- Ammonium Hydroxide, NH4OH, is formed when ammonia (NH3) is dissolved in water. Ammonia deprotonates a small portion of water molecules leaving the free hydroxide ion, [OH]-, to form a slightly basic solution. The resulting solution is clear, colorless, with a pungent odor and vapors that may irritate the eyes.Ammonium Hydroxide is a weak base mainly used to prepare other ammonium compounds like urea, ammonium carbonate and ammonium sulfate.Lab Alley’s high-quality Ammonium Hydroxide, ACS Reagent Grade, 28-30% has been certified as an ACS Grade reagent by the American Chemical Society (ACS). The reagent grade is generally equivalent to the ACS grade and is acceptable for use in analytical applications and research laboratories.
This 28 to 30 percent ammonium hydroxide solution is ammonia gas dissolved in water. The CAS number is 1336-21-6, and the assay runs from 28.0 to 30.0 percent. It’s a clear, colorless liquid with a pungent odor, and the vapors may irritate your eyes. Chemically, it’s a weak base, mainly used to make other ammonium compounds like urea, ammonium carbonate and ammonium sulfate. This ACS Grade product is acceptable for analytical applications and research laboratories. Lab Alley lists the Safety Data Sheet and Technical Data Sheet in the Product Manuals tab, along with allergen, BPA, PFAS/PFOS free, TSE/BSE and non irradiation statements and a manufacturing process flow chart. Certificates of Analysis are posted by lot.
You’ll find this solution in laboratory work, pharmaceutical manufacturing, polymer manufacturing, fertilizer applications and the production of other ammonium compounds. The real headache usually isn’t the chemistry. It’s getting the right size, the right paperwork and a supplier who can ship hazmat without drama. That’s where Lab Alley steps in. Sizes run from a 500 ml bottle up to a 55 gallon drum, with 4 x 2.5L and 4 x 4L cases in between, and the SDS and lot Certificates of Analysis are on this page when you need them. We handle hazmat shipping from start to finish. Pick your size and add it to your cart, or tell us what you need through the quote form. On budget, on time, every time.
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Laboratory solvent
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Analytical and research laboratory work
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Pharmaceutical manufacturing
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Polymer manufacturing
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Fertilizer applications
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Making urea, ammonium carbonate, ammonium sulfate
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Q: What is ammonium hydroxide 28 to 30% solution used for?
A: It’s used as a laboratory solvent and in pharmaceutical manufacturing, polymer manufacturing and fertilizer applications. It’s also used to prepare other ammonium compounds such as urea, ammonium carbonate and ammonium sulfate.Q: What does ACS Grade mean, and is it suitable for analytical work?
A: This product is listed as ACS Grade, which is acceptable for analytical applications and research laboratories. The assay is 28.0 to 30.0 percent, and each lot’s results are on its Certificate of Analysis.Q: What sizes are available, and does it ship as hazmat?
A: You can choose 500 ml, 2.5 L, 4 L, 5 gallon or 55 gallon, plus cases of 4 x 2.5L or 4 x 4L. It ships as hazmat, and the DOT line reads: “Ammonia solution, 8, UN2672, PG III, Hazmat Fee Required.”Q: How do I get the SDS and Certificate of Analysis?
A: The Safety Data Sheet is in the Product Manuals tab on this page, and lot Certificates of Analysis are listed under Certificates of Analysis. If you can’t find what you need, contact us and we’ll send it.Q: How should it be stored?
A: Follow the storage guidance in the Safety Data Sheet in the Product Manuals tab. If you’re setting up storage for a larger size, contact us before you order.Q: What does it look like, and is it a strong base?
A: It’s a clear, colorless liquid with a pungent odor, and the vapors may irritate your eyes. It’s a weak base, formed when ammonia dissolves in water.Q: What other documents are available for this product?
A: Besides the SDS and Technical Data Sheet, the Product Manuals tab lists allergen, BPA, PFAS/PFOS free, TSE/BSE and non irradiation statements. It also has a manufacturing process flow chart.Q: Can I get a custom or bulk quantity?
A: Sizes go up to 55 gallons on this page. For other volumes, send your request through the quote form.
Product Information
| CAS | 1336-21-6 |
|---|---|
| Synonyms | Ammonia aqueous, Ammonium hydroxide solution, Ammoniumhydroxid, Aqueous ammonia, Aquammonia, Aqua ammonia, Ammonia aqua, Household ammonia, Ammonia monohydrate |
| Assay | 28.0-30.0% |
| PubChem ID | 14923 |
| Grade | ACS Grade |
| Color | Clear, Colorless |
| Physical form | Liquid |
| Appearance | Clear, colorless liquid |
| Odor | Ammonia odor |
| pH | 13.8 (29% solution) |
| Melting point | -72°C (-98°F) |
| Boiling Point | ca. 36°C (ca. 97°F) |
| Vapor pressure | 580 at 20°C (68°F) for 28% solution |
| Specific gravity | 0.896- 0.902 at 60 °F |
| Solubility | Fully Miscible in Water |
| Molecular formula | NH4OH |
| Molecular weight | 35.05 |
| Autoship Available | No |
| Carbon Dioxide (CO2) | Max 0.002% |
| Chloride (Cl) | Max 0.5 ppm |
| Heavy metals | Max 0.5 ppm |
| Iron (Fe) | Max 0.2 ppm |
| Nitrate (NO3) | Max 2 ppm |
| Phosphate (PO4) | Max 2 ppm |
| Pillar | High Purity |
| Substances Reducing Permanganate | To pass Test |
| Sulfur Compounds | Max 2 ppm |
| Vapor density | 0.60 NH3 |
