m-Xylene-alpha,alpha'-diamine

  • 1,3-bis(Aminomethyl)benzene
  • 1,3-Benzenedimethanamine
  • m-Phenylenebis(methylamine)
  • m-Xylylenediamine
Formula
C8H12N2
Structure
Description
Colorless to yellow liquid.
Uses
Curing agent for epoxy resins, a source of m-xylylene diisocyanate.

Registry Numbers and Inventories.
CAS
1477-55-0
EC (EINECS/ELINCS)
216-032-5
RTECS
PF8970000
RTECS class
Primary Irritant
UN (DOT)
3267
Beilstein/Gmelin
1099911
Beilstein Reference
4-13-00-00293
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C8H12N2
Formula mass
136.22
Melting point, °C
112
Boiling point, °C
247
Vapor pressure, mmHg
0.03
Vapor density (air=1)
4.7
Critical temperature
474
Critical pressure
40.8
Density
1.0502 g/cm3 (20 C)
Solubility in water
Miscible
Refractive index
1.5718 (20 C)
pKa/pKb
4.31 (pKb)
Partition coefficient, pKow
-0.04
Heat of vaporization
48.4 kJ/mol

Hazards and Protection.
Storage
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.
Handling
Wash thoroughly after handling. Use only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Discard contaminated shoes.
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
Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Oxidizing agents, acids, acid chlorides, acid anhydrides, chloroformates.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
112.8
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.
Fire potential
Combustible material: may burn but does not ignite readily.
Hazards
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.
Health
3
 
Flammability
0
 
 
Reactivity
0
 

Health.
Exposure limit(s)
NIOSH REL: C 0.1 mg/m3 [skin]
Exposure effects
   Ingestion
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May be harmful if swallowed.
   Inhalation
Harmful if inhaled. Causes chemical burns to the respiratory tract.
   Skin
Causes skin burns. May be harmful if absorbed through the skin.
   Eyes
Causes eye burns.

First aid
 
   Ingestion
Never give anything by mouth to an unconscious person. Get medical aid immediately. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
   Inhalation
Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
   Skin
Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.
   Eyes
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).

Transport.
UN number
3267
Response guide
Hazard class
8
Packing Group
I; II; III
 
9. Aromatic amines