Pyrrolidine

  • Tetrahydropyrrole
Formula
C4H9N
Structure
Description
A colorless to pale yellow liquid with an ammonia-like odor.
Uses
Chemical intermediate for pharmaceuticals, fungicides, insecticides, rubber accelerators, citrus decay control, curing agent for epoxy resins.

Registry Numbers and Inventories.
CAS
123-75-1
EC (EINECS/ELINCS)
204-648-7
EC Class
highly flammable, harmful, corrosive
R 11 20/21/22 35
S 16 26 28 36/37 45
RTECS
UX9650000
RTECS class
Mutagen
UN (DOT)
1922
Merck
12,8199
Beilstein/Gmelin
102395
Beilstein Reference
5-20-01-00162
Swiss Giftliste 1
G-8710
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed

Properties.
Formula
C4H9N
Formula mass
71.12
Melting point, °C
-63
Boiling point, °C
87
Vapor pressure, mmHg
63 (25 C)
Vapor density (air=1)
2.45
Saturation Concentration
466 g/m3 (20 C)
Critical temperature
295
Critical pressure
56.30
Density
0.879 g/cm3 (0 C)
Solubility in water
Miscible
Viscosity
0.70 cp (25 C)
Surface tension
29.65 g/s2 (20 C)
Refractive index
1.44023 (20 C)
pKa/pKb
2.74 (pKb)
Partition coefficient, pKow
0.37
Heat of fusion
8.6 kJ/mol
Heat of vaporization
37.64 kJ/mol
Heat of combustion
-2821 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 only in a well ventilated area. Ground and bond containers when transferring material. 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. Do not ingest or inhale. 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.
Disposal code
5
Stability
Stable under normal temperatures and pressures.
Incompatibilities
Acids, acid chlorides, acid anhydrides, strong oxidizing agents.
Decomposition
Nitrogen oxides, carbon monoxide, carbon dioxide.

Fire.
Flash Point,°C
3
Autoignition, °C
345
Upper exp. limit, %
10.6
Lower exp. limit, %
1.6
Fire fighting
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use alcohol foam, dry chemical or carbon dioxide.
Fire potential
Flammable/combustible material.
Hazards
May be ignited by heat, sparks or flames. 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. May polymerize explosively when heated or involved in a fire. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water.
Combustion products
Fire will produce irritating, corrosive and/or toxic gases.
Health
2
 
Flammability
3
 
 
Reactivity
1
 

Health.
Poison_Class
2
Exposure effects
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion.
   Ingestion
Harmful if swallowed. Ingestion causes irritation of the gastrointestinal tract. Ingestion may cause vascular disorders.
   Inhalation
Exposure may result in irritation, excitement, and convulsions.
   Skin
May cause severe irritation and possible burns.
   Eyes
May cause severe eye irritation. May cause eye burns. Lachrymator.

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 immediately. Immediately flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and 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.

Transport.
UN number
1922
Response guide
Hazard class
3
Packing Group
II
 
HS Code
2933 99 90
 
Std. Transport #
4909280