| | BROMOTRIFLUOROMETHANE Basic information |
| | BROMOTRIFLUOROMETHANE Chemical Properties |
| Melting point | -168°C | | Boiling point | -58°C | | density | 1,58 g/cm3 | | vapor pressure | >760 at 20 °C (NIOSH, 1997) | | refractive index | 1.2380 | | solubility | Soluble in chloroform (Weast, 1986) and many other solvents, particularly chlorinated
hydrocarbons. | | form | A gas | | color | Colorless gas with an ether-like odor | | Water Solubility | 0.03 wt % at 20 °C (NIOSH, 1997) | | Henry's Law Constant | (atm?m3/mol):
0.500 at 25 °C (Hine and Mookerjee, 1975) | | Exposure limits | NIOSH REL: TWA 1,000 ppm (6,100 mg/m3), IDLH 40,000 ppm; OSHA PEL:
TWA 1,000 ppm. | | CAS DataBase Reference | 75-63-8(CAS DataBase Reference) | | EPA Substance Registry System | Halon 1301 (75-63-8) |
| Risk Statements | 20 | | Safety Statements | 23-36/37/39-38 | | RIDADR | 1009 | | DOT Classification | 2.2 (Nonflammable gas) | | HazardClass | 2.2 | | Hazardous Substances Data | 75-63-8(Hazardous Substances Data) | | Toxicity | LC50 (inhalation) for mice 381 gm/m3, rats 416 gm/m3 (quoted, RTECS, 1985). | | IDLA | 40,000 ppm |
| | BROMOTRIFLUOROMETHANE Usage And Synthesis |
| Chemical Properties | Trifluorobromomethane is a colorless gas with
a slight ethereal odor. Shipped as a liquefied compressed
gas. | | Uses | Used as fire extinguishing agent for oil, electrical equipment, organic solvent, natural gas and a variety of organics, especially for important military and civilian sites. | | Uses | Fire extinguishing agent; refrigerant. | | Synthesis Reference(s) | Journal of the American Chemical Society, 68, p. 968, 1946 DOI: 10.1021/ja01210a017 | | General Description | A colorless, odorless gas at room conditions Shipped as a liquid confined under its own vapor pressure. Noncombustible. Nontoxic but can asphyxiate by the displacement of air. Contact with the unconfined liquid can cause frostbite by evaporative cooling. Exposure of the container to prolonged heat or fire can cause BROMOTRIFLUOROMETHANE to rupture violently and rocket. | | 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. |
| | BROMOTRIFLUOROMETHANE Preparation Products And Raw materials |
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