Parachlorobenzotrifluoride
Parachlorobenzotrifluoride is a synthetic halogenated organic chemical compound with the molecular formula Template:Chem2. It is frequently abbreviated PCBTF. Parachlorobenzotrifluoride is a colorless liquid with a distinct aromatic odor. PCBTF has been commercially-produced since the 1960s, initially as an intermediate in the production of other petrochemicals. But since the 1990s, it has been primarily used as a solvent.[1]
History
Occidental Chemical Corporation was a leading producer and sold it as part of its Oxsol® product line, specifically under the brand name of Oxsol 100.[2] Occidental Chemical Corporation sold the OXSOL line to an Israeli company, Makhteshim Agan Industries, Ltd., in 2002.[3]
Uses
PCBTF is increasingly used as a xylene replacement in cleaners, thinners, and other aromatic hydrocarbon blends.[1]
PCBTF is used as a component (5-12%) of low volatile organic compound (VOC) compliant polyurethane finishes.[4]
The substance is used as an ink solvent in the printing industry. Parachlorobenzotrifluoride has a high capacity for dissolving many inks used by the printing industry. In most cases, up to 22 grams of ink can be dissolved in 20 grams of PCBTF.Script error: No such module "Unsubst". An added benefit is that parachlorobenzotrifluoride dissolves most inks faster than toluene.
Health and Environmental effects
Health effects:
- Points of entry: eyes, ingestion, inhalation, skin.
- Target organs: central nervous system, kidneys, liver.
- Irritancy: eyes, respiratory tract, skin[2]
In the troposphere, PCBTF has an estimated half-life of 67 days. It is transformed by reaction with photochemically-produced hydroxyl radicals to give mainly 2-chloro-5-trifluoromethylphenol.[1]
Regulation
PCBTF currently has VOC Exempt status from the U.S. Environmental Protection Agency.[5] However, California's Office of Environmental Health Hazard Assessment (OEHHA) has adopted inhalation risk factors for PCBTF as of June 2019, which could have implications for its ongoing VOC Exempt status.[6][7]
References
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- ↑ a b MSDS provided by Islechem
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- ↑ see MSDS for MINWAX product numbers 13025(5%) and 71029(12%) Script error: No such module "Unsubst".
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- ↑ p-Chloro-α,α,α-trifluorotoluene (p-Chlorobenzotrifluoride, PCBTF) - Cancer Inhalation Unit Risk Factor Scientific Review Panel Draft - January 2020 - California Office of Environmental Health Hazard Assessment
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