Product Identification

Product Name

C.I. 76060

Synonyms

1,4-Benzenediamine
1,4-Diaminobenzene
1,4-Phenylenediamine
p-Aminoaniline

CAS

106-50-3

Formula

C6H8N2

Molecular Weight

108.14

EINECS

203-404-7

RTECS

SS8050000

RTECS Class

Agricultural Chemical and Pesticide; Tumorigen; Mutagen; Human Data; Primary Irritant

Merck

12,7439

Beilstein/Gmelin

742029

Beilstein Reference

4-13-00-00104

EC Index Number

612-028-00-6

EC Class

Toxic; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

White to light purple solid.

Solubility in water

47 g/L

Melting Point

139 - 141

Boiling Point

267

Vapor Pressure

0.008 (25 C)

Density

1.251 g/cm3

pKa/pKb

7.83 (pKb)

Partition Coefficient

-.25

Heat Of Vaporization

50.5 kJ/mol

Heat Of Combustion

-3501 kJ/mol

Usage

Dyeing furs, also in photochemical measurements, accelerating vulcanization, manufacture azo dyes.

Saturation Concentration

Less than 1300 ppm (0.1%) at 20 C (calculated)

Vapor Density

3.72

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

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

Skin

Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.

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. Material darkens on exposure to air.

Handling

Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with skin and eyes. Avoid contact with heat, sparks and flame. Do not ingest or inhale.

Hazards Identification

Inhalation

Dust is irritating to the respiratory tract. May cause asthmatic attacks due to allergic sensitization of the respiratory tract. May cause rhinitis.

Skin

Causes 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. May produce eczematoid contact dermatitis

Eyes

Causes eye irritation. May cause conjunctivitis and keratitis.

Ingestion

Harmful if swallowed. May cause irritation of the digestive tract. May cause liver and kidney damage. Ingestion may cause gastritis, vertigo, tremors, convulsions, and possible coma.

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

Prolonged or repeated skin contact may cause dermatitis. Prolonged or repeated exposure may cause adverse reproductive effects.

Exposure limit(s)

TLV: 0.1 mg/m3 A4 (as TWA) (ACGIH 1997). MAK: 0.1 mg/m3; H, S, IIIB (1996) OSHA PEL: TWA 0.1 mg/m3 skin NIOSH REL: TWA 0.1 mg/m3 skin NIOSH IDLH: 25 mg/m3

Poison Class

2

Fire Fighting Measures

Flash Point

136

Autoignition

400

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. To extinguish fire use water spray, dry chemical, carbon dioxide, or chemical foam.

Upper exp. limit

9.8

Lower exp. limit

1.3

Fire Potential

Combustible when exposed to heat or flame.

Accidental Release Measures

Small spills/leaks

Vacuum or sweep up material and place into a suitable disposal container. Avoid generating dusty conditions. Remove all sources of ignition.

Stability and Reactivity

Disposal Code

9

Stability

Stable under normal temperatures and pressures. Substance undergoes color change upon exposure to light and air.

Incompatibilities

Strong oxidizing agents.

Decomposition

Nitrogen oxides, carbon monoxide, carbon dioxide.

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