o-Tolidine ≥95%

Supplier: SIGMA-ALDRICH MICROSCOPY
Danger

Synonyms: 4,4'-Bi-o-toluidine

M-Clarity™ quality level = MQ200

T8533-100G T8533-25G
T8533-100GEA 250 GBP
T8533-100G T8533-25G
o-Tolidine ≥95%
o-Tolidine

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.


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.


Caution: May be carcinogenic.

Formula: [-C₆H₃(CH₃)-₄-NH₂]₂
MW: 212,29 g/mol
Melting Pt: 128,..131 °C (lit.)
Flash Pt: 100 °C (closed cup)
Storage Temperature: Room Temperature
MDL Number: MFCD00014773
CAS Number: 119-93-7

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Specification Test Results

Appearance (Colour) White to Light Brown
Appearance (Form) Powder or Chunks
Proton NMR spectrum Conforms to Structure
Purity (Titration by HClO4) ≥95 %

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