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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