Label abbreviations descriptions

BROMINE†

Chemical Identification
CAS # 7726-95-6
Formula

Br₂
Synonyms

molecular bromine

Physical Properties
Physical description Dark reddish-brown, fuming liquid with suffocating, irritating fumes.
Boiling point 139°F Molecular weight 159.8
Freezing point/melting point 19°F Vapor pressure 172 mmHg
Flash point Vapor density 5.51
Specific gravity 3.1023 Ionization potential 10.55 eV
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating 3 NFPA fire rating 0
NFPA reactivity rating 0 NFPA special instruction OX: Possesses oxidizing properties
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0390
Sampling group
Sampler/Sampling media Midget fritted glass bubbler (MFGB) containing 10 mL 0.003 M NaHCO₃/0.0024 M Na₂CO₃ - Bromine Sampling Solution [SLTC110SOL]
Sampling time*
Sampling volume (TWA)*

30 L
Sampling flow rate (TWA)*

0.5 L/min
Sampling volume (STEL/Peak/C)*

7.5 L
Sampling flow rate (STEL/Peak/C)*

0.5 L/min
Analytical method instruments IC
Method reference OSHA ID-108 (fully validated)
Notes

These media are prepared by SLTC as needed and are not available for immediate shipment. Please allow time for SLTC to prepare these media prior to sampling.
Special requirements

Submit as a separate sample.

* 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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

On-Site Screening Techniques
Device Detector tube Detector tube
Model/Type Matheson-Kitagawa 8014-114 Gastec 8LA
Sampling information
(see manufacturer instructions) 		follow mfr instructions, approx 1-20 ppm range 4 strokes, 0.05-0.8 ppm range

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

0.1 ppm (0.7 mg/m³)

 REL-TWA

0.1 ppm (0.7 mg/m³)

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

0.3 ppm (2 mg/m³)

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

0.1 ppm (0.7 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:

Visit the ACGIH TLV site for specific data

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

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

0.1 ppm/0.5 ppm/5 ppm

Additional Resources and Literature References

Last Updated Date : 04/03/2024