CHLORINE TRIFLUORIDE†

Chemical Identification
Chemical Identification
CAS # 7790-91-2
Formula

ClF₃

Synonyms

chlorine fluoride; chlorotrifluoride

Physical Properties
Physical Properties
Physical description Colorless gas or a greenish-yellow liquid (below 53°F) with a somewhat sweet, suffocating odor.
Boiling point 53°F Molecular weight 92.5
Freezing point/melting point -105°F Vapor pressure 1.4 atm
Flash point Vapor density 3.21
Specific gravity 1.85 at 51.8°F Ionization potential 13.00 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 4 NFPA fire rating 0
NFPA reactivity rating 3 NFPA special instruction W: Reacts violently or explosively with water. OX: Possesses oxidizing properties.
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0615
Sampling group
Sampler/Sampling media Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0]
Sampling time*

60 min

Sampling volume (TWA)*

90 L

Sampling flow rate (TWA)*

1.5 L/min

Sampling volume (STEL/Peak/C)*

22.5 L

Sampling flow rate (STEL/Peak/C)*

1.5 L/min

Analytical method instruments ICP
Method reference OSHA ID-110 (fully validated)
Notes

Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period. Hydrogen fluoride is collected on a Na₂CO₃ impregnated backup pad.

Special requirements

* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media
Bulk Method
Bulk Method
On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)
Exposure Limits
Exposure Limits
OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
NIOSH REL
Up to 10-hour TWA
(ST) STEL
(C) Ceiling
ACGIH TLV©
8-hour TWA
(ST) STEL
(C) Ceiling
CAL/OSHA PEL
8-hour TWA
(ST) STEL
(C) Ceiling
Peak
PEL-TWA REL-TWA TLV-TWA PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C

0.1 ppm (0.4 mg/m³)

REL-C

0.1 ppm (0.4 mg/m³)

TLV-C

0.1 ppm [1979]

PEL-C

0.1 ppm (0.4 mg/m³)

Skin notation

N

Skin notation

N

Skin notation

N

Skin notation

N

Notes:

See 29 CFR 1910.1000 Table Z-1.

Notes: Notes: Notes:
Health factors:  See NIH-NLM PubChem. IDLH

20 ppm

Carcinogenic classifications: Not listed Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

0.1 ppm/1 ppm/10 ppm

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Chlorine trifluoride

NIOSH: Pocket Guide to Chemical Hazards - Chlorine trifluoride

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Chlorine trifluoride. See annual publication for most recent information.

Last Updated Date : 12/21/2020