CAS 119-93-7 o-Tolidine - Materials / Alfa Chemistry

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o-Tolidine

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Catalog Number

ACM119937-2

CAS Number

119-93-7

Product Name

o-Tolidine

Category

Electroluminescence Materials; Monomers; Polymers

Description

3,3'-dimethylbenzidine appears as white to reddish crystals or crystalline powder or a light tan powder. (NTP, 1992);COLOURLESS CRYSTALS OR RED-TO-BROWN FLAKES.;White to reddish crystals or powder.;White to reddish crystals or powder. [Note: Darkens on exposure to air. Often used in paste or wet cake form. Used as a basis for many dyes.]

IUPAC Name

4-(4-amino-3-methylphenyl)-2-methylaniline

Molecular Weight

212.29g/mol

Molecular Formula

C14H16N2;C14H16N2

Canonical SMILES

CC1=C(C=CC(=C1)C2=CC(=C(C=C2)N)C)N

InChI

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

Boiling Point

392 °F at 760 mm Hg (NTP, 1992);339.0 °C;300 °C;300 °C;392°F;572°F

Melting Point

264 to 268 °F (NTP, 1992);131.5 °C;129-131 °C;131-132 °C;264°F;264°F

Flash Point

244 °C;471°F

Density

1 (NTP, 1992);1.234 g/cu cm;1.2 g/cm³;1

Solubility

less than 1 mg/mL at 66° F (NTP, 1992);0.01 M;In water, 1,300 mg/L at 25 °C;Soluble in alcohol, ether, dilute acids;Solubility in water, g/100ml at 25 °C: 0.13 (poor);0.1%

Application

o-Tolidine, a white to reddish crystal or powder with an aniline-like odor, plays a critical role in the production of various dyes due to its chemical properties. Slightly soluble in water but soluble in alcohol, ether, and dilute acids, this compound is often used in paste or wet cake form, offering versatility in dye manufacturing. Additionally, o-Tolidine is employed in the preparation of polyimide and epoxy resin materials, highlighting its importance in both the dye and materials science industries. Despite being a colorless compound in its pure form, commercial samples might exhibit coloration, and they tend to darken when exposed to air. Its utility is further extended through the synthesis of the compound via a benzidine rearrangement process, starting from a hydrazine derivative derived from 2-nitrotoluene.

Color/Form

Colorless; in technical grades also brownish flakes;White to reddish crystals or powder [Note: Darkens on exposure to air]

Complexity

205

Covalently-Bonded Unit Count

EC Number

204-358-0

Exact Mass

212.131349g/mol

Formal Charge

Heavy Atom Count

ICSC Number

0960

Log P

2.34 (LogP);log Kow = 2.34;2.34

MeSH Entry Terms

2-tolidine;2-tolidine dihydrochloride;2-tolidine dihydrofluoride;2-tolidine hexahydrofluoride;2-tolidine perchlorate;2-tolidine perchlorate (1-);2-tolidine tetrahydrofluoride;3,3'-dimethylbenzidine;o-tolidine;tolidine blue

Monoisotopic Mass

212.131349g/mol

Other Experimental

MP: 264 °F;Barely becomes discolored upon exposure to air. It is chemically resistant to water.;Henry's Law constant = 6.3X10-11 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 1.9X10-10 cu cm/molecule-sec at 25 °C (est)

Rotatable Bond Count

RTECS Number

DD1225000

UNII

63HLO2IV6K

UN Number

3077

Vapor Pressure

1.0X10-6 mm Hg at 25 °C (est);1x10-6 mmHg (est)

XLogP3

2.3

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