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Holmium Oxide Purified 99.9%

Holmium oxide is faint yellow or yellow powder, which is isometric system scandium oxide type structure. It is rare earth oxide, which is insoluble in water, but not soluble in acid. Ho2O3 is insoluble in water, but soluble in acid, which is stable at room temperature and pressure.

Holmium Oxide

CAS No.:12055-62-8 EINECS No.:235-015-3 Molecular Formula:Ho2O3 Molecular Weight:377.86
Density:8.16 Melting Point:2415℃ Boiling Point:3900℃  


Holmium(III) oxide mainly applies to make new light source Dysprosium Holmium lamp. It is also additive for yttrium iron or yttrium aluminum garnet and raw material for holmium metal.

Holmium trioxide acts as magnetic material and new electric light source.

Norethisterone LAB GRADE 97%

Alfa Chemistry offers an extensive catalog of building blocks, reagents, catalysts, reference materials, and research chemicals in a wide range of applications. We supply Norethisterone (cas no:68-22-4). More information please visit the website:

Ofloxacin D8 Hydrochloride

Labeled Ofloxacin, intended for use as an internal standard for the quantification of Ofloxacin by GC- or LC-mass spectrometry.

Potassium Hydrogen Glucarate

Potassium hydrogen glucarate is a compound formed from oxidizing sugars, which can be used to test for the presence of hepatic enzyme induction.

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Potassium Hydrogen Phthalate

Potassium hydrogen phthalate is an acidic salt compound. It is the monopotassium salt of phthalic acid. The hydrogen is slightly acidic, and it is often used as a primary standard for acid-base titrations because it is solid and air-stable, making it easy to weigh accurately. It is not hygroscopic. It is also used as a primary standard for calibrating pH meters because, besides the properties just mentioned, its pH in solution is very stable. It can be used as a buffering agent but should not be used as a buffer for decarboxylation reactions, as these will degrade the KHP and mop up the conjugation groups. It is also a useful standard for total organic carbon (TOC) testing. Most TOC analyzers are based on the oxidation of organics to carbon dioxide and water, with subsequent quantitation of the carbon dioxide.

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Terbium Metal Purified 99.9%

Terbium metal is silver gray metal, which is a kind of rare earth metal. There are two production method, distillation and reduction. Distilled terbium is dendritic with metal luster. Reduced terbium is dark gray without metal luster. Distillation method get higher purity than reduction method. It tend to corrode by air when heating, but extremely slow at room temperature.  Its main compounds include terbium trioxideterbium dioxideterbium fluorideterbium chloride and other terbium(IV) salts. Terbium can process into foil, sheet, wire, rod, powder and sputtering target. Tb ingot is of REM 99.99% by reduction method and distillation method. The distilled terbium piece is dendritic with higher purity than reduced Tb. Tb powder is of REM 99.9% and particle size -100mesh and -200mesh.

Terbium Metal

Purity: Tb/REM 99.99% 4N

CAS No.: 7440-27-9 EINECS No.: 231-137-6 Molecular Formula: Tb Molecular Weight: 158.925
Melting Point:1356℃ Boiling Point:3230℃ Density:8.27  


Distilled terbium metal apply to make high-temperature fuel cell and laser material. Calcium fluoride, calcium tungstate, strontium molybdate doped with terbium can apply to make solid state device.

Terbium magneto-optic material has bulk production, which is a kind of magneto-optic storage material. Magneto-optic disc of Tb-Fe non-crystal film can be as computer memory element, which increase storage by 10-15times.

Faraday rotatory glass containing terbium is key material in processing rotator, isolator and circulator that widely used in laser technology. Especially TerFenol. Terfenol is new material that found in 70s. Half of the alloy are terbium and dysprosium. Sometime adding holmium. The balance is iron. Tb-Dy-Ir mainly apply to sonar initially, but now it gets more and more applications as fuel injection system, liquid valve control, wing adjuster, special loudspeaker and so on.

Terbium metal can apply to do nondestructive inspection for welding spot of ships and pipeline.

Tetraethylammonium Hydroxide

Tetraethylammonium hydroxide is used as a phase transfer catalyst for electronic industy.

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Thulium Metal Purified 99.9%

thulium metal piece ingot wire foil

rare earth metal

Tm REM 99.9%

sputtering target

rare earth compounds, phopshor activating agent

x ray source

Thulium Oxide Purified 99.9%

Thulium oxide is white powder with slightly green color, which turns into red with lustre after heating and it turns into yellowish white again if longer heating. It is rare earth oxide. It is insoluble in water, but dissolve in strong acid slowly. Tm3O3 absorb CO2 and H2O in air to form subcarbonate salts.

Thulium Oxide

CAS No.:12036-44-1 EINECS No.:234-851-6 Molecular Formula: Tm2O3 Molecular Weight:385.87
Density:8.5 Melting Point:2341℃ Boiling Point:3945℃  


Thulium(III) oxide mainly applies to make portable X-ray transmission device. It acts as control material in reactor.

Thulium trioxide is raw material for X-ray luminescent materials, garnet laser material, rare earth glass laser material and magnetic bubble.

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