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651818

Sigma-Aldrich

Gold etchant, standard

Synonyme(s) :

Antistrumin, Potassium monoiodide

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500 ML
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500 ML
134.00 CHF

About This Item

Numéro CAS:
7681-11-0
Numéro MDL:
MFCD07370792
Code UNSPSC :
12352302
Nomenclature NACRES :
NA.23

134.00 CHF

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Devis pour commande en gros

Composition

volatiles, 50-80%

Niveau de qualité

100

pb

100 °C (lit.)
100 °C/1 atm

Solubilité

H2O: miscible

Densité

1.2924 g/mL at 25 °C (lit.)

Chaîne SMILES 

[K+].[I-]

InChI

1S/HI.K/h1H;/q;+1/p-1

Clé InChI

NLKNQRATVPKPDG-UHFFFAOYSA-M

Catégories apparentées

Description générale

Etching readily controlled with minimum undercutting. Room temperature operated. Cyanide-free for standard applications. Etch rate of 28 angstrom/sec @ 25 °C.
Gold etchant is a combination of potassium iodide and iodine as complexing agents synthesized by electrochemically oxidizing gold.[1]

Application

Gold etchant is a selective general-purpose etchant for gold, compatible with negative and positive photoresists. It is used to etch out gold (Au) electrodes prior to scanning electron microscopy (SEM) imaging for morphological study[2] and metal layer for the preparation of nanoelectrodes array.[3] Gold etchant can also be used in metal assisted chemical etching (MACE) for the fabrication of p-n junction silicon nanopillar based solar cells.[4]

Pictogrammes

Health hazard
GHS08

Mention d'avertissement

Danger

Mentions de danger

H372

Classification des risques

STOT RE 1 Oral

Organes cibles

Thyroid

Code de la classe de stockage

6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)

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Certificats d'analyse (COA)

Lot/Batch Number
MKCV5982
MKCW9292
MKCT0684
MKCT6170
MKCR5081

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Consulter la Bibliothèque de documents

Scalable long-term extraction of photosynthetic electrons by simple sandwiching of nanoelectrode array with densely-packed algal cell film.
Kim J et al.
Biosensors And Bioelectronics, 117(10), 15-22 (2018)
High performance nanopillars array silicon solar cells.
Design, Test, Integration and Packaging of MEMS/MOEMS (DTIP), 117(10), 1-5 (2013)
A two-step annealing process for enhancing the ferroelectric properties of poly (vinylidene fluoride)(PVDF) devices.
Park H, et al.
Journal of Material Chemistry C, 3(10), 2366-2370 (2015)
Cyanide-and thiourea-free electrochemical etching of gold for microelectronics applications.
Hu Z and Ritzdorf T
Journal of the Electrochemical Society, 154(10), D543-D549 (2007)
Abhinav Sharma et al.
Scientific reports, 9(1), 5970-5970 (2019-04-14)
Cardiac troponin T (cTnT) is considered a clinical standard for its high specificity and sensitivity when diagnosing acute myocardial infarction; however, most studies on the electrical sensors of cardiac troponin biomarkers have focused on cTnI rather than cTnT. This study
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Protocoles

Negative Photoresist Procedure

Photoresist kit offers pre-weighed chemical components for lithographic processes, with separate etchants for various substrate choices.

Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  3. Does this Au etchant etch GaAs? We bought this one for Silicon but not sure whether it works for GaAs

    1 answer

    1. Yes, Product 651818 etches GaAs.

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