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Ammonium hydroxide solution

28% NH3 in H2O, ≥99.99% trace metals basis

Ammonia aqueous, Ammonia water
Linear Formula:
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥99.99% trace metals basis



expl. lim.

27 %


28% NH3 in H2O


11.7 (20 °C)


0.9 g/mL at 25 °C (lit.)
0.9 g/mL at 25 °C

storage temp.


SMILES string




InChI key


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Hazard Classifications

Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Skin Corr. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Certificate of Analysis

Certificate of Origin

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