Wednesday, November 30, 2011

How to Buy Caesium

Caesium or cesium is the chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28 °C (83 °F), which makes it one of only five metals that are liquid at or near room temperature. Caesium is most notably used in atomic clocks. Also webmasters and bloggers for instance need to make sure the images they post on their websites are optimized, to avoid prolonged loading times for their visitors. The software allows you to view instantly the compression results, helping you to decide how much optimization you need. Caesium-based atomic clocks observe electromagnetic transitions in the hyperfine structure of caesium-133 atoms and use it as a reference point.
Caesium metal is highly reactive and very pyrophoric. In addition to igniting spontaneously in air, it reacts explosively with water even at low temperatures, more so than other members of the first group of the periodic table. Caesium is a very soft (it has the lowest Mohs hardness of all elements (0.2)), very ductile, silvery-white metal, which develops a silvery-gold hue in the presence of trace amounts of oxygen.
Caesium is a relatively rare element as it is estimated to average approximately 3 parts per million in the Earth's crust. Caesium can set different compression levels to each image, saving a lot of time, ensuring great results!
The mining of pollucite ore is a selective process and is conducted on a small scale in comparison with most metal mining operations. The ore is crushed, hand-sorted, but not usually concentrated, and then ground. Otherwise, it depends on whether the caesium lands on farms and gardens, or relatively undisturbed forests and mountains. Symbol: Cs; Atomic Number: 55; Atomic weight: 132.9054519.
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Tuesday, November 29, 2011

How to Buy Caesium iodide

Caesium iodide is a very useful material with a transmission range from the visible
region out to 70 microns through to a 2mm thick window. CsI is very soft and water-
soluble and when humidity is relatively high polished surfaces may be damaged by moisture
in the atmosphere.  CsI has a wider transmission range than the more common potassium
bromide beamsplitters, extending usefulness into the far infrared. A problem with
optical-quality CsI crystals is that they are very soft with no cleavage, making it
difficult to create a flat polished surface.
Caesium Iodide is hygroscopic and readily dissolves in water. This property means that it
needs to be kept away from water and also makes it difficult to polish.
An important application of caesium iodide crystals, which are scintillators, is
electromagnetic calorimetry in experimental particle physics, and is sometimes used for
components in the widest range spectrophotometers. An extremely soft material, Caesium
Iodide is extremely difficult to polish, and so performance is compromised for range.
Doped with Thallium, CsI(Tl) is a useful scintillator which emits at a wavelength that is
a good match for Silicon photodiodes. Arrays of Caesium Iodide are used in security
imaging systems. Principally used for Infrared Spectroscopic windows and also for beam
splitters in FTIR Instumentation. CsI is also available thallium doped for scintillation
applications. It is an ionic compound often used as the input phosphor of an x-ray image
intensifier tube found in fluoroscopy equipment.
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Sunday, November 27, 2011

What is Caesium iodide

Caesium iodide is a very useful material with a transmission range from the visible region out to 70 microns through to a 2mm thick window. CsI is very soft and water-soluble and when humidity is relatively high polished surfaces may be damaged by moisture in the atmosphere. Principally used for Infrared Spectroscopic windows and also for beam splitters in FTIR Instumentation. CsI is also available thallium doped for scintillation applications. It is an ionic compound often used as the input phosphor of an x-ray image intensifier tube found in fluoroscopy equipment.
An important application of caesium iodide crystals, which are scintillators, is electromagnetic calorimetry in experimental particle physics, and is sometimes used for components in the widest range spectrophotometers. An extremely soft material, Caesium Iodide is extremely difficult to polish, and so performance is compromised for range. Doped with Thallium, CsI(Tl) is a useful scintillator which emits at a wavelength that is a good match for Silicon photodiodes. Arrays of Caesium Iodide are used in security imaging systems.
Caesium Iodide is hygroscopic and readily dissolves in water. This property means that it needs to be kept away from water and also makes it difficult to polish. CsI has a wider transmission range than the more common potassium bromide beamsplitters, extending usefulness into the far infrared. A problem with optical-quality CsI crystals is that they are very soft with no cleavage, making it difficult to create a flat polished surface.
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Wednesday, November 23, 2011

Metal Compounds for Sale

Metal Compounds can be classified according to the number of different elements that they contain: binary (two), ternary (three), etc.
An example is the compound Mg2Sn.  This is made by fusing together a mixture of magnesium and tin of the appropriate composition, and cooling the resulting melt. The product is homogeneous, as can be seen by cutting and polishing it, and examining the polished surface under a microscope. If more magnesium or tin is used than required by the formula Mg2Sn, the product ceases to be homogeneous - crystals of Mg2Sn can be seen embedded in a matrix of smaller crystals containing the excess of magnesium or tin. The compound Mg2Sn is a bluish-white lustrous solid, having all the properties of a metal.
Metallic compounds fall into one of two categories of compound:
1. Stoicheiometric compounds. These are compounds that obey the law of constant composition to very high accuracy, e.g. CH4, NaCl, Mg2Sn. They are also called “definite” compounds or “Daltonides”. [The word “stoicheiometric” comes from “stoicheiometry”, the name given to the measurement of the proportions of elements in compounds (Greek stoicheion, element, metron, measure).]
2. Non-stoicheiometric compounds. These have a variable composition within certain limits. They are also called “indefinite” compounds or “Berthollides” (after the French chemist Claude Berthollet, 1748-1822, who disputed the law of constant composition).
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Tuesday, November 22, 2011

Where to Buy Copper powder

Copper powders are used in many different industries for many different applications. It can be udes in Brazing, Sintered Products, Friction Products, Soft Magnetic Products, Chemicals, Metallurgy, Filtration, Printing, Surface Coating, Welding, Copper Fortification, metal injection molding (MIM), diamond cutting tools, lubricants, etc.
Properties:
Purity: 99.%
Dimensions: 200mesh
Place of Origin: Shandong China (Mainland)
Alloy Or Not: Non-Alloy
Color: rose red
Specifications:
Gas atomized copper powder and brass powder with spherical particle.
copper powder with spherical particle.-20mesh~-400mesh size.
Relevant product:
1.Potassium iodide
2.Caesium iodide
3.Scandium iodide

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Monday, November 21, 2011

Strontium iodide for Sale

Strontium iodide is a salt of strontium and iodine. It is an ionic, water-soluble, and deliquescent compound. Used in medicine and as a chemicals intermediate.
CAS:0476-86-5
Molecular formula: SrI2
Molecular Weight:  341.43 g/mol
Mp:   515°C
Properties:
Strontium iodide grows yellow when exposed to air. It is used as a thermal conductor, an electrical conductor, a building material, and a constituent of various metal alloys. Pure Strontium is rather soft and malleable, and a freshly exposed surface has a pinkish or peachy color.
Application:
It can be used in medicine as a substitute for potassium iodide.
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Sunday, November 20, 2011

Lithium-Cobalt-Dioxide

Rhodium Powder has a corrosion resistance, even higher in boiling aqua regia. But the hydrogen bromate slightly corrodes rhodium. It is used as the raw materials for instrument, chemical industry and precision alloys. Wet iodine and sodium hypochlorite can corrode it. It has the chemical symbol Rh and atomic number 45. It is composed of only one isotope, 103Rh. Rhodium powder can be used as raw materials of electrical instruments, chemical engineering and manufacturing precision alloy etc. Rhodium is a chemical element that is a rare, silvery-white, hard and chemically inert transition metal and a member of the platinum group. Rhodium detectors are used in nuclear reactors to measure the neutron flux level. CAS:7440-16-6, Molecular Weight:102.91.
Rhodium is a so-called noble metal, resistant to corrosion, found in platinum- or nickel ores together with the other members of the platinum group metals. Molecular Formula: Rh The element's major use (about 80% of world rhodium production) is as one of the catalysts in the three-way catalytic converters of automobiles. Because rhodium metal is inert against corrosion and most aggressive chemicals, and because of its rarity, rhodium is usually alloyed with platinum or palladium and applied in high-temperature and corrosion-resistive coatings.

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Saturday, November 19, 2011

What is Chloroplatinic acid

Chloroplatinic acid is also called Hexachloroplatinic acid. Chloroplatinic acid, is a reddish-brown solid. Chloroplatinic acid is soluble in water and will yield a mildly acidic solution. It is the chemical compound usually found as the hexahydrate. This compound was first reported by John Speier and colleagues from Dow Corning Corporation to catalyze the reaction of silyl hydrides with olefins, hydrosilylation. This is one of the most readily available soluble compounds of platinum. It may cause illness from inhalation of the dust and Chloroplatinic acid is irritating to skin and eyes.  The commercial product is the oxonium salt of the hexachloroplatinate(IV) anion. It is rarely obtained in the pure state.  When heated to high temperatures Chloroplatinic acid may decompose to toxic chloride fumes. Chloroplatinic acid may burn, but may be difficult to ignite.
Phisical and chemical properties:
CAS:16941-12-1 
Molecular formula: H2PtCl6
Molecular Weight:  409.81 g/mol
mp :  60 °C(lit.)
density :  2.43 g/mL at 25 °C(lit.)
refractive index :  n20/D 1.347
storage temp. :  2-8°C
solubility :  H2O: 0.5 M at 20 °C, clear, orange
form :  powder and chunks
color :  orange
Water Solubility :  soluble
Merck : 14,7526
Stability::  May decompose on exposure to light, air or moisture.
Chemical Properties Orange/Red Crystals
Air & Water Reactions, Soluble in water. Reactivity Profile
Application:
Chloroplatinic acid is mainly used for manufacturing indelible ink and in electroplating processes. Like many platinum compounds, chloroplatinic acid is used in catalysis.
Related compounds:
Chloroplatinic acid prepared from aqua regia is occasionally contaminated with (NO)2PtCl6. This species is obtained by the reaction of nitrosyl chloride and Pt metal.
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Thursday, November 17, 2011

Ni-Mn-Co powder catalyst for synthetic diamond Suppliers

Ni-Mn-Co powder catalyst for synthetic diamond is at different stage of the synthesis:

1.spherical Morphology,even chemical composition and fine microstructure are eneficial to nucleation and growth of diamond;
2.Fit for the synthesis of diamond not only of fine particles abrasive grade,but also of coarse particles high grade,which is advantageous to the synthesis of diamonds with different variety and grades;
3.The fracture of the diamond with different diamond grain sizes and the interface where the diamond is crystallized were analyzed through SEM and AES, respectively;
4.In the synthesis system, the carbon can diffuse in three directions, which is helpful for diamond to be crystallized symmetrically and to increase the integration of the crystal;
5.Production cost greatly reduces while yield per cavity increases nearly 30%,electrical current density during synthesis drops 20% resulting in the reduction of consumption of hard alloy head hammer,and saving nearly 30% of metal catalyst;

The results indicate that the NiMnCo powder catalyst is of wide application range, not only being used to synthesize coarse size and high strength diamond, but also being used to synthesize fine size diamond for grind materials.

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Tuesday, November 15, 2011

How to Get Potassium iodide

Potassium iodide is an drug of inanimate, non-biological origin, which is the most important commercial iodide compound. Aged and impure samples are yellow. It is a white salt with the chemical formula KI. How ever KI is a precursor to silver iodide (AgI) an important chemical in photography. Potassium iodide is used medicinally in tablets.

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What is Rubidium

Rubidium is a chemical element with the atomic number 37 and the symbol Rb. Atomic Number: 37. It is a soft, silvery-white metallic element of the alkali metal group. Symbol:Rb. It is the second electropositive of the non-radioactive alkali metals and melts when it is at a temperature of 39.3 °C (102.7 °F). Rubidium is the twenty-third most abundant element in the Earth's crust, usually as abundant as zinc and rather more common than copper. Although rubidium is more abundant in Earth's crust than  the lack of a mineral rich in rubidium limits the production of rubidium compounds to 2 to 4 tonnes per year and caesium the limited applications. Rubidium has a very low ionization energy of only 406 kJ/mol. Atomic weight: 85.4678. Rubidium has a number of oxides, including Rb9O2, rubidium monoxide (Rb2O) and Rb6O, which form if rubidium metal is exposed to air; rubidium in excess oxygen gives the superoxide RbO2. Rubidium and potassium show a very similar violet color in the flame test, which makes spectroscopy methods necessary to distinguish the two elements. Rubidium chloride (RbCl) is probably the most used rubidium compound. It is taken up to replace potassium. It is in only small quantities in living organisms.

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Monday, November 14, 2011

What is Extra Fine Nickel Powder

Extra Fine Nickel Powder is usually used as various high gloss decorative paint and plastics and replace aluminum powder to be anti-corrosion coatings in the water system,etc. Molecular weight: 58.69g/mol. Fine spherical nickel powder can be used for conductive ink. Molecular Formula: Ni. It also can increases conductivity in the active mass of rechargeable batteries and in conductive paints. It is a metallic pigment with the main component nickel.Mainly used in the coatings and plastics for conductive shielding paint tiny step and radiofrequency electromagnetic interference. Its CAS is 7440-02-0. It has a significant effect on volume and surface effects, pressure, thermal, magnetic, optical absorption and chemical activity, etc. To show many special properties, they are widely used in cemented carbide, catalyst, conductive paste, multi-ceramic capacitors and many other fields.

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Wednesday, November 9, 2011

How to Buy Palladium chloride

Palladium(II) chloride, also known as palladium dichloride, are the chemical compounds. PdCl2 is a common starting material in palladium chemistry – palladium-based catalysts are of particular value in organic synthesis. It is prepared by chlorination of palladium. Its CAS is 7647-10-1. Molecular formula: PdCl2. Molecular Weight: 177.33 g/mol.

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Tuesday, November 8, 2011

Ruthenium(III) chloride for Sale

Ruthenium(III) chloride is the chemical compound with the formula RuCl3. "Ruthenium(III) chloride" more commonly refers to the hydrate RuCl3·xH2O. Both the anhydrous and hydrated species are dark brown or black solids. The hydrate, with a varying proportion of water of crystallization, often approximating to a trihydrate, is a commonly used starting material in ruthenium chemistry. CAS:10049-08-8. Molecular formula: RuCl3·xH2O. Molecular Weight: 207.43 g/mol.

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Monday, November 7, 2011

How to Buy Chloroplatinic acid

Chloroplatinic acid or hexachloroplatinic acid is the chemical compound usually found as
the hexahydrate. This is one of the most readily available soluble compounds of platinum.
It is rarely obtained in the pure state. The commercial product is the oxonium salt of the
hexachloroplatinate(IV) anion. CAS:16941-12-1. Molecular formula: H2PtCl6. Molecular
Weight:  409.81 g/mol.

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Sunday, November 6, 2011

How to Buy Hexachloroiridic acid hexahydrate

Hexachloroiridic acid hexahydrate absorbs moisture easily , can soluble in water, hydrochloric acid and alcohol.It can loss of crystal water to break down if exposed to strong heat.It is used in the manufacture of coated electrodes and is an important chemical reagent iridium catalyst and raw materials. It is also called Hydrogen hexachloroiridate (IV) hexahydrate. Its molecular formula is H2IrCl6.6(H2O). Molecular weight is 515.04. CAS is 16941-92-7.

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Thursday, November 3, 2011

Rubidium for Sale

Rubidium is a chemical element with the symbol Rb and atomic number 37. Rb is a soft, silvery-white metallic element of the alkali metal group. Its Symbol is Rb. Atomic Number: 37. Atomic weight: 85.4678.

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Wednesday, November 2, 2011

Caesium for Sale

Caesium or cesium is the chemical element with the symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal with a melting point of 28 °C (83 °F), which makes it one of only five metals that are liquid at or near room temperature. Caesium is most notably used in atomic clocks.
Symbol: Cs
Atomic Number:55
Atomic weight:132.9054519


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How to Get Electrolytic MnO2 titanium base alloy coating anode

As the MnO2 titanium base alloy coating anode melted the titanium-manganese mixed powder with the high temperature and high vacuum in the form of invasion of infiltration of titanium eutectic matrix, it combined with a solid, mechanical strength, corrosion resistance and a good electrochemical activity.Products of manganese dioxide adopted  this electrode are of high quality. An electrode assembly can be used for multiple electrolysis. Do not have to sandblast, anti-electrolysis and any other treatment.



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