Parachlorobenzotrifluoride is an organic chemical compound with the molecular formula C7H4ClF3. It is frequently abbreviated PCBTF. Parachlorobenzotrifluoride is a colorless liquid with a distinct aromatic odor. It is used as an ink solvent in the printing industry. PCBTF is used as a component (5-12%) of low volatile organic compound (VOC) compliant polyurethane finishes.[1] It is also sold under the brand name Oxsol 100.[2] The substance is increasingly used as a xylene replacement in cleaners, thinners, and other aromatic hydrocarbon blends. It currently has VOC Exempt status from the EPA Environmental Protection Agency;[3] 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.[4][5]
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| Names | |
|---|---|
| Preferred IUPAC name
1-Chloro-4-(trifluoromethyl)benzene | |
| Identifiers | |
3D model (JSmol)
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| Abbreviations | PCBTF |
| 510203 | |
| ChemSpider | |
| ECHA InfoCard | 100.002.438 |
| EC Number |
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| MeSH | C037723 |
PubChem CID
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| UNII | |
| UN number | 2234 |
CompTox Dashboard (EPA)
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| Properties | |
| C7H4ClF3 | |
| Molar mass | 180.55 g·mol−1 |
| Appearance | Colorless liquid |
| Melting point | −36 °C (−33 °F; 237 K) |
| Boiling point | 139 °C (282 °F; 412 K) |
| 0 | |
| Vapor pressure | 7.9 |
Henry's law
constant (kH) |
0.0347 |
| Hazards | |
| GHS labelling: | |
  
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| Warning | |
| H226, H315, H319, H335, H411 | |
| P210, P233, P240, P241, P242, P243, P261, P264, P271, P273, P280, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P391, P403+P233, P403+P235, P405, P501 | |
| NFPA 704 (fire diamond) | |
| Flash point | 43 °C (109 °F; 316 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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UsesEdit
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.[citation needed] An added benefit is that parachlorobenzotrifluoride dissolves most inks faster than toluene.
Health effectsEdit
- Points of entry: eyes, ingestion, inhalation, skin.
- Target organs: central nervous system, kidneys, liver.
- Irritancy: eyes, respiratory tract, skin[2]
ReferencesEdit
- ^ see MSDS for MINWAX product numbers 13025(5%) and 71029(12%)[full citation needed]
- ^ a b MSDS provided by Islechem
- ^ "EPA Exempt Volatile Organic Compound: Parachlorobenzotrifluoride" (PDF). American Coatings Association. 2018-01-30. Retrieved 2019-03-20.
{{cite web}}: CS1 maint: url-status (link) - ^ "Chemical Listed Effective June 28, 2019 as Known to the State Of California To Cause Cancer: P-Chloro-a,a,a-Trifluorotoluene (Para-Chlorobenzotrifluoride, PCBTF)". oehha.ca.gov. Retrieved 2021-08-14.
{{cite web}}: CS1 maint: url-status (link) - ^ 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