Ammonium acetate
CAS 631-61-8
EC 211-162-9
Formula C2H4O2.H3N
MW 77.08 g/mol
Catalysts & Catalyst Precursors Personal Care & CosmeticsPharmaceuticals & HealthcareFood & NutritionBiotechnology & Life Sciences CatalysisAntioxidant & StabilizerPreservation & BiocideHumectant & Moisturizing
Description
Ammonium acetate (CAS 631-61-8, EC 211-162-9), also known as NH4OAc or 1BEEM, is an inorganic salt formed by the neutralisation of acetic acid with ammonia. It carries no assigned E-code and is commercially available under the abbreviations NH4OAc and acetate d'ammonium across European markets.
In pharmaceutical and biotech applications, ammonium acetate functions as a volatile buffer in LC-MS workflows, decomposing cleanly under ionisation without leaving non-volatile residues. In personal care formulations, it acts as a pH-adjusting catalyst and skin-conditioning agent, supporting electrolyte balance in leave-on and rinse-off products.
Ammonium acetate is supplied in technical, FCC, and Ph.Eur.-compliant grades as a white crystalline solid, with packaging typically ranging from 25 kg bags to bulk quantities. It is registered under REACH and subject to standard GHS classification requirements for handling and transport within the EU.
In pharmaceutical and biotech applications, ammonium acetate functions as a volatile buffer in LC-MS workflows, decomposing cleanly under ionisation without leaving non-volatile residues. In personal care formulations, it acts as a pH-adjusting catalyst and skin-conditioning agent, supporting electrolyte balance in leave-on and rinse-off products.
Ammonium acetate is supplied in technical, FCC, and Ph.Eur.-compliant grades as a white crystalline solid, with packaging typically ranging from 25 kg bags to bulk quantities. It is registered under REACH and subject to standard GHS classification requirements for handling and transport within the EU.
Physical Properties
| Melting Point | 114 °C |
| Boiling Point | 138.46°C (rough estimate) |
| Density | 1.17 g/cm³ @ Temp: 20 °C |
| Flash Point | 136 °C |
| Appearance | Ammonium acetate is a white crystalline solid. Acetic odor. |
| Color | White |
| Odor | Slight acetic acid odor |
| Form | Solid |
| Water Solubility | 1480 g/L (20 ºC) |
| Vapor Pressure | 0.017-0.02Pa at 25℃ |
| Refractive Index | 1.4350 (estimate) |
| pH | 6.7-7.3 (50g/l, H2O, 25℃) |
| Log P | -2.79 |
Trade & Regulatory
| HS Code | 29152900 |
| UN Number | 9079 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
azanium acetateammonium ethanoateacetic acid, ammonium salt1BEEMNH4OACAmmoniumacetate
Related Products
Raw Materials
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