BORON TRIFLUORIDE†

Chemical Identification
Chemical Identification
CAS # 7637-07-2
Formula

BF₃

Synonyms

boron fluoride; trifluoroborane

Physical Properties
Physical Properties
Physical description Colorless gas with a pungent, suffocating odor.
Boiling point -148°F Molecular weight 67.8
Freezing point/melting point -196°F Vapor pressure >50 atm
Flash point Vapor density 2.38
Specific gravity 1.6 Ionization potential 15.50 eV
Lower explosive limit (LEL) Not flammable Upper explosive limit (UEL) Not flammable
NFPA health rating 4 NFPA fire rating 0
NFPA reactivity rating 1 NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs
Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0382
Sampling group
Sampler/Sampling media Midget fritted glass bubbler (MFGB) containing 10 mL Ammonium Fluoride (0.1 N) [Infrequently Requested Method - OSHA staff pls contact SLTC before sampling 801-233-4900]
Sampling time*
Sampling volume (TWA)*

15 L

Sampling flow rate (TWA)*

1 L/min

Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments ISE
Method reference OSHA ID-216SG (partially validated)
Notes

Submit as a separate sample. Analysis is for fluoroborate (BF4-) ion.

Special requirements

Samples must be stored and shipped in plastic bottles.

* 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

0.1 ppm [2015]

PEL-TWA
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C

1 ppm (3 mg/m³)

REL-C

1 ppm (3 mg/m³)

TLV-C

0.7 ppm [2015]

PEL-C

1 ppm (3 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

25 ppm

Carcinogenic classifications: Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

2 mg/m³/30 mg/m³/100 mg/m³

Additional Resources and Literature References
Additional Resources and Literature References

NOAA: CAMEO Chemicals - Boron trifluoride

NIOSH: Pocket Guide to Chemical Hazards - Boron trifluoride

Literature References

  • ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Boron trifluoride. See annual publication for most recent information.
  • Fluoride Action Network Pesticide Project: Boron Trifluoride. Material Safety Data Sheet. May 2001.
  • Pohanish, R.P. (editor): Boron Trifluoride. In, Sittig's Handbook of Toxic and Hazardous Chemicals and Carcinogens, Fourth Ed., Vol. 1. Norwich, NY: Noyes Publications, William Andrew Publishing, 2002, pp. 362-364.
  • Stewart, M.J., Waisberg, R. and Pretorius, E.J.: Poisoning with boron trifluoride. S. Afr. Med. J. 88(12): 1536-1537, 1998.

Last Updated Date : 01/29/2021