YTTRIUM †
| CAS # | 7440-65-5 |
|---|---|
| Formula |
Y |
| Synonyms |
yttrium metal |
| Physical description | Dark-gray to black, odorless powder. Soft silvery-white metal in bulk. | ||
|---|---|---|---|
| Boiling point | 5301°F | Molecular weight | 88.9 |
| Freezing point/melting point | 2732°F | Vapor pressure | 0 mmHg (approx) |
| Flash point | Vapor density | ||
| Specific gravity | 4.47 | 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 | |||
| Analyte code (IMIS no.) | 2602 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (25 or 37 mm) [MAWP025A0 or MAWP037A0] | ||
| Sampling time* | 240-480 min |
||
| Sampling volume (TWA)* | 480-960 L |
||
| Sampling flow rate (TWA)* | 2 L/min |
||
| Sampling volume (STEL/Peak/C)* | 10-30 L |
||
| Sampling flow rate (STEL/Peak/C)* | 2 L/min |
||
| Analytical method instruments | AAS/AES | ||
| Method reference | OSHA ID-121 (fully validated) | ||
| Notes | Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period. |
||
| 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 | Wipe with Whatman smear tab. [WHA1450993] |
|---|---|
| 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 |
1 mg/m³ |
REL-TWA |
1 mg/m³ |
TLV-TWA |
1 mg/m³ [1986] |
PEL-TWA |
1 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 |
N |
Skin notation |
N |
| Notes: | Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
500 mg/m³ |
|||||
| Carcinogenic classifications: Not listed | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Yttrium NIOSH: Pocket Guide to Chemical Hazards - Yttrium Literature References
|
Last Updated Date : 01/14/2021