1,1,1,2,2-pentafluoroethane

C2HF5

CAS354-33-6

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Identification

CAS Number
354-33-6
EC Number
206-557-8
UN Number
3220
PubChem CID
9633

Physical-chemical properties

Molecular Formula
C2HF5
Molar Mass
120.02 g/mol
IUPAC Name
1,1,1,2,2-pentafluoroethane

Chemical Identifiers

InChI
InChI=1S/C2HF5/c3-1(4)2(5,6)7/h1H
InChI Key
GTLACDSXYULKMZ-UHFFFAOYSA-N

Overview

1,1,1,2,2-pentafluoroethane (CAS 354-33-6) is a fluorinated hydrocarbon refrigerant with excellent thermodynamic properties and zero ozone depletion potential. This pentafluoroethane compound represents a critical component in modern refrigeration and cooling applications, belonging to the hydrofluorocarbon (HFC) family. With its molecular formula C2HF5 and molecular weight of 120.02 g/mol, this colorless gas exhibits exceptional chemical stability and thermal performance characteristics that make it highly valuable across various industrial sectors. The substance demonstrates favorable safety properties with no assigned GHS hazard classification or signal words, though it remains classified under ADR Class 2 for transportation purposes due to its gaseous nature under standard conditions. Its non-toxic profile and environmental compatibility, particularly its zero impact on stratospheric ozone, position it as a preferred alternative to older refrigerant technologies. Primary industrial applications include use as a refrigerant in commercial and industrial cooling systems, as a component in refrigerant blends for enhanced performance characteristics, and as a specialty solvent in precision cleaning applications. The compound's thermodynamic properties make it particularly suitable for low-temperature refrigeration systems where efficiency and environmental compliance are paramount. Unlike simpler gases such as nitrous oxide, pentafluoroethane offers superior heat transfer capabilities and chemical inertness in demanding industrial environments. The substance finds additional applications in foam blowing processes and as a propellant in specialized aerosol formulations, where its non-flammable nature and controlled evaporation rate provide distinct operational advantages. OYSI maintains reliable supply chains for 1,1,1,2,2-pentafluoroethane to support diverse European industrial requirements.

Safety & Classification

No Hazard Classification

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

Transport (ADR)

UN Number3220
ADR Class2
Packing Group
Tunnel CodeC/E
Proper Shipping NamePentafluorethan, unter Druck verflüssigt
Marine PollutantNo

Frequently Asked Questions

What is 1,1,1,2,2-pentafluoroethane?

1,1,1,2,2-pentafluoroethane is a hydrofluorocarbon (HFC) with the molecular formula C2HF5 and CAS number 354-33-6. This synthetic fluorinated compound has a molecular weight of 120.02 g/mol and belongs to the family of organofluorine compounds. It is characterized by its five fluorine atoms attached to a two-carbon ethane backbone, making it a highly fluorinated derivative of ethane with unique thermodynamic properties.

What are the physicochemical properties of 1,1,1,2,2-pentafluoroethane?

1,1,1,2,2-pentafluoroethane is a colorless gas at room temperature with low toxicity characteristics. It exhibits excellent chemical stability due to the strong carbon-fluorine bonds and has low flammability. The compound is relatively inert under normal conditions, has poor solubility in water but good solubility in organic solvents, and demonstrates favorable thermodynamic properties including low boiling point and appropriate vapor pressure for industrial applications.

What is 1,1,1,2,2-pentafluoroethane used for?

1,1,1,2,2-pentafluoroethane is primarily used as a refrigerant in commercial and industrial cooling systems, particularly as a component in refrigerant blends. It serves as a replacement for ozone-depleting substances in air conditioning and refrigeration applications. Additionally, it finds use as a foam blowing agent in the production of insulation materials, as a propellant in aerosol applications, and in specialized industrial processes requiring inert atmospheres.

How to handle 1,1,1,2,2-pentafluoroethane safely?

1,1,1,2,2-pentafluoroethane should be handled in well-ventilated areas using appropriate personal protective equipment including safety glasses and protective gloves. Workers should avoid prolonged inhalation and ensure adequate ventilation to prevent accumulation of vapors. Standard industrial hygiene practices should be followed, including proper training on gas handling procedures, use of gas detection equipment where appropriate, and implementation of emergency response procedures for potential leaks or releases.

How to store 1,1,1,2,2-pentafluoroethane correctly?

1,1,1,2,2-pentafluoroethane should be stored in approved pressure vessels in cool, dry, well-ventilated areas away from heat sources and direct sunlight. Storage areas must be designed to contain potential leaks and equipped with appropriate ventilation systems. Containers should be properly labeled, regularly inspected for integrity, and stored upright when possible. Adequate separation from incompatible materials and compliance with local pressure vessel regulations are essential for safe storage.

What to do in case of contact with 1,1,1,2,2-pentafluoroethane?

1,1,1,2,2-pentafluoroethane exposure typically requires moving the affected person to fresh air immediately if inhalation occurs. In case of skin contact with liquid form, the area should be warmed gradually to prevent frostbite-like injuries. Eye contact should be treated by flushing with clean water. If breathing difficulties occur, oxygen should be administered by qualified personnel. Medical attention should be sought for any significant exposure or if symptoms persist.

How to dispose of 1,1,1,2,2-pentafluoroethane appropriately?

1,1,1,2,2-pentafluoroethane must be disposed of through licensed waste management facilities equipped to handle fluorinated gases. Recovery and recycling are preferred methods when technically and economically feasible. Destruction should be performed using approved high-temperature incineration or other authorized methods. Release to atmosphere should be minimized due to its greenhouse gas properties. Disposal must comply with local environmental regulations and international protocols governing fluorinated greenhouse gases.

How to transport 1,1,1,2,2-pentafluoroethane?

1,1,1,2,2-pentafluoroethane is classified as ADR Class 2 dangerous goods for transportation purposes. It must be transported in approved pressure containers that meet relevant technical standards and regulations. Proper shipping documentation, labeling, and placarding are required according to ADR regulations. Transportation should be performed by qualified carriers with appropriate training and equipment. Vehicle ventilation and emergency response procedures must be in place during transport operations.

Is 1,1,1,2,2-pentafluoroethane subject to specific regulations?

1,1,1,2,2-pentafluoroethane is subject to REACH regulation in Europe and must comply with registration requirements. It falls under the EU F-Gas Regulation due to its greenhouse gas properties, requiring leak detection, reporting, and recovery measures. The substance is not classified as SVHC under REACH. Users must comply with CLP regulation requirements for classification, labeling, and safety data sheet provisions, as well as relevant environmental protection and occupational safety regulations.

Where to buy 1,1,1,2,2-pentafluoroethane in Europe?

1,1,1,2,2-pentafluoroethane is available through OYSI, a European distributor of specialty chemicals serving industrial customers across the continent. OYSI provides reliable supply chains and technical support for fluorinated compounds to various industries including refrigeration, foam manufacturing, and specialty applications. Professional customers can contact OYSI for product availability, technical specifications, and regulatory compliance support for their specific application requirements in European markets.

Data Sources

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