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Bromomethane, commonly known as methyl bromide, is an organobromine compound with formula C H 3 Br. This colorless, odorless, nonflammable gas is produced both industrially and biologically. This colorless, odorless, nonflammable gas is produced both industrially and biologically.
To calculate whether or not spraying methyl bromide had an adverse effect on children in the vicinity, the OCR used data from 1995 to 2001 in the CDPR's previously developed model. [21] and found that both short-term and long-term exposure levels exceeded the EPA's threshold of concern [5] (35 ppb and 1.3 ppb, respectively). [21]
This is the list of extremely hazardous substances defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. § 11002).The list can be found as an appendix to 40 CFR 355. [1]
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
A bromide ion is the negatively charged form (Br −) of the element bromine, a member of the halogens group on the periodic table.Most bromides are colorless. Bromides have many practical roles, being found in anticonvulsants, flame-retardant materials, and cell stains. [3]
Methyl bromide was discovered as an extinguishing agent in the 1920s and was used extensively in Europe. It is a low-pressure gas that works by inhibiting the chain reaction of the fire and is the most toxic of the vaporizing liquids, used until the 1960s.
Dibromomethane or methylene bromide, or methylene dibromide is a halomethane with the formula CH 2 Br 2. It is slightly soluble in water but very soluble in organic solvents . It is a colorless liquid.
safety comment Methyl bromide: gas (4.3 °C), TLV-TWA 5 ppm, MAK 5 ppm. restricted by the Montreal Protocol. ethylene oxide: gas (10.7 °C) TLV-TWA 1 ppm: food sulfuryl fluoride: gas (-55 °C) TLV-TWA 5 ppm, applied in tent for termites chloropicrin: 112 °C: TLV-TWA 0.1 ppm, MAK 0.1 ppm, lachrymator. naphthalene: sublimable solid: TLV-TWA 10 ...