Cyclopentanol

C5H10O

cyclopentanol

CAS96-41-3

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Identification

CAS Number
96-41-3
EC Number
202-504-8
UN Number
2244
PubChem CID
7298

Physical-chemical properties

Molecular Formula
C5H10O
Molar Mass
86.13 g/mol
IUPAC Name
cyclopentanol

Chemical Identifiers

InChI
InChI=1S/C5H10O/c6-5-3-1-2-4-5/h5-6H,1-4H2
InChI Key
XCIXKGXIYUWCLL-UHFFFAOYSA-N

Overview

Cyclopentanol (CAS 96-41-3) is a cyclic secondary alcohol with five carbon atoms in its ring structure and characteristic hydroxyl functionality. This colorless liquid compound belongs to the family of cycloalkanols and serves as an important intermediate in various chemical synthesis processes. As a cyclic alcohol, cyclopentanol exhibits typical properties of secondary alcohols while maintaining the structural stability provided by its five-membered ring configuration. The compound displays moderate polarity due to its hydroxyl group, enabling it to participate in hydrogen bonding and making it miscible with many polar and moderately polar solvents. Its molecular structure contributes to its utility as a building block in organic synthesis, where it can undergo typical alcohol reactions including oxidation, esterification, and substitution processes. From a safety perspective, cyclopentanol is classified under ADR Class 3, indicating its flammable nature, though it does not require specific GHS hazard pictogrammes or signal words under current classification systems. Standard precautions for handling flammable organic compounds should be observed, including proper ventilation, ignition source control, and appropriate personal protective equipment. Industrial applications of cyclopentanol primarily focus on its role as a chemical intermediate in pharmaceutical synthesis, specialty chemical production, and as a solvent in specific formulations. The compound finds use in the manufacture of various organic compounds where its cyclic structure provides desired molecular properties. In some applications, it may be considered alongside other chemical intermediates such as 2-ethylbutyl acetate in solvent systems or compared to other cyclic alcohols in synthesis pathways. OYSI maintains reliable supply chains for cyclopentanol, ensuring consistent availability for European industrial customers requiring this specialized chemical intermediate.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Transport (ADR)

UN Number2244
ADR Class3
Packing GroupIII
Tunnel CodeD/E
Proper Shipping NameCyclopentanol
Marine PollutantNo

Frequently Asked Questions

What is cyclopentanol?

Cyclopentanol is a cyclic secondary alcohol with the molecular formula C5H10O and CAS number 96-41-3. It consists of a five-membered carbon ring with one hydroxyl group attached. With a molecular weight of 86.13 g/mol, this organic compound belongs to the cycloalcohol family and serves as an important intermediate in organic synthesis and industrial applications.

What are the physicochemical properties of cyclopentanol?

Cyclopentanol is a colorless to pale yellow liquid at room temperature with a characteristic mild alcoholic odor. It has moderate solubility in water due to its hydroxyl group and is miscible with most organic solvents including ethanol, ether, and acetone. The compound exhibits typical secondary alcohol properties and can undergo standard alcohol reactions such as oxidation and esterification.

What is cyclopentanol used for?

Cyclopentanol is primarily used as an intermediate in organic synthesis for pharmaceutical and fine chemical manufacturing. It serves as a building block for producing various cyclic compounds, pharmaceuticals, and specialty chemicals. Additionally, it finds applications in the synthesis of fragrances, flavoring agents, and as a solvent in specific industrial processes where cyclic alcohols are required.

How to handle cyclopentanol safely?

Cyclopentanol should be handled with standard chemical safety precautions including wearing appropriate personal protective equipment such as safety goggles, chemical-resistant gloves, and protective clothing. Work in well-ventilated areas or under fume hoods to avoid inhalation of vapors. Avoid contact with skin, eyes, and clothing. Keep away from heat sources, sparks, and open flames as it is flammable.

How to store cyclopentanol correctly?

Cyclopentanol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and ignition sources. Keep containers away from incompatible materials such as strong oxidizing agents and acids. Store at room temperature in original containers with proper labeling. Ensure storage areas comply with local fire safety regulations for flammable liquids.

What to do in case of contact with cyclopentanol?

In case of skin contact with cyclopentanol, immediately wash the affected area with plenty of soap and water for at least 15 minutes. For eye contact, flush immediately with clean water for 15 minutes and seek medical attention. If inhaled, move the person to fresh air and seek medical advice if symptoms persist. In case of ingestion, do not induce vomiting and seek immediate medical attention.

How to dispose of cyclopentanol appropriately?

Cyclopentanol waste must be disposed of according to local and national environmental regulations as a flammable organic waste. Do not pour down drains or into the environment. Contact licensed waste disposal companies for proper treatment and disposal. Small quantities may be incinerated in approved facilities. Always consult local environmental authorities for specific disposal requirements and approved waste management facilities.

How to transport cyclopentanol?

Cyclopentanol is classified under ADR Class 3 (flammable liquids), Packing Group III for transportation. It must be transported in approved containers and packaging that meet UN specifications. Vehicles must comply with ADR regulations for flammable liquids including proper placarding, documentation, and driver training. Ensure proper securing of containers and emergency equipment availability during transport.

Is cyclopentanol subject to specific regulations?

Cyclopentanol is subject to standard chemical regulations including REACH registration in Europe for quantities above one tonne per year. It is not classified as a SVHC (Substance of Very High Concern) and does not have specific GHS hazard classifications. However, it must comply with general chemical safety regulations, workplace safety standards, and transportation regulations as a flammable substance.

Where to buy cyclopentanol in Europe?

Cyclopentanol is available through OYSI, a European distributor of technical chemicals serving industrial customers across Europe. OYSI provides quality chemical products with proper documentation and regulatory compliance. For specific quantities, technical specifications, and availability, contact OYSI directly through their sales channels. They can provide guidance on packaging options and delivery arrangements for your specific requirements.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.