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T8533

Sigma-Aldrich

o-Tolidine

≥95% purity, powder or chunks

Sinonimo/i:

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

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About This Item

Formula condensata:
[-C6H3(CH3)-4-NH2]2
Numero CAS:
Peso molecolare:
212.29
Beilstein:
2210640
Numero CE:
Numero MDL:
Codice UNSPSC:
12171500
ID PubChem:
NACRES:
NA.47

product name

o-Tolidine, ≥95%

Livello qualitativo

Saggio

≥95%

Forma fisica

powder or chunks

Colore

white to light brown

Punto di fusione

128-131 °C (lit.)

Solubilità

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

applicazioni

diagnostic assay manufacturing
hematology
histology

Temperatura di conservazione

room temp

Stringa SMILE

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
NUIURNJTPRWVAP-UHFFFAOYSA-N

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Descrizione generale

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.

Applicazioni

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.

Attenzione

May be carcinogenic.

Avvertenze

Danger

Indicazioni di pericolo

Classi di pericolo

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

Codice della classe di stoccaggio

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

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

212.0 °F - closed cup

Punto d’infiammabilità (°C)

100 °C - closed cup

Dispositivi di protezione individuale

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


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Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, 13(2), 177-179 (2001-04-06)
Eight different diets were each fed to 6 cats to evaluate the effect on a guaiac and an o-tolidine fecal occult blood test. Fecal samples were collected from day 5 through day 7. Canine blood or pure cottage cheese were

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