Description

Murakami’s reagent (AKA Murakami’s etch) is an etchant for Cr, Mo, Re, Ta-Mo, W, V, tungsten carbide (WC) and other sintered carbides. It can also be used as a color etchant of stainless steels. This etchant is listed in ASTM standard E 407 as No. 98 Murakami’s. It has two parts and has to be mixed fresh before use. Made with ACS reagent grade chemicals.

Part A: potassium ferricyanide, 50 g
Part B: sodium hydroxide solution, 500 ml

User Instructions:

• Please note that potassium ferricyanide (Part A) is not a hazardous chemical; however, if it is exposed to acids (e.g., hydrochloric acid), it can give off the extremely poisonous hydrogen cyanide gas!
• Use a fume hood and wear protective gear. The mixture is poisonous by ingestion as well as contact.
• Dissolve 10 g of part A in 100 ml of part B under a fume hood and use the mixture under the hood.
• Immerse or swab the sample few seconds to a minute. Follow with a water rinse, alcohol rinse, and dry.
• Use fresh.

Packaging:

Nalgene® Leakproof Bottles, HDPE.