Metal materials

Nonferrous metal, Rare metals, Rare And Noble Metal, Metal powder.

Nano materials

Nanometer TiO2 Series, Nanometer SiO2 Series,Nanopowder,Graphene.


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Production of tin nanometric powders by hydrogen DC claret arc evaporation.

About us

Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997.


Yttrium oxide for sale.

Silver nitrate uses.

Gerhold Chemetals Co., Ltd.

  Gerhold Chemetals Co., Ltd is a German company founded both in Germany and China in 1997, focuses on research and development of Metallic powders, Metal Compounds nano powders. We can customize products according to customers’ special requirements.

  Our technologies are from Elektrotechnik University, Aachen University, München University and Beijing University.


 The advantages of our products:

   1. Uniform particle size 
   2. invariant Shape
   3. High purity, reach 99.999999
   4. Good dispersion


  In worldwide market, Gerhold Chemetals has sold products to more than 50 countries. We will keep on developing and enlarging business by our advantages.

Properties and uses of magnesium hydrogen phosphate

Submitted by admin on Fri, 11/23/2018 - 08:54

Magnesium hydrogen phosphate mainly has three hydrates of anhydrous, trihydrate and heptahydrate, colorless or white orthorhombic crystal or powder; slightly soluble in water, soluble in dilute acid, insoluble in ethanol, relative density 2.013; heated to 205 At ° C, one molecule of crystal water was removed. It is decomposed into pyrophosphate when heated to 550-650 °C. Magnesium hydrogen Hydroxide heptahydrate was heated to 110 ° C to form magnesium hydrogen phosphate trihydrate, and magnesium hydrogen phosphate trihydrate was heated to 205 ° C to remove 1 crystal water.

Use of magnesium oxide

Submitted by admin on Wed, 11/21/2018 - 07:54

Magnesium oxide is commonly known as bitter soil, also known as magnesium oxide. Magnesium oxide is a basic oxide and has the property of a basic oxide. It is a gelling material. White powder (light yellow is magnesium nitride), odorless, tasteless, non-toxic, is a typical alkaline earth metal oxide, chemical formula MgO. A white powder having a melting point of 2852 ° C, a boiling point of 3600 ° C and a relative density of 3.58 (25 ° C).

Range of magnesium oxide product

Submitted by admin on Wed, 11/21/2018 - 07:47

Magnesium oxide is divided into light magnesium oxide and heavy magnesium oxide. Lightweight and loose, white amorphous powder. Odorless, tasteless and non-toxic. The density is 3.58 g/cm3. Hard to dissolve in pure water and organic solvents, the solubility in water increases due to the presence of carbon dioxide. Soluble in acid, ammonium salt solution. It is converted into crystals by high temperature burning. In the case of carbon dioxide in the air, it forms a double salt of magnesium carbonate.

Related information about Magnesium gluconate

Submitted by admin on Tue, 11/20/2018 - 09:37

Magnesium gluconate (chemical formula: MgC12H22O14) is a magnesium salt of gluconic acid. White or grayish white odorless fine powder. Dissolved in water. It is obtained by dissolving magnesium oxide or magnesium carbonate in gluconic acid. Used as a nutritional supplement, buffer, curing agent, etc.

Pharmacological action
Oral administration of this product can increase the blood magnesium concentration and maintain the blood magnesium concentration after intravenous magnesium sulfate, for the treatment of pregnancy-induced hypertension syndrome.

Use of magnesium stearate

Submitted by admin on Tue, 11/20/2018 - 09:23

Magnesium stearate is a white fine powder with no sand; it has a slight odor; it has a slippery feel when it comes into contact with the skin. This product is insoluble in water, ethanol or ether, and is mainly used as a lubricant, anti-adhesive agent and glidant. It is especially suitable for granulation of oils and extracts, and the prepared granules have good fluidity and compressibility. Used as a flow aid in direct compression.