Label abbreviations descriptions

BARIUM, SOLUBLE COMPOUNDS (EXCEPT BARIUM SULFATE)†

Chemical Identification
CAS # 7440-39-3
Formula

Ba
Synonyms

Synonyms vary depending upon the specific soluble barium compound.

Physical Properties
Physical description A silver to white metallic, odorless solid
Boiling point 2984°F Molecular weight 137.33
Freezing point/melting point 1337°F Vapor pressure 10 mmHg at 1920°F
Flash point Vapor density
Specific gravity 3.51 at 68°F Ionization potential
Lower explosive limit (LEL) Upper explosive limit (UEL)
NFPA health rating NFPA fire rating
NFPA reactivity rating NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Analyte code (IMIS no.) 0310
Sampling group
Sampler/Sampling media Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]
Sampling time*

240-480 min
Sampling volume (TWA)*

480-960 L
Sampling flow rate (TWA)*

2 L/min
Sampling volume (STEL/Peak/C)*
Sampling flow rate (STEL/Peak/C)*
Analytical method instruments Gravimetric
Method reference OSHA PV2121 (partially validated)
Notes

Samples are first analyzed gravimetrically. If the gravimetric result of a sample yields a concentration below the permissible exposure limit (PEL), the SLTC will report the calculated air concentration from the gravimetric result, qualified as less than or equal to the gravimetric result; no further work on the sample will be performed.

If the gravimetric result indicates an air concentration greater than the PEL, the sample will proceed for elemental analysis. Results will be reported from the elemental analysis for the element only; the stated identity of the actual sample contents is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.

Analysis for this analyte is based on water solubility.
Special requirements

FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

* 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

Wipe with Whatman smear tab. [WHA1450993]
Bulk Method

On-Site Screening Techniques
Device
Model/Type
Sampling information
(see manufacturer instructions)

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

0.5 mg/m³

 REL-TWA

0.5 mg/m³

 TLV-TWA PEL-TWA

0.5 mg/m³
PEL-STEL REL-STEL TLV-STEL PEL-STEL
PEL-C REL-C TLV-C PEL-C
Skin notation

N

 Skin notation

N

 Skin notation

NA

 Skin notation

NA
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

1100 mg Ba/m³ 
Carcinogenic classifications: EPA-CBD; NL; D, TLV-A4 Notes:
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References

Last Updated Date : 04/02/2024