Ammonium Hydroxide
Ammonia, aqua | ammonium hydroxid | EINECS 215-647-6 | NH3-H2O | NH3 H2O | Caswell No. 044 | agua de amoniaco | Ammonium aqueous (28% or less NH3) | ammonium hydorxide | UN3318 | Ammonia water 29% | Ammonium hydroxide ((NH4)(OH)) | ammonia hydrate | ammon
CAS1336-21-6
Molecular formulaH5NO
Molar mass35.046 g/mol
Hazardous
Physical Description | 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.
Scientific Grain Officer - Dictionary Editorial Department, revised at:2026-10-19
Toxicity
ToxicityEPA Ecotoxicity
Pesticide Ecotoxicity Data from EPA: 3
ICSC Environmental Data
The substance is very toxic to aquatic organisms.
Symptoms
Ingestion Exposure: Sore throat. Vomiting. Abdominal pain.
Toxicity Data
LCLo (human) = 5,000 ppm
Adverse Effects
Toxic Pneumonitis - Inflammation of the lungs induced by inhalation of metal fumes or toxic gases and vapors.
Exposure Routes
The substance can be absorbed into the body by inhalation of its aerosol or vapour and by ingestion.
Toxicity Summary
Cosmetic Ingredient Review Finding(s): Safe for use in cosmetics, with qualifications
Non-Human Toxicity Values
LD50 Rat oral 350 mg/kg
Antidote and Emergency Treatment
Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or in respiratory arrest. Early intubation, at the first signs of upper airway obstruction, may be necessary. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Monitor cardiac rhythm and treat arrhythmias as necessary ... . Start an IV of D5W TKO /SRP: "To keep open", minimal flow rate/. Use lactated Ringer's if signs of hypovolemia are present. Watch for signs of pulmonary edema. For hypotension with signs of hypovolemia, administer fluid cautiously. Watch for signs of fluid overload ... . Consider drug therapy for pulmonary edema ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Inorganic bases/alkaline corro...
