Parachlorobenzotrifluoride

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]

Parachlorobenzotrifluoride
Names
Preferred IUPAC name
1-Chloro-4-(trifluoromethyl)benzene
Identifiers
3D model (JSmol)
Abbreviations PCBTF
510203
ChemSpider
ECHA InfoCard 100.002.438
EC Number
  • 202-681-1202-681-1
MeSH C037723
UNII
UN number 2234
  • InChI=1S/C7H4ClF3/c8-6-3-1-5(2-4-6)7(9,10)11/h1-4H N
    Key: QULYNCCPRWKEMF-UHFFFAOYSA-N N
  • InChI=1/C7H4ClF3/c8-6-3-1-5(2-4-6)7(9,10)11/h1-4H
    Key: QULYNCCPRWKEMF-UHFFFAOYAI
  • C1=CC(=CC=C1C(F)(F)F)Cl
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
0.0347
Hazards
GHS labelling:
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)
1
2
1
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).
N verify (what is YN ?)
Infobox references

Uses

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. An added benefit is that parachlorobenzotrifluoride dissolves most inks faster than toluene.

Health effects
  • Points of entry: eyes, ingestion, inhalation, skin
  • Target organs: central nervous system, kidneys, liver
  • Irritancy: eyes, respiratory tract, skin[2]

References
  1. see MSDS for MINWAX product numbers 13025(5%) and 71029(12%)
  2. MSDS provided by Islechem
  3. "EPA Exempt Volatile Organic Compound: Parachlorobenzotrifluoride" (PDF). American Coatings Association. 2018-01-30. Retrieved 2019-03-20.{{cite web}}: CS1 maint: url-status (link)
  4. "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)
  5. 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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