Colloidal gold nano gold solution CAS 7440-57-5

Overview of colloidal gold nano gold solution:

The colloidal gold nano-gold solution uses high-purity gold as the raw material, and through a special new processing technology, the gold particle size is below 15nm, which greatly improves the inherent characteristics of gold catalysis, free radical scavenging, and dispersion.

Gold, that is, gold, the chemical element symbol is gold, which has the characteristics of high safety, high stability, oxidation resistance, and corrosion resistance.

Gold is one of the rarest and most precious metals. It has a face-centered cubic structure with an atomic weight of 196.9654.

Melting point: 1064.43°C, boiling point: 2808°C, electronegativity: 2.54, covalent radius: 1.34A, ionic radius: 0.85(+3)A, atomic radius: 1.46A, atomic volume: 10.2cc/mol.

Gold can form alloys with many metals because the atomic radii of these metals are very close to the atomic radii of gold; therefore, the atomic radii of gold and gold are very close. The atomic radius of gold is 1.46 angstroms; Mr. Bi is 1.46; Mr. Silver is 1.44; A. Platinum 1.39 Mr.Thus, gold can be formed in alloys of gold and silver, gold and copper, gold and platinum. These alloys are not compounds, but solid melts.

Colloidal gold is prepared by dispersing gold nanoparticles of 15 nm or smaller in an aqueous solution. The formulation will finally obtain a uniform neutral solution with stable color. The nano-gold solution looks reddish rather than golden brown. When it is concentrated by adding other substances, the gold liquid looks like lapis lazuli. The solution is edible for humans and is completely safe in contact with the skin. 

The steps for preparing gold nanoparticles are as follows:

1) Add chloroauric acid to deionized water, and add polyvinylpyrrolidone, sodium lauryl sulfate, lauryl chloride, polyvinylpyrrolidone, and sodium lauryl sulfate at a mass concentration of 0.01~1.0%, 0.02~2.0. % And 0.0001~1.0%;

2) At room temperature, add 0.01~0.5% hydrazine hydrate aqueous solution to the mixed solution of step 1) under stirring. When the pH value reaches 6.8 to 7.0, stop adding the hydrazine hydrate aqueous solution, and continue to stir for 20 to 30 minutes to obtain a gold nano-level solution. The advantages of the preparation method are as follows: the preparation is carried out at room temperature, the process is simple, the particle size of the gold nanoparticles in the solution is 10-100 nm, the gold particles are small, and they are not easy to precipitate.

Application of colloidal gold nano gold solution:

The unique biochemical and physical and chemical properties of gold nanoparticles make them play a unique role in immune analysis, biosensors, DNA recognition and detection, genes, and many other aspects. Gold nanorods have a strong adsorption function for proteins and DNA, and will not change the properties of the adsorbed substances. As a carrier with excellent properties, gold nanorods have also been extensively studied.

Nano gold is used as a colorant for food, glass and biology.

Nano gold is used as a gene identification technology.

Nano gold is used to refine environmental purification products.

Nano gold is used as a preservative for food and cosmetics.

Nano gold added to cosmetics can play a role in whitening, anti-aging and moisturizing.

Production of antibacterial, antibacterial, anti-inflammatory drugs, medical equipment, health care products, beauty care equipment.

We produce all kinds of daily necessities, food, and beverages that are closely related to people's lives. Such as nano-gold soap, toothbrushes, various facial masks for beauty.

Colloidal gold nano gold solution price:

The price of the colloidal gold nano-gold solution varies randomly with production costs, transportation costs, international conditions, exchange rates, and the market supply and demand of the colloidal gold nano-gold solution. Tanki New Materials Co.,Ltd aims to help all industries and chemical wholesalers find high-quality products by providing a full range of products. If you are looking for a colloidal gold nano gold solution, please contact us for the latest price of the colloidal gold nano-gold solution.

Colloidal gold nano gold solution supplier:

As a global supplier of colloidal gold nano-gold solutions, Tanki New Materials Co.,Ltd. Has extensive experience in the performance, application, and cost-effective manufacturing of advanced and engineering materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, and functional materials. Ceramics and structural equipment, and provide OEM services