Ammonium hydroxide
CAS 1336-21-6H5NO35.046 g/mol
Ammonium hydroxide is a solution of ammonia in water. It has a role as a food acidity regulator.
IUPAC: azanium hydroxide
PubChem
Physical & Chemical Properties
| Melting Point | -58 °C (25%) |
| Boiling Point | 38 °C (25%) |
| Density | About 0.90 @ 25 °C/25 °C |
| Solubility | Exists only in solution |
| Vapor Pressure | 2160 mm Hg @ 25 °C |
| pH | pH= 11.6 (1.0 N solution); 11.1 (0.1 N solution); 10.6 (0.01 N solution) |
| Appearance | Ammonium hydroxide appears as a colorless aqueous solution. Concentration of ammonia ranges up to approximately 30%. Ammonia vapors (which arise from the solution) irritate the eyes. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2814
Data: UN Comtrade
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