Fluoroform

CHF3

fluoroform

CAS75-46-7

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Identification

CAS Number
75-46-7
EC Number
200-872-4
UN Number
1984
PubChem CID
6373

Physical-chemical properties

Molecular Formula
CHF3
Molar Mass
70.01 g/mol
IUPAC Name
fluoroform

Chemical Identifiers

InChI
InChI=1S/CHF3/c2-1(3)4/h1H
InChI Key
XPDWGBQVDMORPB-UHFFFAOYSA-N

Overview

Fluoroform (CAS 75-46-7) is a halogenated hydrocarbon with three fluorine atoms and exceptional chemical stability. This colorless, odorless gas represents one of the simplest perfluorinated compounds, distinguished by its non-flammable nature and low toxicity profile compared to other halogenated refrigerants. As a member of the hydrofluorocarbon (HFC) family, fluoroform exhibits remarkable thermal stability and chemical inertness under normal conditions. With its molecular formula CHF3 and molecular weight of 70.014 g/mol, this compound demonstrates excellent heat transfer properties and negligible ozone depletion potential. Unlike substances such as nitrous oxide, fluoroform does not readily participate in atmospheric ozone destruction reactions, making it environmentally preferable for many industrial applications. The compound's safety profile is notably favorable, with no specific GHS pictograms required due to its low acute toxicity. However, as a compressed gas classified under ADR Class 2, proper handling protocols and appropriate storage conditions must be maintained to ensure safe industrial use. Fluoroform exhibits low flammability limits and does not support combustion under standard atmospheric conditions. Primary industrial applications include its use as a refrigerant in specialized cooling systems, particularly in low-temperature applications where conventional refrigerants prove inadequate. The semiconductor industry utilizes fluoroform as an etching gas for plasma processing and as a cleaning agent for chemical vapor deposition equipment. Additionally, it serves as a precursor in the synthesis of various fluorinated compounds and as a specialty solvent in specific chemical processes. OYSI maintains reliable supply chains for fluoroform to support diverse industrial requirements across European markets.

Safety & Classification

No Hazard Classification

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

Transport (ADR)

UN Number1984
ADR Class2
Packing Group
Tunnel CodeC/E
Proper Shipping NameTrifluormethan, unter Druck verflüssigt
Marine PollutantNo

Frequently Asked Questions

What is fluoroform?

Fluoroform is a colorless, odorless gas with the chemical formula CHF3 and CAS number 75-46-7. This fluorinated hydrocarbon has a molecular weight of 70.014 g/mol and belongs to the family of hydrofluorocarbons (HFCs). It is also known as trifluoromethane and is characterized by its three fluorine atoms bonded to a single carbon atom with one hydrogen atom.

What are the physicochemical properties of fluoroform?

Fluoroform is a colorless gas at room temperature with no characteristic odor. It has a boiling point of -82.1°C and a melting point of -155.2°C. The compound is relatively stable under normal conditions and has low solubility in water but is soluble in organic solvents. It is non-flammable and exhibits good chemical stability, making it suitable for various industrial applications.

What is fluoroform used for?

Fluoroform is primarily used as a refrigerant gas in commercial and industrial cooling systems, designated as R-23. It serves as a component in refrigerant blends and is utilized in low-temperature applications due to its excellent thermodynamic properties. Additionally, it finds applications in the electronics industry for cleaning and etching processes, and as an intermediate in the synthesis of other fluorinated compounds.

How to handle fluoroform safely?

Fluoroform requires careful handling using appropriate personal protective equipment including safety goggles, gloves, and respiratory protection when necessary. Work should be conducted in well-ventilated areas or under fume hoods to prevent accumulation of vapors. Avoid contact with hot surfaces and ignition sources. Personnel should be trained in proper gas handling techniques and emergency procedures before working with this compressed gas.

How to store fluoroform correctly?

Fluoroform should be stored in approved pressure vessels in cool, dry, well-ventilated areas away from heat sources and direct sunlight. Storage areas must be equipped with adequate ventilation systems and gas detection equipment. Cylinders should be secured upright and protected from physical damage. Keep away from incompatible materials and ensure proper labeling and inventory management according to local regulations.

What to do in case of contact with fluoroform?

Fluoroform exposure requires immediate action depending on the route of contact. In case of inhalation, move the person to fresh air immediately and seek medical attention if breathing difficulties occur. For skin contact, remove contaminated clothing and wash with soap and water. Eye contact requires immediate flushing with clean water for at least 15 minutes. Always consult a physician if symptoms persist or worsen.

How to dispose of fluoroform properly?

Fluoroform disposal must comply with local environmental regulations and waste management guidelines. The gas should not be released directly into the atmosphere due to its greenhouse gas potential. Proper disposal involves returning unused material to the supplier or using certified waste management companies that specialize in fluorinated gas recovery and destruction. Never attempt to dispose of pressurized cylinders in regular waste streams.

How to transport fluoroform?

Fluoroform is classified under ADR Class 2 (gases) for transportation purposes. It must be transported in approved pressure vessels with proper labeling and documentation. Vehicles should be equipped with adequate ventilation and emergency equipment. Drivers must hold appropriate dangerous goods training certificates, and transport should comply with routing restrictions and quantity limitations as specified in ADR regulations.

Is fluoroform subject to specific regulations?

Fluoroform is regulated under various European frameworks including REACH registration requirements and CLP classification standards. It is not classified as a Substance of Very High Concern (SVHC) under REACH. However, as a fluorinated greenhouse gas, it may be subject to F-gas regulations limiting its use and requiring proper handling and reporting. Companies must comply with registration and notification requirements for commercial use.

Where to buy fluoroform in Europe?

Fluoroform is available through OYSI, a leading European distributor of technical chemicals and specialty gases. OYSI provides reliable supply chains across Europe with proper documentation and regulatory compliance. As a specialized chemical distributor, OYSI ensures product quality, appropriate packaging, and technical support for industrial customers requiring fluoroform for refrigeration, electronics, or chemical synthesis applications throughout the European market.

Data Sources

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