1,7-Heptanediamine

  • 1,7-Diamino-n-heptane
  • 1,9-Diazanonane
  • 1,7-Diaminoheptane
  • 1,7-Heptamethylenediamine
Formula
H2N(CH2)7NH2
Structure
Description
Colorless to white solid.

Registry Numbers and Inventories.
CAS
646-19-5
EC (EINECS/ELINCS)
211-468-2
EC Class
irritant
S 26 36/37/39 45
UN (DOT)
3263
Beilstein/Gmelin
1734159
Beilstein Reference
4-04-00-01354
New Zealand
Listed
Korea ECL
Listed

Properties.
Formula
C7H18N2
Formula mass
130.23
Melting point, °C
28 - 29
Boiling point, °C
224
Vapor pressure, mmHg
0.09 (25 C)
Density
1.012 g/cm3
Solubility in water
Very soluble
pKa/pKb
3.05 (pKb)
Partition coefficient, pKow
0.57
Heat of fusion
36.95 kJ/mol
Heat of vaporization
46.1 kJ/mol

Hazards and Protection.
Storage
Store in a cool, dry place. Store in a tightly closed container. Corrosives area.
Handling
Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.
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 minimize contact with skin.
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.
Disposal code
3
Stability
No data.
Incompatibilities
Acids, acid chlorides, acid anhydrides, strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
87
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: Use foam, dry chemical, or carbon dioxide.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Contact with metals may evolve flammable hydrogen gas.
Combustion products
Fire may produce irritating, corrosive and/or toxic gases.

Health.
Exposure effects
   Ingestion
May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated.
   Inhalation
Causes respiratory tract irritation.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   Ingestion
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.
   Skin
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
   Eyes
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.

Transport.
UN number
3263
Response guide
Hazard class
8
Packing Group
I; II; III
 
HS Code
2921 29 00