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Colloidal gold nano gold solution CAS 7440-57-5
  • Colloidal gold nano gold solution CAS 7440-57-5

Colloidal gold nano gold solution CAS 7440-57-5

Nano-gold uses high-purity gold as raw material, and the gold is made into a particle size below 15nm through a special new processing technology, which greatly improves the inherent characteristics of gold.
Purity: 1000ppm
Particle Size: 5-15nm
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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

Hot Tags: Colloidal gold nano gold solution CAS 7440-57-5, manufacturers, suppliers, factory, Customized
Technical Parameter of Colloidal Gold Nano Gold Solution:
Product NameMFPurityParticle SizeBulk DensityMelting PointColor
Colloidal GoldAu1000ppm5-15nm1.01 g/cm31064℃Purple
Colloidal Gold Properties
Other Namesgold colloid solution, gold nanodispersion,
gold nanoparticle dispersion
CAS No.7440-57-5
Compound FormulaAu
Molecular Weight196.97
AppearancePurple Liquid
Melting Point1064.43℃
Boiling Point3080℃
Density19.3 g/cm3
Solubility in H2ON/A
Electrical Resistivity2.214 microhm-cm @ 20 °C
   Poisson's Ratio0.44
Tensile StrengthN/A
Thermal Conductivity3.18 W/cm/K @ 298.2 K
Thermal Expansion(25 °C) 14.2 µm·m-1·K-1
Vickers Hardness216 MPa
Young's Modulus79 GPa
Colloidal Gold Health & Safety Information
Signal WordN/A
Hazard StatementsN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
Transport InformationNONH

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Tanki New Materials Co.Ltd Aims to help All industries and Chemical Wholesalers to find high quality, cheap price nano materials and chemicals by providing turn-key customize manufacturing services.

As a trust-worthy global nano-materials and chemicals manufacturer, Tanki New Materials Co.Ltd has been successfully supplying big and small brands with customized nano materials and chemical products in bulk or small quantities.

Tanki New Materials Co.Ltd has rich experiences in the properties, applications, and cost-effective manufacturing of advanced and engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metal, etc.), high-purity targets, functional ceramics, and structural devices. OEM service is available.

Our innovative, high-performance materials are widely used in many industries, including but not limited to the automotive, electrical, electronics, information technology, petrochemical, oil, ceramics, paint, metallurgy, solar energy, and catalysis.

Based in the center of China, the company has rich resources and chemical product manufacuturing chains to make sure your cost remain as low as your specifications demand.

The company provides following products such as providing super high quality chemicals and Nano materials such as graphite powder, boron powder , zinc sulfide , nitride powder, Calcium nitride, Ca3N2, 3D printing powder, and so on.

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