Product Identification

Product Name

p-Phenylenediamine dihydrochloride

Synonyms

1,4-Diaminobenzene dihydrochloride
1,4-Phenylenediamine dihydrochloride
4-Aminoaniline dihydrochloride
Durafur Black RC
Fourrine DS
Pelagol CD

CAS

624-18-0

Formula

C6H10Cl2N2

Molecular Weight

181.07

EINECS

210-834-9

RTECS

ST0350000

RTECS Class

Tumorigen; Mutagen

Merck

12,7439

Beilstein/Gmelin

3911749

Beilstein Reference

3-13-00-00104

EC Index Number

612-029-00-1

EC Class

Toxic; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White to slightly reddish crystals or gray powder.

Solubility in water

Soluble

Melting Point

275

Density

>1.0 g/cm3 (20 C)

Usage

Developers for black-and-white & color photography, analytical reagent, antioxidants p-phenylenediamine & deriv.

Vapor Density

6.2

First Aid Measures

Ingestion

Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.

Skin

Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.

Eyes

Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.

Hazards Identification

Inhalation

May cause allergic respiratory reaction. May cause respiratory tract irritation. Inhalation of aniline causes anoxia due to the formation of methemoglobinemia.

Skin

Causes severe skin irritation. May be absorbed through the skin in harmful amounts. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material.

Eyes

Causes severe eye irritation. Contact with the eye may cause sensitization of the ocular structures. May cause ulceration of the the cornea with loss of vision

Ingestion

May cause irritation of the digestive tract. May cause methemoglobinemia, cyanosis, convulsions, and death. Methemoglobinemia is characterized by dizziness, drowsiness, headache, breath shortness, cyanosis with bluish skin, rapid heart rate and chocolate-brown colored blood.

Hazards

When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.

EC Risk Phrase

R 23/24/25 36 43 50/53

EC Safety Phrase

S 28 36/37 45 60 61

UN (DOT)

1673

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

May cause methemoglobinemia, which is characterized by chocolate-brown colored blood, headache, weakness, dizziness, breath shortness, cyanosis, rapid heart rate, unconsciousness and possible death.

Exposure limit(s)

TLV (as 1,4 Benzenediamine): 0.022 ppm; 0.1 mg/m3 (skin) (ACGIH 1992-1993).

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. To extinguish fire, use water, dry chemical, chemical foam, or alcohol-resistant foam. Use agent most appropriate to extinguish fire.

Fire Potential

This material is probably combustible.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures.

Incompatibilities

Strong oxidizing agents.

Decomposition

Hydrogen chloride, nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Combustion Products

Fire may produce irritating, corrosive and/or toxic gases.

Transport Information

UN Number

1673

Hazard Class

6.1

Packing Group

III

HS Code

2921 51 19