Agent Name

Platinum

CAS Number

7440-06-4

Formula

Pt

Major Category

Metals

Synonyms

C.I. 77795; Liquid bright platinum; Platin [German]; Platinum Black; Platinum sponge; Platinum, elemental; Platinum, metal; [ChemIDplus]

Category

Elements, Metallic

Description

Silver-grey lustrous solid; Also available as black powder (platinum black) and spongy solid (platinum sponge); [Merck Index]

Sources/Uses

Found alloyed with iridium, osmium, palladium, rhodium, and ruthenium in gravels and sands; [Merck Index] Used to make apparatus for laboratory and industrial use (thermocouples, platinum resistance thermometers, acid proof containers, electrodes, etc.); in dentistry, jewelry, and electroplating; in spinnerets for making rayon, electrical contacts, and glass fiber; in permanent magnets; to increase the octane number of liquid fuels; in automobile catalytic converters; as catalyst for curing of plastics; as catalyst for dehydrogenation, isomerization, and oxidation in the production of sulfuric, nitric, and organic acids and amines; for surgical instruments and implants; Platinum nanoparticles are used in scanning probes (microscopy) and catalysts; [HSDB]

Comments

A skin, eye, and respiratory tract irritant; [Merck Index] Catalytic material that is fire and explosion hazard on contact with many organic and inorganic substances; An eye and respiratory tract irritant; (powdered form) [ICSC] Platinum oxides and soluble platinum salts are sensitizers. Platinum is nontoxic in the metallic state, except possibly for the fine powdered form. [Sullivan, p. 911, 913] Platinum dust is inert and nonallergenic; [Nordberg, p. 1136] Tram drivers in Rome were exposed to Pt, Rh and Pd from catalytic converters at levels about 10 times lower than those known to cause adverse effects in workers. [PMID 18849761] In a study of platinum nanoparticles, platinum ions were not released into the culture media suggesting minimal cellular influence; [PMID 21804981] See "Platinum, soluble salts."

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

1 mg/m3

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Processes

Industrial Processes with risk of exposure:

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