2-Vinylpyridine

  • 2-Ethenylpyridine
Formula
2-(CH2=CH)C5H4N
Structure
Description
Colorless liquid. Pungent unpleasant odor.
Uses
Production of polymers.

Registry Numbers and Inventories.
CAS
100-69-6
EC (EINECS/ELINCS)
202-879-8
EC Class
flammable, toxic, corrosive
R 10 23/24/25 34 42/43
S 26 36/37/39 45
RTECS
UU1040000
RTECS class
Other
UN (DOT)
3073
Beilstein/Gmelin
104505
Beilstein Reference
5-20-06-00211
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C7H7N
Formula mass
105.14
Melting point, °C
-50
Boiling point, °C
159
Vapor pressure, mmHg
2.5
Vapor density (air=1)
3.64
Odor Threshold Odor threshold 0.3 ppm
Critical temperature
384
Critical pressure
43.0
Density
0.9735 g/cm3 (20 C)
Solubility in water
27 g/L
Viscosity
1.13 cp (20 C)
Refractive index
1.5495 (20 C)
pKa/pKb
9.02 (pKb)
Partition coefficient, pKow
1.39

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Deep freeze (below -20 C).
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Depending on the extent of possible contact, workers should be provided with personal protective equipment. Rubber and plastic gloves should not be relied upon to prevent skin contact because pyridine and many of its derivatives penetrate these materials.
Respirators
A charcoal gas mask canister respirator has been found to be effective against a 2% pyridine concentration at 30 L/min for 1 hr.
Small spills/leaks
Make no contact with the spilled material. Fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and ground all equipment. Stop leak if you can do it without risk. A vapor suppressing foam may be used to reduce vapors. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. Use clean non-sparking tools to collect absorbed material.
Disposal code
5
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Strong oxidizing agents.
Decomposition
Decomposition by heat is accompanied by release of dangerous cyanide fumes. When heated to decomposition, emits toxic fumes of nitrogen oxides.

Fire.
Flash Point,°C
51
Autoignition, °C
440
Lower exp. limit, %
1.3
Fire fighting
Use of water spray when fighting fire may be inefficient. Small Fires: Dry chemical, carbon dioxide, water spray or alcohol-resistant foam. Large Fires: Water spray, fog or alcohol-resistant foam.
Fire potential
Fire hazard is moderate.
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 and poison hazard indoors, outdoors or in sewers.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.

Health.
Poison_Class
3 (Strong toxins)
Exposure effects
   Ingestion
Irritation may result in abdominal pain with vomiting, or diarrhea.
   Inhalation
Severe acute intoxications may result in respiratory depression and death.
   Skin
Skin irritation may result from repeated or prolonged exposure or photosensitivity.
   Eyes
Vapors may be irritating to the nose, eyes, and throat.

First aid
 
   Ingestion
The possible benefit of early removal of some ingested material by cautious gastric lavage must be weighed against potential complications of bleeding or perforation. Activated charcoal activated charcoal binds most toxic agents and can decrease their systemic absorption if administered soon after ingestion. Activated charcoal: administer charcoal as a slurry (240 ml water/30 g charcoal). Usual dose: 25 to 100 g in adults/adolescents.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothing and wash exposed area thoroughly with soap and water. A physician should examine the area if irritation or pain persists.
   Eyes
Irrigate exposed eyes with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility.

Transport.
UN number
3073
Response guide
Hazard class
6.1
Packing Group
II
 
HS Code
2933 39 99