Chemical Safety Program: PACs for Chemicals of Concern

PAC Database - Detailed Chemical Data

Chemical Identity

Chemical	CAS#	UN#	Health Code Numbers
Chlorine trifluoride	7790-91-2	1749	18.00 14.01 4.01 11.01 14.02 4.08 4.05 7.01 8.00 7.00
Formula	Synonyms
ClF3	CHLORINE TRIFLUORIDE, CHLORINE FLUORIDE, CHLORINE FLUORIDE (CL2F6), CHLORINE TRIFLUORIDE (CLF3), CHLOROTRIFLUORIDE, CTF, TRIFLUOROCHLORINE, TRIFLUORURE DE CHLORE (DOT FRENCH), TRIFLUORURO DE CLORO (DOT SPANISH)

Physical Properties

Mol Wt	State	MP (°C)	BP (°C)	VP (Hg)	VP (°C)	SG	LEL (ppm)
92.45	G	-76.34	11.75	750	11.4	3.779

PAC Values

PAC Values (Original Units: ppm)
PAC-1	PAC-2	PAC-3
0.12	2.0	21

Converted PAC Values (mg/m3)
PAC-1	PAC-2	PAC-3
0.45	7.6	79

Technical Basis

A review of available sources identified exposure limits for this chemical including AEGLs. The AEGLs were selected as the TEELs due to their priority among the emergency exposure limits (Section 1).
• TEEL-1 = AEGL-1
• TEEL-2 = AEGL-2
• TEEL-3 = AEGL-3
This review generated TEEL ppm values that are consistent with Rev. 29A. Minor differences in the Rev. 29A reported TEEL-1 and TEEL-3 values in units of mg/m3 may be due to conversion and rounding of these values, instead of use of the source values. Values in units of mg/m3 are reported as published in the EPA technical support document Table 2-1, per handbook guidance (Section 3.4.7.2).

References

Chemical information retrieved from Table 2-2 of EPA Technical Support document. AEGLs: https://www.epa.gov/aegl/chlorine-trifluoride-results-aegl-program

Additional exposure limits: https://www.osha.gov/chemicaldata/664

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PAC values marked with a subscript "A" correspond to 60-minute AEGL values.
PAC values marked with a subscript "E" correspond to ERPG values.
PAC values marked by * are >= 10% lower explosive limit (LEL) but < 50% LEL.
PAC values marked by ** are > 50% LEL but < 100% LEL.
PAC values marked by *** are >= LEL.