Ruthenium Bead Ru Irregular Melted Ball 5g Platinum Group Metals ≥99.98%

Description

Price is for
ONE
piece
Specification:
Material: Ruthenium Ru Metal
Size: Irregular Bead
Purity: Ru ≥ 99.98 %
Weight: approx. 5 g (Range from 4.9 to 5.2 g)
Usage: Education Gifts, Science, Professional Exhibits, Eternal Collection, etc.
Quantity: 1 piece
Feature:
It's a wonderful collection for chemical elements and natural sciences lover.
We made this in cutting edge national level laboratory with rigorous process and restrictive standard.
This item is not only for retail selling but bulk order is very welcome as well.
The Ruthenium is a hard and brittle silver-grey platinum group noble metal.
It is
one of the rarest metals
on Earth. The content of the earth's crust is only
one part per billion
.
The nature of ruthenium is very stable.
It can resist hydrochloric acid, sulfuric acid and nitric acid at normal temperature. The aqua regia, even at 100
℃
, nothing effect on ruthenium.
In fact, after processing metal ruthenium, it often uses aqua regia to clean its surface. Metal ruthenium is mainly used in the fields of catalysts, platinum-palladium hardeners, wear-resistant hard alloys, and the like. Although both platinum and palladium are more abundant than ruthenium, the price of ruthenium is lower than former two platinum group noble metals.
The melting point of the metal ruthenium is as high as 2310
℃
, and the theoretical density can reach 12.45 g/cm
3
. In ordinary, products are usually prepared by powder metallurgy, the density is not high by the smelting method.
Thus,
our product made via smelting method
is rare on commercial market.
Ruthenium is a chemical element with symbol Ru and atomic number 44. It is a rare transition metal belonging to the platinum group of the periodic table. Like the other metals of the platinum group, ruthenium is inert to most other chemicals. Russian-born scientist of Baltic-German ancestry Karl Ernst Claus discovered the element in 1844 at Kazan State University and named it after the Latin name of his homeland, Ruthenia. Ruthenium is usually found as a minor component of platinum ores; the annual production has risen from about 19 tonnes in 2009 to some 35.5 tonnes in 2017. Most ruthenium produced is used in wear-resistant electrical contacts and thick-film resistors. A minor application for ruthenium is in platinum alloys and as a chemistry catalyst. A new application of ruthenium is as the capping layer for extreme ultraviolet photomasks. Ruthenium is generally found in ores with the other platinum group metals in the Ural Mountains and in North and South America. Small but commercially important quantities are also found in pentlandite extracted from Sudbury, Ontario and in pyroxenite deposits in South Africa.
For more high purity element collection, welcome to visit our store on eBay via,
https://www.ebay.com.hk/str/hugohk/Chemical-Element/_i.html?_storecat=32591958018
Shipment：
All of our small parcels are fulfilled the eBay's m
andatory
shipment policy
. Items would be carried by eBay
designated
carrier,
SpeedPAK
, to most of supporting countries. Its
official declaration of delivery efficiency is very similar to ePacket.
ePacket via China Post: about 11-66 days to most of counties. Our average records are 7 to 21 days to North America. Parts of west
coastal
cities in America has the best record like just 7 to 15 days.
EMS via China Post: Similar to the ePacket above.
eExpress via Hong Kong Post: about 15-50 days (individual countries or even longer)
All three above are national carriers in our region. Once it dispatches abroad, it would be delivered by your local national post like USPS, Canada Post, Australia Post, Royal Mail, or Deutsch Post, etc.
DHL: about 3-7 days (individual countries or even longer)
Note: If DHL doesn’t support service to certain areas or countries, we would switch EMS to ship your item.
The EP symbol and oversea selling is possessed by Extraordinary Precision Engineering Company (HK)
Thank you.