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T8533

o-Tolidine

Name: <I>o</I>-Tolidine
Brand: SIAL

≥95% purity, powder or chunks

Synonym(s):

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

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About This Item

Linear Formula:

[-C₆H₃(CH₃)-4-NH₂]₂

CAS Number:

119-93-7

Molecular Weight:

212.29

NACRES:

NA.47

PubChem Substance ID:

24900539

UNSPSC Code:

12171500

EC Number:

204-358-0

MDL number:

MFCD00014773

Beilstein/REAXYS Number:

2210640

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Properties

Product Name

o-Tolidine, ≥95%

Quality Level

200

assay

≥95%

form

powder or chunks

technique(s)

titration: suitable

color

white to light brown

mp

128-131 °C (lit.)

solubility

water: slightly soluble 1.3 g/L at 25 °C

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

room temp

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

Description

General description

o-Tolidine is a diacidic dye which is sparingly soluble in water and easily soluble in ether and alcohol. On exposure to chlorine or bromine vapors, it forms an intense blue color. This forms the basis for detection of chlorine, nitrates and hydrogen peroxide in air or water. It turns yellow on reacting with free chlorine. o-Tolidine easily forms acid salts.

Application

o-Tolidine has also been used to determine the presence of laccase activity in T. versicolor fungal colonies.

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

Disclaimer

May be carcinogenic.

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pictograms

GHS08,GHS07,GHS09

signalword

Danger

hcodes

H302,H350,H411

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

WGK 3

flash_point_f

212.0 °F - closed cup

flash_point_c

100 °C - closed cup

ppe

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

pcodes

P202 - P264 - P273 - P280 - P301 + P312 - P308 + P313

Regulatory Information

危险化学品

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Wiley-VCH

Ullmann's Fine Chemicals null

Leo M.L. Nollet

Handbook of Water Analysis (2013)

Purification and Characterization of Laccase from the
White Rot Fungus Trametes versicolor

Moon-Jeong

Journal of Microbiology (2005)

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Global Trade Item Number

SKU	GTIN
T8533-100G	04061835349258
T8533-25G	04061835349265