Particle size: 20nm, solvent: ultrapure water, OD: ＞0.75 for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C,Protected from light Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 1 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
Product description
Ingredients: gold nanoparticles modified with sodium citrate, ultrapure water
Properties: aqueous solution, burgundy in color.
Features: uniform size, easy surface functionalization: various functionalized molecules such as functionalized PEG, PEI, PEG-FITC, PEG-FA (folic acid), poly(amino acids),biotin, lysozyme, chitosan, cyclodextrin, Raman probe molecules, drug molecules, etc., can be modified as needed. It is safe and environmental friendly without pollution, good dispersibility and stability. Colloidal gold is negatively charged in a weak alkaline environment and can form a solid bond with the positively charged groups of protein molecules, which does not affect the biological properties of proteins because the bond is electrostatic. Colloidal gold can be combined with many other biological macromolecules besides protein, such as SPA, PHA, ConA and so on. According to some physical properties of colloidal gold, such as high electron density, particle size, shape and color reaction, together with the immunological and biological characteristics of the bond, thus making colloidal gold widely used in immunology, histology, pathology and cell biology and other fields, such as highly sensitive detection based on colloidal gold agglutination effect, surface-enhanced Raman, protein coupling, etc.
TEMimage
UV-vis absorption spectra
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 F2615396 | Certificate of Analysis | Jun 05, 2026 | G419239 |
| J2326391 | Certificate of Analysis | Apr 07, 2026 | G419239 |
| L2529275 | Certificate of Analysis | Apr 02, 2026 | G419239 |
| H2525638 | Certificate of Analysis | Dec 10, 2025 | G419239 |
| E2515316 | Certificate of Analysis | Oct 30, 2025 | G419239 |
| K2422452 | Certificate of Analysis | Mar 04, 2025 | G419239 |
| B2322881 | Certificate of Analysis | Feb 13, 2023 | G419239 |
| I2223459 | Certificate of Analysis | Sep 16, 2022 | G419239 |
| 1. Binbin Chu, Zhiming Chen, Xiaofeng Wu, Haoliang Shi, Xiangbowen Jin, Bin Song, Mingyue Cui, Yadan Zhao, Yingying Zhao, Yao He, Houyu Wang, Fenglin Dong. (2024) Photoactivated Gas-Generating Nanocontrast Agents for Long-Term Ultrasonic Imaging-Guided Combined Therapy of Tumors. ACS Nano, [PMID:38847586] [10.1021/acsnano.4c01041] |
