Gold nanoparticles - 5 nm diameter, OD 1, stabilized suspension in 0.1 mM PBS, reactant free , CAS No.7440-57-5

CAS: 7440-57-5 Cat. No.: G486088 Formula: Au Molecular Weight: 196.97 EC Number: 231-165-9 PubChem CID: 23985

GRADE & PURITY 5 nm diameter, OD 1, stabilized suspension in 0.1 mM PBS, reactant free

Synonyms

CI 77480 | Gold Dispersion | Gold, foil, thickness 0.025 mm, size 50 x 50 mm, purity 99.95% | UNII-79Y1949PYO | gold atom | Gold flake | Gold, wire, 0.025 mm diameter, length 10 m, purity 99.99+% | Gold, elemental | Gold, foil, thickness 0.015 mm, size 50

Storage

Store at 2-8°C,Protected from light

Shipped In

Wet ice

Overview

Composition: Tannic acid stabilized gold colloid
Core Size: 5nm
Absorption max: 515-520nm
Particles per ml: 5.47E+13

Purity: >99.0% reactant free

Intended use: Our extensively purified reactant free gold nanoparticles are ideal for sensitive applications requiring a minimum amount of contaminating reactants remnant from the manufacturing process. This product is well suited for conjugate development by passive adsorption of proteins and other ligands to the gold nanoparticle surface. The resulting conjugate can be used in blotting, electron microscopy and immunohistochemistry applications.

Properties

reactant free gold nanoparticles are made using a unique proprietary protocol resulting in pure, reactant free particles with superior size distribution and shape compared to that of the leading competitor.

Our gold nanoparticle preparations have a narrow size distribution (CV of less than 15%), exceptional protein adsorption properties and more than 95% spherical particles. In addition, low batch to batch variability (+/- 2nm) assures you as a customer always end up with a product within the specified size range ordered. 

All of our batches go through stringent quality control prior to shipment to our customers using dynamic light scattering to guarantee size and monodispersity and lot specifications are supplied with each product.

Storage
Store product away from direct sunlight at 4-25°C. Lower temperature prolongs the shelf life of the product. 
Do NOT freeze. Freezing causes irreversible aggregation of the gold nanoparticles. 
When stored as specified the product is stable for at least six months.

Product Data

Specifications

Synonyms

CI 77480 | Gold Dispersion | Gold, foil, thickness 0.025 mm, size 50 x 50 mm, purity 99.95% | UNII-79Y1949PYO | gold atom | Gold flake | Gold, wire, 0.025 mm diameter, length 10 m, purity 99.99+% | Gold, elemental | Gold, foil, thickness 0.015 mm, size 50

Specifications & Purity

5 nm diameter, OD 1, stabilized suspension in 0.1 mM PBS, reactant free

Storage

Store at 2-8°C,Protected from light

Shipped In

Wet ice

This product requires cold chain shipping. Ground and other economy services are not available.

Names and Identifiers

Pubchem Sid

504753159

Pubchem Sid Url

https://pubchem.ncbi.nlm.nih.gov/substance/504753159

Canonical Smiles

[Au]

IUPAC Name

gold

InChIKey

PCHJSUWPFVWCPO-UHFFFAOYSA-N

INCHI

1S/Au

Isomeric SMILES

[Au]

PubChem CID

23985

Molecular Weight

196.97

Taxonomic Classification

Taxonomy Tree

• Kingdom Inorganic compounds
  • Superclass Homogeneous metal compounds
    • Class Homogeneous transition metal compounds

• Kingdom: Inorganic compounds
• Superclass: Homogeneous metal compounds
• Class: Homogeneous transition metal compounds
• Subclass: Not available
• Intermediate Tree Nodes: Not available
• Direct Parent: Homogeneous transition metal compounds
• Alternative Parents: Not available
• Molecular Framework: Not available
• Substituents: Homogeneous transition metal
• Description: This compound belongs to the class of inorganic compounds known as homogeneous transition metal compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a transition metal atom.
• External Descriptors: elemental gold

Data sources

1. Djoumbou Feunang Y, Eisner R, Knox C, Chepelev L, Hastings J, Owen G, Fahy E, Steinbeck C, Subramanian S, Bolton E, Greiner R, and Wishart DS. ClassyFire: Automated Chemical Classification With A Comprehensive, Computable Taxonomy. Journal of Cheminformatics, 2016, 8:61.

DOI: 10.1186/s13321-016-0174-y

Chemical and Physical Properties

• Sensitivity: Light sensitive
• Boil Point(°C): 2808°C
• Melt Point(°C): 1063°C
• Molecular Weight: 196.966 g/mol
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 196.967 Da
• Monoisotopic Mass: 196.967 Da
• Topological Polar Surface Area: 0.000 Ų
• Heavy Atom Count: 1
• Formal Charge: 0
• Complexity: 0.000
• Isotope Atom Count: 0
• Defined Atom Stereocenter Count: 0
• Undefined Atom Stereocenter Count: 0
• Defined Bond Stereocenter Count: 0
• Undefined Bond Stereocenter Count: 0
• The total count of all stereochemical bonds: 0
• Covalently-Bonded Unit Count: 1

XLogP3

Frequently Asked Questions

How should this product be stored?

Store at 2–8 °C, protected from light. The material is light-sensitive — keep it in its original opaque or amber container.

How is this product shipped?

This product ships chilled on wet ice. Unpack on arrival and transfer it to the storage condition stated above.

What are the CAS number, molecular formula and molecular weight?

The CAS Number is 7440-57-5, the molecular formula is Au, and the molecular weight is 196.97 g/mol. InChIKey PCHJSUWPFVWCPO-UHFFFAOYSA-N.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.