Pyrrole 99% CAS 109-97-7

Pyrrole 99% – Versatile Heterocyclic Intermediate

Basic Information

• CAS Number: 109-97-7

• Molecular Formula: C₄H₅N

• Molecular Weight: 67.09 g/mol

• Appearance: Colorless liquid when freshly distilled; turns pale yellow to brown on exposure to light, moisture, or air over time.

• Freezing Point: -23°C

• Boiling Point: 130–131°C

• Flash Point: 33°C (closed cup) – flammable liquid.

• Solubility: Soluble in alcohol, benzene, and ether; sparingly soluble in water.

• Odor: Characteristic chloroform-like smell.

Overview
Pyrrole is a five-membered heterocyclic aromatic compound containing one nitrogen atom. It is an important building block in organic synthesis due to its reactive nature and ability to participate in electrophilic substitution reactions. Pyrrole is used as a precursor for various pharmaceuticals, agrochemicals, and specialty materials.

Applications

• Pharmaceutical synthesis: Key intermediate in the production of drugs such as atorvastatin, and other bioactive molecules.

• Flavors and fragrances: Used in the synthesis of certain aroma compounds.

• Electronic chemicals: Intermediate for conductive polymers (e.g., polypyrrole) used in electronic devices, sensors, and antistatic coatings.

• Agrochemicals: Precursor for fungicides and other crop protection agents.

• Organic synthesis: Building block for more complex heterocyclic systems.

Handling and Storage

• Pyrrole is sensitive to light and air; store in amber glass containers under inert atmosphere (nitrogen) to prevent discoloration and degradation.

• Keep away from ignition sources, oxidizers, and strong acids.

• Store in a cool, well-ventilated area; comply with flammable liquid storage regulations.

• Shelf life: 6 months when stored under recommended conditions.

Safety
Flammable liquid; harmful if swallowed or inhaled. May cause skin and eye irritation. Use with adequate ventilation; wear proper personal protective equipment (gloves, goggles, lab coat). In case of spillage, absorb with inert material and dispose of properly.

Packaging
Available in 100 mL, 500 mL, 1 L, and 5 L bottles, as well as bulk containers upon request.

Quality Assurance
Each batch is analyzed for purity (GC), water content, and color to ensure consistent quality.