1,1,1-trifluoroethane

C2H3F3

CAS420-46-2

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Identification

CAS Number
420-46-2
EC Number
206-996-5
UN Number
2035
PubChem CID
9868

Physical-chemical properties

Molecular Formula
C2H3F3
Molar Mass
84.04 g/mol
IUPAC Name
1,1,1-trifluoroethane

Chemical Identifiers

InChI
InChI=1S/C2H3F3/c1-2(3,4)5/h1H3
InChI Key
UJPMYEOUBPIPHQ-UHFFFAOYSA-N

Overview

1,1,1-trifluoroethane (CAS 420-46-2) is a fluorinated hydrocarbon with exceptional chemical stability and low toxicity profile. This organofluorine compound, with the molecular formula C2H3F3, represents an important member of the hydrofluorocarbon (HFC) family widely utilized across various industrial applications. The compound features three fluorine atoms bonded to a single carbon atom, creating a highly stable trifluoromethyl group that imparts unique chemical and physical properties to the molecule. 1,1,1-trifluoroethane exhibits remarkable chemical inertness under normal conditions, making it particularly valuable in applications requiring non-reactive solvents or propellants. Its molecular weight of 84.04 g/mol and favorable safety profile distinguish it from many conventional organic solvents. Unlike more hazardous substances, this compound presents minimal health risks when handled properly, contributing to its growing acceptance in industrial processes where worker safety is paramount. The compound's physical properties include excellent solvency characteristics for various organic materials, low boiling point, and minimal environmental persistence. These attributes make it suitable for precision cleaning applications, aerosol propellant systems, and specialized extraction processes. In pharmaceutical manufacturing, 1,1,1-trifluoroethane serves as a processing aid and intermediate, while the electronics industry utilizes it for component cleaning and surface preparation. Industrial applications also extend to foam blowing agent formulations and refrigeration systems, where its thermodynamic properties provide efficient heat transfer characteristics. While sharing some applications with compounds like nitrous oxide in pressurized systems, 1,1,1-trifluoroethane offers superior chemical compatibility and stability. OYSI maintains reliable supplies of high-purity 1,1,1-trifluoroethane to support diverse European industrial requirements, ensuring consistent quality for critical manufacturing processes.

Safety & Classification

No Hazard Classification

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

Transport (ADR)

UN Number2035
ADR Class2
Packing Group
Tunnel CodeB/D
Proper Shipping Name1,1,1-Trifluorethan, unter Druck verflüssigt
Marine PollutantNo

Frequently Asked Questions

What is 1,1,1-trifluoroethane?

1,1,1-trifluoroethane is a hydrofluorocarbon (HFC) compound with the molecular formula C2H3F3 and CAS number 420-46-2. This fluorinated organic compound has a molecular weight of 84.04 g/mol and belongs to the family of refrigerant gases. It is commonly known as HFC-143a in the refrigeration industry and serves as an important industrial chemical with specific applications in cooling systems and as a propellant.

What are the physicochemical properties of 1,1,1-trifluoroethane?

1,1,1-trifluoroethane is a colorless gas at room temperature with a faint, sweet odor. It has a boiling point of approximately -47°C and is poorly soluble in water but soluble in organic solvents. The compound is non-flammable under normal conditions and exhibits good chemical stability. Its vapor density is higher than air, and it can be liquefied under pressure, making it suitable for storage and transport in pressurized containers.

What is 1,1,1-trifluoroethane used for?

1,1,1-trifluoroethane is primarily used as a refrigerant in commercial and industrial cooling systems, particularly in low-temperature applications. It serves as a component in refrigerant blends for air conditioning and heat pump systems. Additionally, it functions as a propellant in aerosol applications and as a blowing agent in foam production. The compound is also utilized in specialized cleaning applications and as an intermediate in chemical synthesis processes.

How to handle 1,1,1-trifluoroethane safely?

1,1,1-trifluoroethane should be handled in well-ventilated areas to prevent accumulation of vapors. Personnel should wear appropriate personal protective equipment including safety glasses and protective gloves when handling pressurized containers. Avoid breathing vapors and ensure adequate ventilation in enclosed spaces. Use proper lifting techniques for heavy cylinders and secure containers during transport. Regular monitoring of workplace air quality is recommended in areas where the substance is frequently used.

How to store 1,1,1-trifluoroethane correctly?

1,1,1-trifluoroethane should be stored in a cool, dry, well-ventilated area away from heat sources and direct sunlight. Pressurized containers must be secured upright and protected from physical damage. Storage areas should maintain temperatures below 50°C to prevent excessive pressure buildup. Keep containers away from incompatible materials and ensure adequate spacing between cylinders. Storage facilities should have appropriate ventilation systems and leak detection equipment for safety monitoring.

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

1,1,1-trifluoroethane exposure requires immediate removal of the affected person to fresh air if vapors are inhaled. For skin contact with liquid form, remove contaminated clothing and flush the affected area with lukewarm water. In case of eye contact, rinse thoroughly with clean water for at least 15 minutes. If symptoms persist or breathing difficulties occur, seek immediate medical attention. Do not induce vomiting if ingested and consult medical professionals promptly.

How to dispose of 1,1,1-trifluoroethane appropriately?

1,1,1-trifluoroethane disposal must comply with local environmental regulations and waste management guidelines. The substance should not be released directly into the atmosphere due to its greenhouse gas potential. Proper disposal involves recovery and recycling through authorized waste management facilities specializing in fluorinated gases. Empty containers should be depressurized safely and disposed of according to local regulations. Contact certified waste disposal companies for proper handling and destruction of this HFC compound.

How to transport 1,1,1-trifluoroethane?

1,1,1-trifluoroethane is classified under ADR Class 2 for transport as a compressed gas. Transportation requires appropriate pressure vessels designed for gas transport and proper labeling according to dangerous goods regulations. Vehicles must carry appropriate safety equipment and drivers need ADR certification for transporting dangerous goods. Containers should be secured to prevent movement during transport and protected from temperature extremes. Proper documentation and emergency response information must accompany shipments.

Is 1,1,1-trifluoroethane subject to specific regulations?

1,1,1-trifluoroethane is subject to various environmental and safety regulations including REACH registration requirements in Europe. As an HFC, it falls under the EU F-Gas Regulation which controls its use and emission to reduce greenhouse gas impact. The substance requires proper classification and labeling under CLP regulations. Companies handling this compound must comply with quota systems and reporting requirements. It is not classified as a SVHC substance under current regulations.

Where to buy 1,1,1-trifluoroethane in Europe?

1,1,1-trifluoroethane is available through OYSI, a specialized European distributor of technical chemicals and industrial gases. OYSI provides reliable supply chains across Europe with proper documentation and regulatory compliance. As a professional chemical distributor, OYSI ensures quality products meeting industry standards and provides technical support for applications. Contact OYSI directly for availability, specifications, and delivery options tailored to your specific requirements and location within Europe.

Data Sources

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