Description

Ammonium Hydroxide is a clear, colorless aqueous solution of ammonia, widely recognized for its strong alkaline properties and distinctive pungent odor. It serves as a fundamental and versatile reagent across numerous industrial and laboratory processes due to its ability to act as a base, a complexing agent, and a source of volatile ammonia. Key industries that rely on this essential chemical include electronics manufacturing, water treatment, pharmaceuticals, and food processing.

Application

• Electronics & Semiconductor Manufacturing: Used as a critical etchant and cleaning agent for silicon wafers and other components.
• Water & Wastewater Treatment: Employed for pH adjustment, chloramine formation for disinfection, and as a source of nitrogen in biological nutrient removal processes.
• Chemical Synthesis & Industry: Acts as a key reagent and catalyst in the production of fertilizers, plastics, synthetic fibers, and other nitrogen-containing compounds.
• Food Processing (FCC Grade): Utilized as a pH control agent, leavening aid, and antimicrobial treatment in accordance with food safety regulations.
• Laboratory & Analytical Chemistry: A standard titrant and buffer component in analytical procedures and qualitative testing.
• Cleaning & Household Products: Found in industrial-strength cleaners and glass polishing formulations for its grease-cutting and streak-free properties.
• Rubber & Leather Processing: Used in the coagulation of latex and in the deliming and tanning stages of leather production.

Basic Information

Product Name	Ammonium Hydroxide
CAS No.	1336-21-6
Molecular Formula	NH4OH / NH3 (aq)
Molecular Weight	35.05 g/mol (as NH4OH)
Synonyms	Aqueous Ammonia; Ammonia Solution; Ammonia Water; Ammonium Hydrate; Spirit of Hartshorn; NH4OH; Ammonia Liquor; Strong Ammonia Solution
EINECS	215-647-6

Quality Control

Our Ammonium Hydroxide is manufactured under strict quality management systems to ensure batch-to-batch consistency and reliability. We offer various grades, including Industrial, Technical, and Food Chemical Codex (FCC) grades, each meeting stringent internal specifications. Quality is verified through comprehensive analytical testing, including assay, heavy metal limits, and non-volatile residue. A Certificate of Analysis (COA) is provided with every shipment to guarantee compliance with your requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials such as strong acids, halogens, and heavy metals. Due to its highly volatile nature, containers must be kept upright and sealed when not in use to prevent ammonia gas release and concentration changes. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	Clear, colorless liquid
Identification (IR)	Conforms
Assay (as NH3)	28.0 - 30.0 %
Non-Volatile Residue	≤ 0.02 %
Chloride (Cl)	≤ 5 ppm
Sulfate (SO4)	≤ 5 ppm
Heavy Metals (as Pb)	≤ 1 ppm
Iron (Fe)	≤ 1 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.