m-Phenylenediamine

  • 1,3-Phenylenediamine
Formula
1,3-(NH2)2C6H4
Structure
Description
White crystalline solid becoming red on exposure to air.
Uses
Manufacture dyes, rubber curing agents, ion exchange resins, decolorizing resins, formaldehyde condensates, resinous polyamides, block polymers, textile fibers, urethanes, petroleum additives, rubber chemicals, in corrosion inhibitors, in photography, as reagent for gold & bromine.

Registry Numbers and Inventories.
CAS
108-45-2
EC (EINECS/ELINCS)
203-584-7
EC Index Number
612-147-00-3
EC Class
Mutagenic Category 3; Toxic; Irritant; Sensitising; Dangerous for the Environment
R 23/24/25 36 40 43 50/53 68
S 28 36/37 45 60 61
RTECS
SS7700000
RTECS class
Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT)
1673
Merck
12,7437
Beilstein/Gmelin
471357
Beilstein Reference
4-13-00-00079
Swiss Giftliste 1
G-4892
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H8N2
Formula mass
108.14
Melting point, °C
63 - 64
Boiling point, °C
282
Vapor pressure, mmHg
0.003 (25 C)
Vapor density (air=1)
3.7
Density
1.1421 g/cm3 (10 C)
Solubility in water
Very soluble
Viscosity
1.75 cp (125 C)
Refractive index
1.62558 (57.7 C)
pKa/pKb
9.02 (pKb)
Partition coefficient, pKow
-0.33
Heat of fusion
12.0 kJ/mol
Heat of vaporization
52.2 kJ/mol
Heat of combustion
-3498 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store protected from light. Store in a cool, dry area away from incompatible substances.
Handling
Wash thoroughly after handling. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Use with adequate ventilation. Store protected from light.
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.
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.
Disposal code
9
Stability
Unstable in air
Incompatibilities
Strong oxidizing agents.
Decomposition
Carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
148
Autoignition, °C
560
Upper exp. limit, %
9.8
Lower exp. limit, %
1.3
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.
Fire potential
This chemical is combustible.
Hazards
Dust may form explosive mixtures in air
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3
Exposure effects
Prolonged or repeated skin contact may cause dermatitis.
   Ingestion
Harmful if swallowed. May cause irritation of the digestive tract. May cause liver and kidney damage.
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
Causes skin irritation. May be absorbed through the skin in harmful amounts.
   Eyes
May cause eye irritation. May result in corneal injury.

First aid
 
   Ingestion
If victim is conscious and alert, give 2-4 cupfuls of milk or water. Get medical aid. Wash mouth out with water.
   Inhalation
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid if cough or other symptoms appear.
   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.

Transport.
UN number
1673
Response guide
Hazard class
6.1
Packing Group
III
 
9. Aromatic amines
HS Code
2921 51 19
 
Std. Transport #
4925176