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651818

Gold etchant, standard

Name: Gold etchant, standard
Brand: ALDRICH

Synonym(s):

Antistrumin, Potassium monoiodide

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About This Item

CAS Number:

7681-11-0

UNSPSC Code:

12352302

NACRES:

NA.23

MDL number:

MFCD07370792

Solubility:

H₂O: miscible

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Properties

composition

volatiles, 50-80%

Quality Level

100

bp

100 °C (lit.), 100 °C/1 atm

solubility

H₂O: miscible

density

1.2924 g/mL at 25 °C (lit.)

SMILES string

[K+].[I-]

InChI

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

InChI key

NLKNQRATVPKPDG-UHFFFAOYSA-M

Description

General description

Gold etchant is a combination of potassium iodide and iodine as complexing agents synthesized by electrochemically oxidizing gold.

Etching readily controlled with minimum undercutting. Room temperature operated. Cyanide-free for standard applications. Etch rate of 28 angstrom/sec @ 25 °C.

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 and metal layer for the preparation of nanoelectrodes array. Gold etchant can also be used in metal assisted chemical etching (MACE) for the fabrication of p-n junction silicon nanopillar based solar cells.

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Danger

target_organs

Thyroid

Storage Class

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

ppe

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

Hazard Classifications

Eye Irrit. 2 - Repr. 1B - STOT RE 2

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

651818-500ML:4.548173953427E12

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Protocols

Negative Photoresist Procedure

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

ネガ型フォトレジストキットの取り扱い方法

本フォトレジストキットには、リソグラフィープロセスにおける各ステップで必要な材料が含まれています。各材料は、すぐにお使いいただけるようにあらかじめ計量されており、エッチング液については、様々な基板に適切なものをお選びいただけるように、個別に販売しています。