Beryllium Oxide
CAS Number
1304-56-9Synonym
Beryllia; Beryllium monoxide; Bromellete; Thermalox 995
Occurrence/Use
Sintered to produce ceramic; semiconductor parts, filler in thermal interface materials, electronic and microelectronic applications
| Last CHHSL revision: |
3/2009
|
|---|---|
| CHHSL Comments: |
For chemical-specific screening levels for use in assessing contaminated sites, please see HHRA Note 3 (DTSC HERO). https://www.dtsc.ca.gov/assessingrisk/humanrisk2.cfm |
| Latest Criteria: |
California Public Health Goals
|
|---|---|
| Inhalation Unit Risk (μg/cubic meter)-1: |
2.4 E-3
|
| Inhalation Slope Factor (mg/kg-day)-1: |
8.4 E+0
|
| Comments/References: |
OEHHA 2003. Public Health Goal for Beryllium and Beryllium Compounds in Drinking Water.
US EPA 1998. IRIS Database: Beryllium and compounds.
US EPA 1987. Relative Carcinogenic Potencies Among 59 Chemicals. |
Air
| Chronic Inhalation REL (μg/m3): |
0.007 (inhalation); 2.0 μg/kg BW-day (oral)
|
|---|---|
| Chronic Target Organs: |
Inhalation: Respiratory system, immune system. Oral: Alimentary system (gastrointestinal tract)
|
| Human Data: |
Yes
|
| Last Chronic REL Revision: |
2001
|
| Chronic Reference Exposure Levels Comments: |
OEHHA 2008. Technical Supporting Document for Noncancer RELs, Appendix D3. Listed as Beryllium & beryllium compounds. |
Water
| Public Health Goal (mg/L): |
0.001
|
|---|---|
| Public Health Goal - Download: |
