Platinum CAS 7440-06-4

Platinum

Platinum, 1% on activated carbon paste, Type 163;Platinum, 10% on activated carbon paste, Type 128M;Platinum, 5% on activated carbon paste, Type 128M;Platinum, 5% on carbon paste, B501032-5;Platinum, 3% on carbon paste, B103032-3;Platinum, 5% on alumina powder, B301099-5;Platinum, 5% on activated carbon paste, Type 18;Platinum, 5% on carbon paste, B501018-5

7440-06-4

Pt

BASFCYQUMIYNBI-UHFFFAOYSA-N

195.08

194.965

231-116-1

TSCA listed

White

28439000

Precious Metal Catalysts

0

Platinum is classed by tradition and commercial usefulness as a precious metal that is soft,dense, dull, and silvery-white in color, and it is both malleable and ductile and can be formedinto many shapes. Platinum is considered part of the “precious” metals group that includesgold, silver, iridium, and palladium. It is noncorrosive at room temperature and is not solublein any acid except aqua regia. It does not oxidize in air, which is the reason that it is foundin its elemental metallic form in nature. Its melting point is 1,772°C, its boiling point is3,827°C, and its density is 195.09g/cm3.

0.03

White wire

21.45 g/cm3 (lit.)

1772 °C (lit.)

3827 °C (lit.)

3825°C

n20/D1.347

Insoluble

Flammables area

0 mmHg (approx)

While the metal itself is systemically of little concern, its salts are very toxic. The cis-platinum compounds can react with disulfides and amino groups and form adducts with some bases in nucleic acids. Platinum compounds inhibit a few enzymes, including leucine aminopeptidase, and the hydrogenases of malate, alcohol, and lactate. Cisplatin can form crosslinks between strands of DNA.

Non flammable

Finely divided platinum is a powerful catalyst & can be dangerous to handle. Used catalysts are especially dangerous & may be explosive.

0.5 (20°C in H2O)

Massive Platinum (lump, ingot, etc.) is generally inert. Dissolves readily in aqua regia (mixture of concentrated hydrochloride and concentrated nitric acids). Reacts rapidly with molten alkali metal oxides and peroxides. Reacts with F2 and Cl2 at red heat. Absorbs large volumes of hydrogen when hot. Catalyzes the exothermic oxidation of ammonia by air. Finely divided Platinum is incompatible with aluminum, acetone, arsenic, ethane, hydrazine, hydrogen peroxide, lithium, phosphorus, selenium, tellurium and many fluorides. Explosion can occur upon contact with hydrogen peroxide. Platinum black, sponge and supported catalysts have strong catalytic activity; can be dangerous to handle in the vicinity of other chemicals on this account. Used Platinum catalysts are particularly dangerous and can cause explosions. Ethanol or methanol can ignite on contact with a Platinum-black catalyst. (Urben 1794).

2-8°C