NH4OH ammonium hydroxide (aqueous ammonia)

This Ammonium Hydroxide is commonly used by metal artists in several patina formulas. It contains 28 to 30% ammonia by weight and is a colorless liquid with a strong odor. Use caution – liquid, and vapor are extremely irritating, especially to the eyes.

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Description

Ammonia solution, also known as ammonium hydroxide, ammonia water, ammonical liquor, ammonia liquor, aqua ammonia, aqueous ammonia, or simply ammonia, is a solution of ammonia in water.