2-Picoline

  • 2-Methylpyridine
  • alpha-Picoline
  • o-Picoline
Formula
C6H7N
Structure
Description
Colorless liquid with a strong, unpleasant odor.
Uses
Intermediate in dye and resins industries, solvent.

Registry Numbers and Inventories.
CAS
109-06-8
EC (EINECS/ELINCS)
203-643-7
EC Index Number
613-036-00-2
EC Class
Flammable; Harmful; Irritant
R 10 20/21/22 36/37
RTECS
TJ4900000
RTECS class
Mutagen; Primary Irritant
UN (DOT)
2313
Merck
12,7554
Beilstein/Gmelin
104581
Beilstein Reference
5-20-05-00464
RCRA
U191
Swiss Giftliste 1
G-3181
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H7N
Formula mass
93.13
Melting point, °C
-70
Boiling point, °C
129.5
Vapor pressure, mmHg
14 (25 C)
Vapor density (air=1)
3.21
Odor Threshold Odor threshold 0.05 mg/m3
Density
0.944 g/cm3 (20 C)
Solubility in water
Miscible
Refractive index
1.501 (20 C)
pKa/pKb
8.05 (pKb)
Partition coefficient, pKow
1.19
Heat of vaporization
36.2 kJ/mol

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling
Wash thoroughly after handling. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
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. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code
5
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, nitrogen.

Fire.
Flash Point,°C
28
Autoignition, °C
535
Upper exp. limit, %
8.6
Lower exp. limit, %
1.4
Fire fighting
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential
NFPA-moderately flammable. Flammable. Will burn. May be ignited by heat, sparks, and flames. Flammable vapor may spread away from spill. Picoline will ignite at 39 C.
Hazards
Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products
When heated to decompo- sition, emits toxic fumes of cyanide.
Health
3
 
Flammability
3
 
 
Reactivity
0
 

Health.
Exposure limit(s)
PDK (as mixture of isomers): 5 mg/m3 (USSR 1991).
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
May cause irritation of the digestive tract. May be harmful if swallowed. Intoxication may include weight loss, diarrhea, weakness, ataxia, and unconsciousness.
   Inhalation
Causes irritation of mucous membrane. Vapors may cause dizziness or suffocation. Exposure may give rise to flushing of face, skin rash, an increase in heart and respiration rates, headaches, giddiness, nausea, and vomiting.
   Skin
Causes skin irritation. Harmful if absorbed through the skin.
   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 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
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   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
2313
Response guide
Hazard class
3
Packing Group
III
 
USCG CHRIS Code
MPR
 
9 Aromatic amines
HS Code
2933 39 99
 
IMO Chemical Code
17
IMO Pollution Category
D
IMO Hazard code
S