PRODUCTS

BROMOCHLORODIFLUOROMETHANE

Bromochlorodifluoromethane is primarily used as a refrigerant and has been utilized in various industrial applications.
Bromochlorodifluoromethane is largely used as a streaming agent in portable, hand held fire extinguishers.
Bromochlorodifluoromethane is also used in large wheeled extinguishers called "Flight Line" units to combat airplane fires on the runway.

CAS Number: 353-59-3
EC Number: 206-537-9
Molecular Formula: CBrClF₂ / CF₂ClBr
Molecular Weight: 165.36 g/mol

SYNONYMS:
Bromochlorodifluoromethane, Bromo-chloro-difluoromethane, Chlorodifluoromonobromomethane, Halon 1211, Halon 1211 BCF, Halon 1211 BCF, BCF, Freon 12B1, Daiflon 12B1, Bromo(chloro)difluoromethane, Bromochlorodifluoromethane, Halon 1211, Halon 1211 BCF, BCF, Freon 12B1, BROMOCHLORODIFLUOROMETHANE, 353-59-3, Halon 1211, Daiflon 12B1, Freon 12B1, Fluorocarbon 1211, Flugex 12B1, Chlorodifluoromonobromomethane, Methane, bromochlorodifluoro-, Halon-1211, Difluorochlorobromomethane, Chlorodifluobromometano, R 12B1, Dwufluorochlorobromometan, Chlorodifluorobromomethane, 91I5X8AJXS, DTXSID0027147, CHEBI:84698, RefChem:121556, DTXCID907147, 206-537-9, bromo-chloro-difluoromethane, bromo-chloro-difluoro-methane, MFCD00042122, BCF, CBrClF2, Methane,bromochlorodifluoro-, CCRIS 5663, Chlorodifluobromometano [Spanish], HSDB 6784, Dwufluorochlorobromometan [Polish], difluorobromochloromethane, Chlorobromodifluoromethane, EINECS 206-537-9, UN1974, UNII-91I5X8AJXS, bromo(chloro)difluoromethane, BRN 1732514, CF2BrCl, Norflurane EP Impurity O, refrigerant gas R 12B1, SCHEMBL288, 4-01-00-00075 (Beilstein Handbook Reference), Bromo(chloro)di(fluoro)methane, monobromomonochlorodifluoromethane, SCHEMBL14722550, AKOS006237189, R 12 B1, UN 1974, BROMOCHLORODIFLUOROMETHANE [HSDB], BROMOCHLORODIFLUOROMETHANE [MART.], DB-318836, NS00042119, Q419723, Bromochlorodifluoromethane 100 microg/mL in Methanol, Chlorodifluorobromomethane or Refrigerant gas R 12B1, Chlorodifluorobromomethane or Refrigerant gas R 12B1 [UN1974] [Nonflammable gas], Methane, bromochlorodifluoro-, Difluorochlorobromomethane, Fluorocarbon 1211, Freon 12B1, Halon 1211, R 12 B1, CF2BrCl, Chlorodifluoromonobromomethane, BCF, Chlorodifluorobromomethane, Flugex 12B1, UN 1974, Chlorobromodifluoromethane, Daiflon 12B1, Bromochlorodifluoromethane, Halon 1211, Halon 1211 BCF, BCF, Freon 12B, Methane,bromochlorodifluoro-, Bromochlorodifluoromethane, Freon 12B1, Halon 1211, R 12B1, Difluorochlorobromomethane, Fluorocarbon 1211, Flugex 12B1, BCF, Chlorobromodifluoromethane, Daiflon 12B1, F 12B1, H 1211, BCF (halocarbon), 11104-73-7

Bromochlorodifluoromethane is a fully halogenated methane derivative with the molecular formula CBrClF₂.
Bromochlorodifluoromethane is most commonly known as Halon 1211, and it belongs to the halon family of bromine-, chlorine-, and fluorine-containing compounds.
A particularly important characteristic of bromochlorodifluoromethane is that it is a nonflammable, highly halogenated compound that can be stored as a liquefied gas under pressure.

Under ordinary atmospheric conditions, Bromochlorodifluoromethane exists as a colorless gas, while pressure allows it to be stored as a liquid.
Bromochlorodifluoromethane's relatively high molecular weight gives its vapor a density substantially greater than that of air.
Its physical properties also made Bromochlorodifluoromethane suitable for storage in pressurized cylinders.

At room temperature, Bromochlorodifluoromethane can exist as a pressurized liquid, allowing a relatively large quantity of extinguishing agent to be stored in a comparatively compact cylinder.
When released, Bromochlorodifluoromethane rapidly vaporizes.

Bromochlorodifluoromethane has also been associated historically with refrigerant applications, although its importance in this area is now primarily historical because of environmental restrictions.
Bromochlorodifluoromethane is having been used as a refrigerant gas as well as a fire-extinguishing agent.

Bromochlorodifluoromethane has excellent technical fire-suppression characteristics.
Bromochlorodifluoromethane is a colorless, nonflammable gas.
Bromochlorodifluoromethane is a one-carbon compound that is methane in which the hydrogens have been replaced by two fluorines, a bromine, and a chlorine.

Bromochlorodifluoromethane is an organochlorine compound, an organobromine compound, an organofluorine compound and a one-carbon compound.
Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula CF2ClBr.
Bromochlorodifluoromethane is stored as a liquid under pressure and vaporizes when discharged to suppress fires.

Bromochlorodifluoromethane, with the CAS number 353-59-3, is a halogenated hydrocarbon that belongs to the class of compounds known as haloalkanes.
Bromochlorodifluoromethane is a colorless gas at room temperature and is characterized by its relatively low boiling point.
Bromochlorodifluoromethane has a molecular formula of CBrClF2, indicating the presence of bromine, chlorine, and fluorine atoms, which contribute to its chemical reactivity and physical properties.

Bromochlorodifluoromethane (Halon 1211) is a streaming agent that is effective on all common types of fires (A, B, C).
Production of Bromochlorodifluoromethane ceased in 1994 as part of the Montreal Protocol, however, recycling of Halon 1211 allows it to remain in use.
Bromochlorodifluoromethane is a one-carbon compound that is methane in which the hydrogens have been replaced by two fluorines, a bromine, and a chlorine.

Bromochlorodifluoromethane is a colorless gas or liquid under pressure.
Bromochlorodifluoromethane is a colorless, nonflammable gas.
Bromochlorodifluoromethane, also known as Halon 1211, is a colorless gas used primarily in the electronics and semiconductor industry.

Bromochlorodifluoromethane serves as an effective etch gas, playing a critical role in the precision manufacturing of semiconductors and other electronic components.
Bromochlorodifluoromethane is valued for its ability to selectively remove materials during the fabrication process, contributing to the production of high-quality, reliable electronic devices.

Bromochlorodifluoromethane, also known by the trade name Halon 1211, or BCF, or Halon 1211 BCF, or Freon 12B1, is a haloalkane with the chemical formula CF2ClBr.
Bromochlorodifluoromethane is an excellent fire extinguishing agent, as it is a streaming agent with low toxicity, a low pressure, liquefied gas, and effective on all common types of fires, A, B, and C.

USES and APPLICATIONS of BROMOCHLORODIFLUOROMETHANE:
The principal historical application of Bromochlorodifluoromethane was fire suppression.
Bromochlorodifluoromethane was widely used as Halon 1211, particularly in portable fire extinguishers.
Bromochlorodifluoromethane was valued because it could suppress fires rapidly without leaving the solid residue associated with dry chemical extinguishing powders.

Bromochlorodifluoromethane was particularly useful for portable fire extinguishers, where a stream of liquefied agent could be directed toward a localized fire.
Bromochlorodifluoromethane was used for protection of electrical and electronic equipment, aircraft-related applications, industrial equipment and other situations where water could cause secondary damage.

Another important historical advantage was Bromochlorodifluoromethane's clean-agent behavior.
After discharge and vaporization, Bromochlorodifluoromethane generally does not leave a conventional powder or liquid residue on equipment.
This made Bromochlorodifluoromethane attractive for sensitive machinery, electrical installations and other contamination-sensitive applications.

Bromochlorodifluoromethane is used as a refrigerant gas.
Widely used in 'vapourising liquid'-type fire extinguishers, Bromochlorodifluoromethane's use is now generally banned under the Montreal Protocol (ozone-depleting substances), although it is still used in certain applications (e.g. aviation).

Bromochlorodifluoromethane is used as a refrigerant gas.
Historically, Bromochlorodifluoromethane was an important clean fire-extinguishing agent, particularly in portable fire extinguishers and applications where conventional water or powder extinguishing agents could damage sensitive equipment.

Bromochlorodifluoromethane is used alternative agents where regulations permit and require them.
Bromochlorodifluoromethane is mainly used in portable and wheeled extinguishers, and small spot protection units for marine engine applications, and was never widely used in fixed systems like halon 1301 was.

Bromochlorodifluoromethane is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers.
Bromochlorodifluoromethane is used as a fire extinguishing agent: Brominated haloalkanes were first used during World War II in fire extinguishers for aircraft and tanks.
Bromochlorodifluoromethane was introduced as an effective gaseous fire suppression agent in the mid-1960s for use around highly valuable materials in places such as museums, mainframe rooms, and telecommunication switching centers.

Bromochlorodifluoromethanes were also widely used in the maritime industries in the engine rooms of ships and also in the transport industry in vehicles.
Its efficiency as a fire extinguishing agent has also led Bromochlorodifluoromethane to be the predominant choice of fire extinguishing agent on commercial aircraft and is typically found in cylindrical hand-held canisters.
Its advantages as a fire extinguishing agent are that Bromochlorodifluoromethane has lower toxicity than chemicals such as carbon tetrachloride and that since it is a covalently bonded compound, it does not form conductive ions, therefore being usable on electrical equipment.

Bromochlorodifluoromethane is an excellent fire extinguishing agent, as it is a streaming agent with low toxicity, a low pressure, liquefied gas, and effective on all common types of fires, A, B, and C.
Bromochlorodifluoromethane is mainly used in portable and wheeled extinguishers, and small spot protection units for aviation and marine engine applications, and was never widely used in fixed systems like Halon 1301 was.

CHEMICAL CHARACTERISTICS of BROMOCHLORODIFLUOROMETHANE:
Bromochlorodifluoromethane is a halogenated methane derivative.
Bromochlorodifluoromethane's molecule contains carbon, bromine, chlorine and fluorine but no hydrogen.
The absence of hydrogen and the strong carbon–halogen bonds contribute to its relatively high chemical stability.

Bromochlorodifluoromethane is classified structurally as an organobromine compound, organochlorine compound and organofluorine compound.
Bromochlorodifluoromethane is a one-carbon compound and an organohalogen compound.
The combination of bromine and chlorine is particularly significant environmentally.

Bromine-containing halons are extremely effective at interfering with Bromochlorodifluoromethane chain reactions involved in combustion, but the same bromine chemistry contributes to their high ozone-depletion potential.
Bromochlorodifluoromethane is therefore a good example of a chemical whose useful technical properties are closely connected with its environmental disadvantages.

BENEFITS AND ADVANTAGES of BROMOCHLORODIFLUOROMETHANE:
The main technical benefits of Bromochlorodifluoromethane historically included its high fire-extinguishing efficiency, nonflammability, rapid vaporization, relatively high vapor density, clean discharge and compatibility with sensitive electrical equipment.
One of Bromochlorodifluoromethane's most important advantages was its ability to suppress combustion without relying on water.

This was especially useful for electrical equipment, aircraft systems and machinery where water could produce electrical hazards, corrosion or equipment damage.
Bromochlorodifluoromethane's low residue characteristic was another major advantage.
Unlike dry chemical powders, Bromochlorodifluoromethane does not normally leave a substantial solid deposit on the protected equipment after discharge.
Bromochlorodifluoromethane's storage stability was also important.

Halon agents could be stored for long periods in properly maintained cylinders, making them suitable for emergency fire-protection systems.
The combination of high extinguishing effectiveness and relatively compact storage requirements made Bromochlorodifluoromethane a technically attractive extinguishing agent for many decades.

FIRE-SUPPRESSION CHARACTERISTICS of BROMOCHLORODIFLUOROMETHANE:
Bromochlorodifluoromethane suppresses combustion primarily through chemical interruption of the flame's combustion chain reactions, together with physical effects associated with vaporization and heat absorption.
This is different from simply extinguishing a fire by smothering Bromochlorodifluoromethane with an inert gas.

The bromine- and halogen-containing chemistry of Bromochlorodifluoromethane is particularly effective at interfering with radical reactions that maintain combustion.
Bromochlorodifluoromethane's latent heat of vaporization, relatively high vapor density and rapid conversion from liquid to vapor after discharge also contribute to its fire-suppression performance.
Bromochlorodifluoromethane's boiling point near −4 °C allows it to vaporize readily under ordinary environmental conditions once discharged.

MOLECULAR STRUCTURE of BROMOCHLORODIFLUOROMETHANE:
The carbon atom is tetrahedrally bonded to Br, Cl and two F atoms.
Because the two fluorine substituents are identical, the molecule itself does not possess the same type of chirality as bromochlorofluoromethane, which is an important distinction between these similarly named substances.
Bromochlorodifluoromethane as CBrClF₂ and distinguishes it from bromochlorofluoromethane, which is CHBrClF.

CHARACTERISTICS of BROMOCHLORODIFLUOROMETHANE:
Bromochlorodifluoromethane is a colorless, nonflammable, highly halogenated, pressurized-gas chemical with a molecular weight of 165.36 g/mol.
Bromochlorodifluoromethane'low boiling point, relatively high liquid density, significant vapor pressure and rapid vaporization make it well suited to applications where a liquefied gas must rapidly transition into a gas.
Bromochlorodifluoromethane's most important historical characteristic is its exceptional fire-suppression capability, particularly for portable fire extinguishers and sensitive electrical equipment.
Bromochlorodifluoromethane produces little conventional residue and is electrically suitable for applications where water or powder could be problematic.

SYNTHESIS of BROMOCHLORODIFLUOROMETHANE:
Bromochlorodifluoromethane is commercially synthesized in a two-step process from chloroform.
Chloroform is fluorinated with hydrogen fluoride.
The resulting chlorodifluoromethane is then reacted with elemental bromine at 400-600 °C, with reaction time limited to about 3 seconds.
The overall yield is over 90%.

PHYSICAL and CHEMICAL PROPERTIES of BROMOCHLORODIFLUOROMETHANE:
Chemical Name: Bromochlorodifluoromethane
IUPAC Name: Bromo-chloro-difluoromethane
Common Name: Halon 1211
Halon Designation: Halon 1211 / 1211
CAS Number: 353-59-3
EC Number: 206-537-9
Molecular Formula: CBrClF₂
Alternative Formula Notation: CF₂ClBr
Molecular Weight: 165.36 g/mol
PubChem CID: 9625
InChI: InChI=1S/CBrClF2/c2-1(3,4)5
InChIKey: MEXUFEQDCXZEON-UHFFFAOYSA-N

SMILES: C(F)(F)(Cl)Br
Chemical Class: Halocarbon / haloalkane / halon
Physical State at Ordinary Conditions: Gas
Appearance: Colorless gas
Flammability: Nonflammable
Ozone-Depleting Substance: Yes
Molecular formula: CBrClF₂
Molecular weight: 165.36 g/mol
Molar mass: approximately 165.36 g/mol
Physical state: Gas at normal atmospheric conditions
Appearance: Colorless gas

Odor: Reported as having a faint/sweet odor in fire-protection references, although odor should not be relied upon as a warning property.
Boiling point: approximately −4 °C
Freezing/melting point: approximately −160 °C; some sources report approximately −159.5 °C.
Liquid density at 20 °C: approximately 1.83 g/cm³
Vapor pressure at 20 °C: approximately 2.5 atm
Latent heat of vaporization: approximately 134 J/g
These properties are particularly important for its historical use as a fire-extinguishing agent because the material can be stored as a pressurized liquid and rapidly vaporizes when discharged.
Critical temperature: approximately 153.8 °C (426.9 K)
Critical pressure: approximately 595 psia, according to fire-protection engineering data. More recent thermophysical-property compilations report a critical temperature of approximately 425.738 K (152.6 °C) and a critical pressure of approximately 4160.93 kPa.

Vapor density: The gas is considerably heavier than air.
A fire-protection reference describes its density as approximately five times that of air under normal conditions.
This property is relevant to ventilation and accumulation in low-lying or poorly ventilated locations.
Water solubility: Bromochlorodifluoromethane has relatively low water solubility and is not considered a water-soluble organic compound.
Flammability: Nonflammable under ordinary conditions.
Oxidizing properties: It is not classified as an oxidizing gas.
Chemical stability: The compound is relatively stable under ordinary storage conditions, which was one of the characteristics that made halons useful as fire-suppression agents.
Electrical characteristics: Halon 1211 is a clean extinguishing agent and leaves essentially no conventional powder or liquid residue after discharge, making it particularly attractive for electrical and electronic equipment.

Phase behavior: At atmospheric pressure it is gaseous above its boiling point, while pressure allows it to remain in liquid form.
Fire-extinguisher cylinders therefore contain liquefied Halon 1211 under pressure.
Chemical Formula: CBrClF2
Molar Mass: 165.36 g/mol
Appearance: Colorless gas
Density: 7,1362 kg·m−3 (15 °C, 1 bar)
Melting Point: −159.5 °C (−255.1 °F; 113.6 K)
Boiling Point: −3.7 °C (25.3 °F; 269.4 K)
Molecular Weight: 165.36 g/mol
XLogP3-AA: 2.4
Hydrogen Bond Donor Count: 0

Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 0
Exact Mass: 163.88400 Da
Monoisotopic Mass: 163.88400 Da
Topological Polar Surface Area: 0 Å²
Heavy Atom Count: 5
Formal Charge: 0
Complexity: 36.6
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0

Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 0
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
Density: 1.85
Boiling Point: -3,7ºC
Melting Point: -160.5ºC
Molecular Formula: CBrClF2
Molecular Weight: 165.36500
Exact Mass: 163.88400

LogP: 2.17040
Index of Refraction: 1.4
InChIKey: MEXUFEQDCXZEON-UHFFFAOYSA-N
SMILES: FC(F)(Cl)Br
Molecular Weight: 165.36
Exact Mass: 165.36
EC Number: 206-537-9
UNII: 91I5X8AJXS
ICSC Number: 0635
UN Number: 1974
DSSTox ID: DTXSID0027147
Color/Form: Colorless gas
HScode: 2903760010

FIRST AID MEASURES of BROMOCHLORODIFLUOROMETHANE:
-Description of first-aid measures
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation:
Fresh air.
*In case of skin contact:
Take off immediately all contaminated clothing.
Rinse skin with
water/ shower.
*In case of eye contact:
After eye contact:
Rinse out with plenty of water.
Call in ophthalmologist.
Remove contact lenses.
*If swallowed:
After swallowing:
Immediately make victim drink water (two glasses at most).
Consult a physician.
-Indication of any immediate medical attention and special treatment needed.
No data available

ACCIDENTAL RELEASE MEASURES of BROMOCHLORODIFLUOROMETHANE:
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains.
Collect, bind, and pump off spills.
Observe possible material restrictions.
Take up dry.
Dispose of properly.
Clean up affected area.

FIRE FIGHTING MEASURES of BROMOCHLORODIFLUOROMETHANE:
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2)
Foam
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of BROMOCHLORODIFLUOROMETHANE:
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection.
Safety glasses
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of BROMOCHLORODIFLUOROMETHANE:
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed.
Dry.

STABILITY and REACTIVITY of BROMOCHLORODIFLUOROMETHANE:
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature).
-Possibility of hazardous reactions:
No data available

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