Chromium etchant
ALDRICH/651826 - standard
Synonym: Cr etching solution
MDL Number: MFCD07370678
Product Type: Chemical
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| bp | 100 °C/1 atm |
| color | orange |
| composition | volatiles, 85% |
| density | 1.16 g/mL at 25 °C |
| grade | standard |
| Application: | For use at room temperature or elevated temperature. Etches cleanly, eliminating need for an intermediate rinse. Etching temperature varies with regard to film thickness. Etch times range from 15 to 60 seconds at room temperature. Note, chromium etchants should be handled in a well ventilated hood. |
| Application: | The product can etch Al, Cr, Cu, Ni, GaAs. It can surface oxidize Si, Ta/TaN, however, it has no effect on Au, Si3N4, SiO2, Ti, and W surfaces |
| Features and Benefits: | Designed for precise, clean etching of chromium and chromium oxide films. Compatible with both positive and negative photoresists. Filtered to 0.2 micron to remove particlulates. |
| General description: | • Appearance - Clear orange • pH - Acidic • Etch Rate at 40 °C - 40 Å/second • Etch Capacity (rate declines at ~70%) - 65 g/gallon • Shelf Life - 1 year • Storage Conditions - Ambient • Filtration - 0.2 µm • Recommended Operating Temperatures - 20-80 °C (30-40 °C most common) • Rinse - Deionized water • Photoresist Recommendations - KLT6000 Series, KLT 5300 Series, HARE SQT (SU-8 type), TRANSIST, or PKP -308PI • Select Compatible Materials - Au, Ti, oxide, nitride, Si • Select Incompatible Materials - Al, Ni, Cu, NiCr • Compatible Plastics - HDPE, PP, PTFE, PFA, PVC • Isotropy - Isotropic • Incompatible Chemicals - Strong bases |
| General description: | Ceric ammonium nitrate-based etchant. Etch rate of 40 Å/sec @ room temp. Etches cleanly with only a deionized water rinse needed. |
| General description: | Chromium etchant is a chromium based solution that removes the excess metal from the substrate. These etchants are majorly used in metal finishing and electronic industry. It has an etch rate of 4 mm/s and can be used to etch nickel, copper, and chromium based excess metals. |
| General description: | Our chromium etchant is high purity ceric ammonium nitrate system for precise, clean etching of chromium and chromium oxide films. Compatible with positive and negative photoresists. Our chromium etchant is filtered to remove all particulates above 0.2 microns. Etching temperature varies depending on film thickness. Etch times range from 15 seconds to 60 seconds at room temperature. Chromium Etchants should be operated in a well-ventilated hood. |
| Packaging: | 500 mL in poly bottle |
| Symbol |     GHS03,GHS05,GHS07,GHS09 |
| Signal word | Danger |
| Hazard statements | H272 - H290 - H314 - H317 - H411 |
| Precautionary statements | P210 - P220 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | O,C,N |
| Risk Statements | 8-34-43-51/53 |
| Safety Statements | 17-26-36/37/39-45-57-60 |
| RIDADR | UN 3093 5.1(8) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH071 |
| bp | 100 °C/1 atm |
| Density | 1.16 g/mL at 25 °C |
| UNSPSC | 12352300 |