Gold etchant, standard
ALDRICH/651818
Synonym: Antistrumin; Potassium monoiodide
CAS Number: 7681-11-0
MDL Number: MFCD07370792
Product Type: Chemical
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| bp | 100 °C (lit.) |
| 100 °C/1 atm | |
| composition | volatiles, 50-80% |
| density | 1.2924 g/mL at 25 °C (lit.) |
| InChI | 1S/HI.K/h1H;/q;+1/p-1 |
| InChI key | NLKNQRATVPKPDG-UHFFFAOYSA |
| solubility | H2O: miscible |
| 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. |
| General description: | Etching readily controlled with minimum undercutting. Room temperature operated. Cyanide-free for standard applications. Etch rate of 28 angstrom/sec @ 25 °C. |
| General description: | Gold etchant is a combination of potassium iodide and iodine as complexing agents synthesized by electrochemically oxidizing gold. |
| Packaging: | 500 mL in poly bottle |
| Symbol |  GHS08 |
| Signal word | Danger |
| Hazard statements | H372 |
| Precautionary statements | P260 - P264 - P270 - P314 - P501 |
| Hazard Codes | Xn |
| Risk Statements | 22-36/38 |
| Safety Statements | 26 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| bp | 100 °C (lit.); 100 °C/1 atm |
| Density | 1.2924 g/mL at 25 °C (lit.) |
| UNSPSC | 12352302 |