Buy Lab Chemicals Online From Manufacturers Suppliers Exporters - Worldofchemicals

chemical-categories

Calcium Nitrate

Calcium nitrate is an inorganic compound. It absorbs moisture from the air and is commonly found as a tetrahydrate. It is mainly used as a component in fertilizers. It is used as a source of calcium and nitrate-nitrogen for crops.

Properties Suppliers
Calcium Oxide

Calcium oxide is also called as quicklime or burnt lime. It is a widely used chemical compound. Calcium oxide is a white, caustic, alkaline, crystalline solid at room temperature. Calcium oxide is usually made by the thermal decomposition of materials such as limestone, or seashells, that contain calcium carbonate in a lime kiln.It is prepared by heating calcium carbonate in a special lime kiln to about 500°C to 600°C, decomposing it into the oxide and carbon dioxide. Calcium oxide is widely used in industry.Calcium oxide is a basic anhydride, reacting with water to form calcium hydroxide.

Properties Suppliers
Calcium Sulfate Dihydrate

Calcium sulfate dihydrate is the calcium salt of sulphuric acid. It is used as analytical reagent, also used in water treatment, papermaking, printing, dyeing, metallurgy and coating, adhesive production.

Properties Suppliers
Calcium Sulphate

Calcium Sulphate is a common laboratory and industrial chemical. It is also used as a coagulant. Calcium sulfate is a common component of fouling deposits in industrial heat exchangers.Calcium sulfate can be used to make calcium tablets and it is used to cure brittle nails, weak hair, yellow teeth, frequent muscle cramps, joint pains, constant fatigue, kidney stones, PMS, gallstones, and high cholesterol.

Properties Suppliers
Calmagite

Calmagite is a complexometric indicator used in analytical chemistry to identify the presence of metal ions in solution.Calmagite will be wine red when it is bound to a metal ion and may be blue, red, or orange when it is not bound to a metal ion. Calmagite is often used in conjunction with EDTA, a stronger metal binding agent. It is also used in the quantitation of magnesium in the clinical laboratory.

Properties Suppliers
Carminic Acid

Carminic acid is a red glucosidal hydroxyanthrapurin that occurs naturally in some scale insects, such as the cochineal and the Polish cochineal. The insects produce the acid as a deterrent to predators. The chemical structure of carminic acid consists of a core anthraquinone structure linked to a glucose sugar unit. It is used as coloring agent in food, cosmetics and meications. It is also used as histologic stains for biological materials.

Properties Suppliers
Ceric Sulfate

The ceric ion is a strong oxidizer, especially under acidic conditions. If ceric sulfate is added to dilute hydrochloric acid, then elemental chlorine is formed, albeit slowly. With stronger reducing agents it reacts much faster. Ceric sulfate is used in analytical chemistry for redox titration, often together with a redox indicator.

Properties Suppliers
Cerium Chloride Heptahydrate Industrial Grade 99%

Cerium chloride heptahydrate is white to yellow crystalline granular, which is a rare earth salt. It tend to dissolve in water and ethyl alcohol, which turn into anhydrous. When 90℃, cerium(III) chloride heptahydrate starts to lose water. After 230℃, it turn into cerium(III) chloride anhydrous. Cerium dioxide is the raw material.

Cerium Chloride Heptahydrate

CAS No.:18618-55-8 EINECS No.:232-227-8 Molecular Formula:CeCl3.7H2O Molecular Weight:372.58
Melting Point:848℃ Density:3.92    

Applications

Cerous chloride heptahydrate use as analytical reagent and catalyst, which is also raw material for production of metal cerium. It applies to medical intermediate, hard alloy additive, cerium salts and chemical reagents.

Properties Suppliers
Cerium Fluoride Industrial Grade 99.99%

Cerium fluoride is white powder or 3-6mm melt particle of hexagonal crystal system, which is rare earth metal fluoride. It absorb moisture and is hard to dissolve in water, which hydrolyze slowly. Cerium dioxide is the raw material.

Cerium Fluoride

Purity: Ce/RE 99.99% 4N

CAS No.:7758-88-5 EINECS No.:231-841-3 Molecular Formula:CeF3 Molecular Weight:197.12
Density:6.517 Melting Point:1437℃ Boiling Point:2280℃  

Applications

Cerium(III) fluoride uses as high pure chemical reagent and evaporation coating material.

Properties Suppliers
Cerium Hexaboride Industrial Grade 99.9%

Cerium hexaboride is dark gray powder, which is a rare earth boride. It has relatively low work function that is about 2.5 eV, so decide it is cathode material of extremely high electron emissivity. It is also a refractory ceramic material. Cerium boride is stable in vacuum. CeB6 is dense Kondo-like behaviour. It has better resistance to carbon pollution and longer life than lanthanum boride cathode. Its working temperature is 1450℃ usually.  CeB6 like LaB6 will slowly evaporate at working period. Cerium boride is insoluble in water.

Cerium Hexaboride

Purity: Ce/RE 99.9% 3N

Particle size: -20~500mesh

CAS No.:12008-02-5 Molecular Formula:CeBor B6Ce-2 Molecular Weight:204.976 EC Number:234-526-9
Melting Point:2552℃      

Applications

Cerium hexaboride mainly uses for a coating of hot cathodes, or cerium boride crystal makes up hot cathodes directly. CeB6 and LaB6are usually used for some coating of high current hot cathode with heavy current. CeB6 cathode has lower evaporation rate than lanthanum boride below 1700K, but they get to same and even higher evaporation rate at 1850K. It has 50% higher life than LaB6 due that it has better resistance to carbon pollution. The brightness of boride cathode  is 10 times than tungsten cathode and at same time its life is 10-15 times higher than tungsten cathode. Their common uses are electron microscope, microwave tube, electron beam lithography, electron beam welding, X-ray tube and free electron laser.

Properties Suppliers