o-Phenylenediamine (o-Phenylenediamine)

Bargaining 10-21 09:11 Update

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o-Phenylenediamine

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ik3
OPD
1.2-diaminobenzene
1,2-Benzenediamine
ortho-benzenediamine
o-Phenylenediamine
ek1700
ortho-phenylenediamine
PODA
OPDA
ortho-diaminobenzene

+Expand -Stow

95-54-5

C6H8N2

108.141

29215119

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Nature Description

Colorless monoclinic crystal with darker color in air and sunlight. Melting point 102-103 °c, boiling point 256-258 °c. Slightly soluble in cold water, more soluble in hot water, soluble in ethanol, ether and chloroform. It acts with inorganic acid to generate salts that are easily soluble in water.

257oC

101oC

110oC

<0.1G/100MLAT20oC

Product Applications

As pesticide intermediate, dye intermediate.

Production method

O-phenylenediamine was prepared from O-nitroaniline by sodium sulfide reduction or catalytic hydroreduction. Add 21 sodium sulfide solution and O-nitroaniline into the reduction pot, raise the temperature to 90℃, close the temperature to 105-110 ℃, raise the pressure to 0.1-0.2MPa, stir and reduce for 5 hours, and lower the temperature to below 40℃, filter. Heat and melt filter cake, vacuum distillation, collect 140-210 ℃(7.89kPa) fraction is O-phenylenediamine, yield 70-80. The hydrogenation process is carried out in an autoclave. The reaction temperature is 95-105 ℃, the pressure is about 2MPa, and the hydrogen reaction is carried out for about 1 hour under the action of nickel catalyst until the hydrogen pressure does not decrease. The yield of O-Phenylenediamine is above 97.

Security

Dangerous Goods Marking： N

Safety instructions： S28: immediately after touching the skin, use a large amount of soap solution for washing. S45: If you have an accident or feel uncomfortable, go to the doctor for help immediately (it is better to bring the product container label). S60: the residues and containers of this substance must be treated as hazardous waste. S61: avoid discharging to the environment. Refer to the specific instructions/safety data sheet. S1/2: keep it sealed and keep it away from children. S36/37: Wear suitable protective clothing and gloves.

Hazardous material category code： R36: stimulates eyes. R40: limited evidence indicates its carcinogenic effect. R43: skin contact will produce allergic reactions. R68: the risk of possible irreversible effects R50/53: extremely toxic to aquatic organisms, which may lead to long-term adverse effects on aquatic environment.

Dangerous goods transportation number： UN1673

Symbols： GHS06,GHS08,GHS09

Storage conditions： The warehouse is ventilated cryodrying and stored separately from food raw materials.

Cautionary Statement： P261;P280;P305+P351+P338

Packaging grade： III

Signal word： Danger

Hazard Statement： H301;H312+H332;H317;H319;H341;H351;H410