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Chemical Sampling Information (CSI)
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General Description

Synonyms: Soluble rhodium trichloride; Hydrated rhodium trichloride

OSHA IMIS Code Number: 2225

Chemical Abstracts Service (CAS) Registry Number: 7440-16-6

NIOSH Registry of Toxic Effects of Chemical Substances (RTECS) Identification Number: VI9355000

Chemical Description and Physical Properties:

red-brown, odorless solid or liquid. Properties vary depending on the compound

Exposure Limits

OSHA Permissible Exposure Limit (PEL):

General Industry: 0.001 mg/m3

Construction Industry: 0.001 mg/m3 TWA

American Conference of Governmental Industrial Hygienists (ACGIH) Threshold Limit Value (TLV): 0.01 mg/m3 TWA; Appendix A4 (Not Classifiable as a Human Carcinogen)

National Institute for Occupational Safety and Health (NIOSH) Recommended Exposure Limit (REL): 0.001 mg/m3 TWA

Health Factors

Potential Symptoms: In animals: mild eye irritation; CNS damage

Health Effects: Respiratory sensitization (asthma) (HE9)

Affected Organs: Eyes

Monitoring Methods used by OSHA

Primary Laboratory Sampling/Analytical Method (SLC1):

  • sampling media: Mixed Cellulose Ester Filter (MCEF) 0.8 microns
    analytical solvent: Deionized Water
    maximum volume: 960 Liters
    minimum flow rate: 480 Liters
    maximum flow rate: 2.0 L/min
    current analytical method: Atomic Absorption Spectroscopy; AAS/GF
    method reference: 2 (OSHA In-House File)
    sampling and analytical error: 0.20
    method classification: Partially Validated
    note: Submit as a separate sample. If the filter is not overloaded, samples may be collected up to an 8-hour period. Platinum, soluble salts, and Rhodium, metal fume and dust, can be sampled on the same filter.

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