75-63-8 Usage
Description
BROMOTRIFLUOROMETHANE, also known as Halon 1301, is a halogenated hydrocarbon compound consisting of one carbon atom and three fluorine atoms bonded to one bromine atom. It is a colorless, odorless, and non-toxic gas at room temperature, with a high chemical stability and low toxicity. Due to its unique chemical properties, BROMOTRIFLUOROMETHANE is widely used in various applications, particularly as a fire extinguishing agent and refrigerant.
Uses
Used in Fire Protection Industry:
BROMOTRIFLUOROMETHANE is used as a fire extinguishing agent for oil, electrical equipment, organic solvents, natural gas, and a variety of organics. It is particularly effective for important military and civilian sites, as it quickly extinguishes fires without causing damage to the equipment or leaving any residue.
Used in Refrigeration Industry:
BROMOTRIFLUOROMETHANE is used as a refrigerant in various cooling systems, such as air conditioning units and refrigeration equipment. Its high thermal stability, low toxicity, and non-flammable properties make it an ideal choice for maintaining a stable and safe cooling environment.
Synthesis Reference(s)
Journal of the American Chemical Society, 68, p. 968, 1946 DOI: 10.1021/ja01210a017
Air & Water Reactions
Slightly soluble in water.
Reactivity Profile
BROMOTRIFLUOROMETHANE may react with aluminum to produce substantial heat. Other halogenated hydrocarbons, such as fluorotrichloromethane, dichlorodifluoromethane, chlorodifluoromethane, tetrafluoromethane produce sufficient heat in this way to melt aluminum pieces. The vigor of the reaction appears to depend on the degree of fluorination and the vapor pressure [Chem. Eng. News 39(27):44 1961].
Health Hazard
Vapors may cause dizziness or asphyxiation without warning. Vapors from liquefied gas are initially heavier than air and spread along ground. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating, corrosive and/or toxic gases.
Fire Hazard
Some may burn but none ignite readily. Containers may explode when heated. Ruptured cylinders may rocket.
Safety Profile
Wildly toxic by
inhalation. Incompatible with aluminum.
When heated to decomposition it emits
toxic fumes of Fand Br-. See also
BROMIDES and FLUORIDES.
Potential Exposure
This material is used as a fire
extinguishing agent, a chemical intermediate, and as a
refrigerant.
Shipping
UN1009 Bromotrifluoromethane or Refrigerant
gas, R-13B, Hazard Class: 2.2; Labels: 2.2-Nonflammable
gas. Cylinders must be transported in a secure upright position,
in a well-ventilated truck. Protect cylinder and labels
from physical damage. The owner of the compressed gas
cylinder is the only entity allowed by federal law (49CFR)
to transport and refill them. It is a violation of transportation
regulations to refill compressed gas cylinders without
the express written permission of the owner.
Purification Methods
Purify the gas by passing it through a tube containing P2O5 on glass wool into a vacuum system where it is frozen out in a quartz tube and degassed by a cycles of freezing, evacuating and thawing. [Beilstein 1 III 83, 1 IV 73.]
Incompatibilities
Keep away from chemically active
metals, such as calcium, powdered aluminum; zinc, magnesium.
Attacks some plastics, rubber, and coatings.
Waste Disposal
Return refillable compressed
gas cylinders to supplier. Incineration, preferably after mixing
with another combustible fuel. Care must be exercised
to assure complete combustion to prevent the formation of
phosgene. An acid scrubber is necessary to remove the halo
acids produced.
Check Digit Verification of cas no
The CAS Registry Mumber 75-63-8 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 5 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 75-63:
(4*7)+(3*5)+(2*6)+(1*3)=58
58 % 10 = 8
So 75-63-8 is a valid CAS Registry Number.
InChI:InChI=1/CBrF3/c2-1(3,4)5
75-63-8Relevant articles and documents
Rice,Willard
, p. 6156,6157 (1953)
Prochaska,F.T.,Andrews,L.
, p. 2102 - 2108 (1978)
Griffiths,Burg
, p. 5759 (1960)
Gas-phase photodissociation of CF3C(O)Cl between 193 and 280 nm
McGillen, Max R.,Burkholder, James B.
, p. 189 - 194 (2015/10/12)
Product yields were measured in the 296 K photolysis of CF3C(O)Cl at 193, 248, 254, and 280 nm. Br2 was used as a radical scavenger to convert the primary CF3 and CF3CO radical photofragments into stable bromides, CF3Br and CF3C(O)Br, which were quantified along with CO and CF2O using infrared absorption. The stabilized CF3CO radical yield increased with increasing photolysis wavelength from 3Cl quantum yield was determined to be 0.001 at all wavelengths.
The nascent OH detection in photodissociation of 2-(bromomethyl)hexafluoro- 2-propanol at 193 nm: Laser-induced fluorescence study
Indulkar, Yogesh N.,Upadhyaya, Hari P.,Kumar, Awadhesh,Waghmode, Suresh B.,Naik, Prakash D.
experimental part, p. 210 - 219 (2012/07/14)
Photodissociation of 2-(bromomethyl)hexafluoro-2-propanol (BMHFP) and 3-bromo-1-propanol (BP), involving σC-BrnBr transition at 193 nm, has been investigated by measuring laser-induced fluorescence spectra of the expected OH product. The OH channel is a minor dissociation pathway with a quantum yield of 0.17 ± 0.05 in BMHFP, whereas it was not observed in BP. Partitioning of the available energy into translation, rotation, and vibration of the photoproducts has been measured by state selective detection of the nascent OH product in BMHFP. OH is produced mostly in the ground vibrational level (v″ = 0), with a rotational distribution being characterized by a temperature of 465 ± 25 K. But, a significant fraction of the available energy of 30.2 kcal mol-1 is partitioned into translation of OH (14.6 kcal mol-1). The OH(v″ = 0, J″) populations in the spin-orbit states as well as in the Λ-doublet states are statistical. A plausible mechanism of OH formation on excitation of BMHFP at 193 nm is suggested, with the primary reaction channel being elimination of Br atom by direct C-Br bond dissociation from a repulsive surface. The Br radical is detected using (2 + 1) resonance-enhanced multiphoton ionization (REMPI) at ~234 nm. It is produced in both the ground (2P3/2) and the excited (2P1/2) spin-orbit states with the relative quantum yield of the latter to be 0.36. The co-fragment of Br undergoes secondary C-O bond dissociation to produce OH and F3C-C(CH 2)-CF3, with the reaction having a barrier located in the exit channel. In this two-step three-body dissociation process, a major fraction of the available energy is released into translation (〈fT〉 ~ 0.75), resulting from an impulsive C-Br bond dissociation in the primary step and presence of an exit barrier in the secondary process. Experimental results combined with theoretical calculations provide a clear picture of the dynamics of OH formation from BMHFP at 193 nm. In addition, the energetics of another channel, competing with OH, have been calculated from the primary product F3C-C(CH2)(OH)-CF3. In contrast to BMHFP, the OH product could not be observed from the photolysis of 3-bromo-1-propanol (another saturated halogenated propanol) at 193 nm under the detection limit of the present experimental condition, although it has a higher absorption cross-section at 193 nm.
Catalytical production processes for making hydrohalopropanes and hydrofluorobutanes
-
Page/Page column 4, (2008/06/13)
A process is disclosed for making hydrohalopropanes or hydrofluorobutanes. The process involves reacting a hydrofluoromethane with a fluoroolefin in the presence of an aluminum catalyst to produce a hydrohalopropane or a hydrofluorobutane. The hydrofluoromethane is CH2F2 or CH3F. The fluoroolefin is CF2═CF2, ClFC═CF2, or CF3CF═CF2.