O-Toluidine

[Appearance] it is colorless or light yellow oily liquid at normal temperature, and turns red brown when exposed to air and sunlight.

[Boiling point] (℃) 200.3

[Melting point] (℃) - 16.3

[Flash point] ℃ (closed type) 85

[Ignition temperature] (℃): 481.67

[Density] d4200.9984

[Refractive index] nD201.572

[Steam pressure] kPa (℃) 0.0346 (25 ℃)

[Upper explosive limit] (%): 7.6

[Lower explosive limit] (%): 1.5

[Viscosity] (MPA · s, 15 ℃): 5.195

[Viscosity] (MPA · s, 25 ℃): 3.390

[Solubility] slightly soluble in water, soluble in ethanol, ether and dilute acid. The solubility in water at 25 ℃ is 1.5g/100ml.

[Stability] stability

[Functional application] mainly used as organic synthesis intermediates such as dyes, as well as analytical reagents, vulcanization accelerators, and saccharin manufacturing.

1) Used for preparing azo dyes and triphenylmethane dyes; For example, it is used to prepare sulfurized blue, sulfurized light yellow GC, sulfurized yellow brown 5g, color phenol as-d, red base RL, large red base g, jujube red base GBC, acid peach 3b, reduced peach R, basic magenta and basic peach T;

2) In the pharmaceutical industry, it is used to prepare o-chloropenicillin, amiodarone, bissouping, ruodin, etc;

3) Pesticide industry is used to synthesize Chlordimeform. It is also used for the synthesis of curing accelerators DT, BG, PR, etc.