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Chemical Sampling Information (CSI)
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General Description

Synonyms: Yttrium metal

OSHA IMIS Code Number: 2602

Chemical Abstracts Service (CAS) Registry Number: 7440-65-5

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: ZG2980000

NIOSH Pocket Guide to Chemical Hazards, Yttrium: Chemical description, physical properties, potentially hazardous incompatibilities, and more

Chemical Description and Physical Properties:
solid (appearance, odor, and properties vary depending upon specific compound)
Incompatibilities: Yttrium nitrate; combustible materials
Exposure Limits

OSHA Permissible Exposure Limit (PEL):
General Industry: 1 mg/m3

Construction Industry: 1 mg/m3 TWA
American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 1 mg/m3 TWA; (metal and compounds, as Y)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 1 mg/m3 TWA

Health Factors

Potential Symptoms: Eye irritation; In animals: pulmonary irritation; eye injury; possible liver damage

Health Effects: Pneumoconiosis (Diffuse Fibrosis) (HE10)

Affected Organs: Eyes, lungs
Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):
  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    maximum volume: 960 Liters   
    minimum volume: 480 Liters   
    maximum flow rate:     2.0 L/min
    current analytical method: Atomic Absorption Spectroscopy; AAS
    method reference: 2 (OSHA In-House File)
    method classification: Not Validated
    alternate analytical method: Inductively Coupled Argon Plasma; ICP/DCP-AES
    note: Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period.
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Page last updated: 01/15/1993