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ZIRCONIUM COMPOUNDS (as Zr)†
| CAS # | 7440-67-7 |
|---|---|
| Formula |
Zr |
| Synonyms |
zirconium metal: zirconium. Synonyms of other zirconium compounds vary depending upon the specific compound. |
| Physical description | Soft, malleable, ductile, solid or gray to gold, amorphous powder. | ||
|---|---|---|---|
| Boiling point | 6471°F | Molecular weight | 91.2 |
| Freezing point/melting point | 3375°F | Vapor pressure | 0 mmHg (approx) |
| Flash point | Vapor density | ||
| Specific gravity | 6.51 (metal) | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | 0 | |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 2620 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001] |
| 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 | AAS/AES |
| Method reference | OSHA ID-121 (fully validated) |
| Notes | Samples are analyzed gravimetrically. Results will be qualified based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes; no further work on the sample will be performed due to method limitations. |
| 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 Sampler/Sampling media | |
|---|---|
| Bulk Method | Available |
| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
|
Sampling information (see manufacturer instructions) |
|
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 |
|||||
|---|---|---|---|---|---|---|---|
| PEL-TWA |
5 mg/m³ |
REL-TWA |
5 mg/m³ |
TLV-TWA |
5 mg/m³ [1992] |
PEL-TWA |
5 mg/m³ |
| PEL-STEL | REL-STEL |
10 mg/m³ |
TLV-STEL |
10 mg/m³ [1992] |
PEL-STEL |
10 mg/m³ |
|
| PEL-C | REL-C | TLV-C | PEL-C | ||||
| Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
| Notes: |
Notes:
The REL applies to all zirconium compounds (as Zr) except Zirconium tetrachloride. |
Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
50 mg/m³ |
|||||
| Carcinogenic classifications: TLV-A4 |
Notes:
test idlh notes |
||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Zirconium, dry, coiled wire, finished metal sheets or strips NIOSH: Pocket Guide to Chemical Hazards - Zirconium compounds (as Zr) Literature References
|
Last Updated Date : 01/14/2021