2,2'-Dipyridyl

  • 2,2'-Bipyridine
  • 2-(2-Pyridyl)pyridine
Formula
C10H8N2
Structure
Description
White crystals.
Uses
As a reagent for the determination of iron.

Registry Numbers and Inventories.
CAS
366-18-7
EC (EINECS/ELINCS)
206-674-4
EC Class
toxic
R 20/21/22 36/37/38
S 22 26 36/37/39
RTECS
DW1750000
RTECS class
Agricultural Chemical and Pesticide; Tumorigen; Drug; Mutagen; Reproductive Effector
UN (DOT)
2811
Merck
13,3382
Beilstein/Gmelin
113089
Beilstein Reference
5-23-08-00016
Swiss Giftliste 1
G-8576
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C10H8N2
Formula mass
156.19
Melting point, °C
70 - 72
Boiling point, °C
273
Vapor pressure, mmHg
1E-5
Density
1.326 g/cm3 (-150 C)
Solubility in water
5 g/L
pKa/pKb
9.67 (pKb)
Heat of fusion
19.9 kJ/mol
Heat of vaporization
41.55 kJ/mol
Heat of combustion
-186 kJ/mol

Hazards and Protection.
Storage
Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not ingest or inhale.
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. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Provide ventilation.
Disposal code
3
Stability
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities
Strong oxidizers.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C
121
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. Runoff from fire control or dilution water may cause pollution. Extinguishing media: Use agent most appropriate to extinguish fire. In case of fire, use water spray, dry chemical, carbon dioxide, or alcohol-resistant foam.
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
2
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
3
Exposure effects
No data were available to assess the potential effects of exposure to this agent during pregnancy or lactation. <br>Animal studies on chick for substituted pyridines have shown teratogenicity. Injected chicken eggs develop leg and skeletal malformations.
   Ingestion
Harmful if swallowed. May cause irritation of the digestive tract.
   Inhalation
Dust is irritating to the respiratory tract.
   Skin
Causes skin irritation.
   Eyes
Causes eye irritation.

First aid
 
   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.
   Inhalation
Remove from exposure to fresh air immediately. 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.

Transport.
UN number
2811
Response guide
Hazard class
6.1
Packing Group
I; II; III
 
9. Aromatic amines
HS Code
2933 39 99