Chemical Properties:
Package: 25kg/Drum, or according to customer's requirement. Storage Condition: Store in sealed containers at cool and dry place; Protect from light and moisture.Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of Tetramethylammonium Hydroxide (TMAH) (CAS: 75-59-2) with high quality, commercial production. We can provide Certificate of Analysis (COA), Safety Data Sheet (SDS), worldwide delivery, small and bulk quantities available, strong after-sale service. Welcome to order. Please contact: alvin@ruifuchem.com| Item | Specifications |
| Appearance | Colorless Liquid |
| Assay | 24.5~25.5% (Assay by Titration) |
| Chloride | <500ppm |
| Potassium (K) | <5ppm |
| Sodium (Na) | <5ppm |
| Color | <50APHA |
| Test Standard | Enterprise Standard |
| Usage | for Photoresist Research |
Description:
Specifications:
Package & Storage:
| Chemical Name | Tetramethylammonium Hydroxide (25% Aqueous Solution) |
| Synonyms | TMAH (25% Aqueous Solution) |
| CAS Number | 75-59-2 |
| CAT Number | RF-PI1749 |
| Stock Status | In Stock, Production Scale Up to Tons |
| Molecular Formula | (CH3)4NOH |
| Molecular Weight | 91.15 |
| Refractive Index (N20/D) | 1.378~1.384 |
| Odor | Strong Ammonia-Like Odor |
| Hazard Warning | Highly Toxic! Flammable Liquid! |
| Brand | Ruifu Chemical |
Advantages:
FAQ:
Application:
Tetramethylammonium Hydroxide (TMAH) (CAS: 75-59-2) is a quaternary ammonium salt generally used as an anisotropic etchant for silicon due to its high silicon etching rate, basic solvent in the development of acidic photoresist in photolithography process, as surfactant in the synthesis of ferrofluid and as a polarographic reagent. It finds application in the production of organic silicon, where it is used for computer silicon wafer surface brightener and cleaning agent. It is also involved in the purification of some metallic elements.
