Scientists studied samples of the metal following European
exploration of the area began.
Platinum has been in use by ancient people in Central and
Even though Spanish scientist Antonio de Ulloa is given the
credit for finding platinum in 1748, a big number of European scientists
started studying and trying to isolate platinum.
Such as the other platinum metals, a common way of
production of platinum is as a waste item in the refining of nickel and copper.
This contamination by other members of the PMG led to
inaccuracies in their experiments over time.
The kilogram is still officially defined by a
platinum-iridium cylinder produced in 1879.
For nearly 100 years (1889 to 1960), a ninety% platinum
alloy was the global standard for the definition of one meter.
Only 1 of those naturally taking place isotopes is
Platinum has 6 isotopes that occur naturally.
Platinum is regarded as very rare, at just 0.005 parts per
million in the earth's crust.
There are also thirty-one synthesized isotopes of platinum.
It does take place naturally in an uncombined state.
The Earth's moon and meteorites usually contain higher
concentrations of platinum.
The identical locations that created the original samples
taken to Europe for more study are still the main sources of platinum mining.
It is also often discovered combined with iridium.
Although treasured for jewelry making, almost 50 % of
platinum's major industrial application is in catalytic converters with regard
South Africa is the top producer of refined platinum,
handling 77% of the global share.
While vehicles and jewelry making use about 46% and 31%
respectively, all other applications of platinum, such as coinage and
investing, constitute the remaining amount.
Uses of Platinum
Platinum is broadly used like a catalyst with regard to
chemical reactions. The most crucial use of platinum is in vehicles, like a
catalytic converter, facilitating the whole combustion of unburned hydrocarbon
moving through the exhaust.
Platinum is utilized in decoration, jewelry and dental work.
The metal and its alloys are also employed for fine resistance wires,
electrical contacts and medical / laboratory instruments.
An alloy of platinum and cobalt is used to make powerful permanent
The metal is also used to produce electrodes sealed in glass
(as its thermal coefficient of expansion is almost the same to that of glass).
Appearance and Characteristics:
Platinum is regarded as non-toxic.
Physical Properties of Platinum
Platinum is actually a precious metal; soft, silvery-white
and dense having a beautiful lustrous sheen.
It is malleable and ductile and has a higher melting point.
Platinum does not oxidize in atmosphere even at high
temperatures and is unaffected by common acids.
It melts in aqua regia (mixture of nitric acid and
hydrochloric acid in the ratio 1:3) building chloroplatinic acid (H2PtCl6).
It is also corroded by cyanides,
halogens, caustic alkalis and sulfur.