N,N-Diethyl-1,4-phenylenediamine Chemical Properties

Melting point:

19-21 °C(lit.)

Boiling point:

115-116 °C5 mm Hg(lit.)

Density 

0.988 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.571(lit.)

Flash point:

>230 °F

storage temp. 

Keep in dark place,Sealed in dry,2-8°C

solubility 

water: insoluble

form 

Liquid or Low Melting Solid

pka

8.21±0.32(Predicted)

color 

Clear yellow-brown to dark brown

Water Solubility 

<0.1 g/100 mL at 19 ºC

BRN 

879361

Stability:

Stability Air and light sensitive. Incompatible with strong oxidizing agents, strong acids.

CAS DataBase Reference

93-05-0(CAS DataBase Reference)

NIST Chemistry Reference

1,4-Benzenediamine, N,N-diethyl-(93-05-0)

EPA Substance Registry System

N,N-Diethyl-p-phenylenediamine (93-05-0)

Safety Information

Hazard Codes 

T

Risk Statements 

25-34

Safety Statements 

26-36-45

RIDADR 

UN 2922 8/PG 2

WGK Germany 

1

RTECS 

SS9275000

HazardClass 

6.1(b)

PackingGroup 

III

HS Code 

29215190

Hazardous Substances Data

93-05-0(Hazardous Substances Data)

MSDS

• Language:English Provider:N,N-Diethyl-1,4-phenylenediamine
• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS

N,N-Diethyl-1,4-phenylenediamine Usage And Synthesis

Description

DPD is a clear liquid. Molecularweight=164-28; Boiling point=260-262℃; Flash point$110℃.

Chemical Properties

dark brown to black solid or liquid, depending upon room temperature

Uses

Dye intermediate, source of diazonium compounds in diazo copying process.

Uses

N,N-Diethyl-p-phenylenediamine has been employed as a reference probe to investigate rapid chlorination rate constants by a stopped-flow spectrophotometric competition kinetics method.

General Description

Reddish brown or black liquid.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

N,N-Diethyl-1,4-phenylenediamine neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

Fire Hazard

N,N-Diethyl-1,4-phenylenediamine is probably combustible.

Safety Profile

Poison by ingestion, skin contact, subcutaneous, and intravenous routes. Human systemic skin effects by skin contact: hemorrhage, allergic dermatitis, and primary irritation. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx. See also AMINES.

Potential Exposure

Used as a dye intermediate and incolor photography. Some p-phenylenediamine compoundshave been used as rubber components, and DFG warns ofdanger of skin sensitization.

First aid

If this chemical gets into the eyes, remove anycontact lenses at once and irrigate immediately for at least15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts theskin, remove contaminated clothing and wash immediatelywith soap and water. Seek medical attention immediately. Ifthis chemical has been inhaled, remove from exposure,begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR ifheart action has stopped. Transfer promptly to a medicalfacility. When this chemical has been swallowed, get medical attention. Give large quantities of water and inducevomiting. Do not make an unconscious person vomit.

storage

Color Code—Blue: Health Hazard/Poison: Store ina secure poison location. Prior to working with DPD youshould be trained on its proper handling and storage. Store in tightly closed containers in a cool, well-ventilated area.Metal containers involving the transfer of this chemicalshould be grounded and bonded. Where possible, automatically pump liquid from drums or other storage containers toprocess containers. Drums must be equipped with self-closingvalves, pressure vacuum bungs, and flame arresters. Use onlynonsparking tools and equipment, especially when openingand closing containers of this chemical. Sources of ignition,such as smoking and open flames, are prohibited where thischemical is used, handled, or stored in a manner that couldcreate a potential fire or explosion hazard. Wherever thischemical is used, handled, manufactured, or stored, useexplosion-proof electrical equipment and fittings.

Shipping

Phenylenediamines require a shipping label of“POISONOUS/TOXIC MATERIALS.” They fall in DOTHazard Class 6.1 and Packing Group III.

Incompatibilities

Contact with strong oxidizers may causefire and explosion hazard.

N,N-Diethyl-1,4-phenylenediamine(93-05-0)Related Product Information

• Diethyl phthalate
• p-Phenylenediamine dihydrochloride
• Mefenpyr-diethyl
• 2,3,5,6-TETRAMETHYL-1,4-PHENYLENEDIAMINE
• 4-Aminodiphenylamine
• N,N-Dimethyl-1,4-phenylenediamine
• N,N'-(1,4-Phenylene)bis(acetoacetamide)
• 1,4-Diamino-2-nitrobenzene
• Diethyl carbonate
• o-Phenylenediamine
• p-Phenylenediamine
• Diethyl malonate
• N,N-Diethylaniline
• N-(4-DIMETHYLAMINO-3,5-DINITROPHENYL)MALEIMIDE
• 1-(4-Nitrophenyl)piperazine
• 2-(5-BROMO-2-PYRIDYLAZO)-5-(DIETHYLAMINO)PHENOL
• ETHYL RED
• Diethyl ether