Gold Nanoparticles reactant free - 40nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline, 530nm abs. max. , CAS No.7440-57-5

CAS: 7440-57-5 Cat. No.: G359159 Formula: Au Molecular Weight: 196.97 EC Number: 231-165-9 PubChem CID: 23985
AVAILABLE TO ORDER
GRADE & PURITY 40nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline, 530nm abs. max.
Synonyms
7440-57-5|Au|Gold|Colloidal gold|Gold powder|Gold flake|Gold leaf|Gold, colloidal|Aurum Metallicum|Gold, elemental|HSDB 2125|Gold foil|Gold wire|CI 77480|EINECS 231-165-9|Gold-197|UNII-79Y1949PYO|auride(1-)|gold(0)|79Y1949PYO|C.I. 77480|Gold (e 175)|Au(0)
Storage
Store at 2-8°C
Shipped In
Wet ice
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Size
USA
Germany (EU)*
Price
Qty
25ml
G359159-25ml
Made to order · 8–12 wks
$453.90
100ml
G359159-100ml
Made to order · 8–12 wks
$1,586.90
Enter a quantity for the sizes you want to add.
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Why this grade

40nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline, 530nm abs. max. for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

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Storage & shipping

Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

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Literature proof

Cited in 28 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
7440-57-5 | Au | Gold | Colloidal gold | Gold powder | Gold flake | Gold leaf | Gold, colloidal | Aurum Metallicum | Gold, elemental | HSDB 2125 | Gold foil | Gold wire | CI 77480 | EINECS 231-165-9 | Gold-197 | UNII-79Y1949PYO | auride(1-) | gold(0) | 79Y1949PYO | C.I. 77480 | Gold (e 175) | Au(0)
Specifications & Purity
40nm diameter, 1 OD, stabilized suspension in phosphate-buffered saline, 530nm abs. max.
Legal Information
Spherical Gold Nanoparticles Kit component
Storage
Store at 2-8°C
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Names and Identifiers
Canonical Smiles[Au]
IUPAC Namegold
InChIKeyPCHJSUWPFVWCPO-UHFFFAOYSA-N
INCHI1S/Au
Isomeric SMILES [Au]
PubChem CID 23985
Molecular Weight 196.97

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

Download SDS →

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomInorganic compounds
SuperclassHomogeneous metal compounds
ClassHomogeneous transition metal compounds
SubclassNot available
Intermediate Tree Nodes Not available
Direct ParentHomogeneous transition metal compounds
Alternative Parents Not available
Molecular FrameworkNot available
Substituents Homogeneous transition metal
DescriptionThis 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
3D Structure
Interactive Chemical Structure Model





Certificates(CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:
Chemical and Physical Properties
Boil Point(°C)2808°C
Melt Point(°C)1063°C
Molecular Weight196.966 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count0
Rotatable Bond Count0
Exact Mass196.967 Da
Monoisotopic Mass196.967 Da
Topological Polar Surface Area0.000 Ų
Heavy Atom Count1
Formal Charge0
Complexity0.000
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count1
Documents & Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

Frequently Asked Questions

How should this product be stored?
Store at 2–8 °C. Refrigerated storage is required to maintain the specified shelf life.
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.

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