Magnesium acetate tetrahydrate is a colorless monoclinic crystalline solid. It is hygroscopic by nature and needs proper sealed storage to avoid absorbing moisture from ambient air. It has a density of 1.454 g/cm³ and melts at 80°C. This product features excellent solubility performance: highly soluble in water with solubility of 120 g/100mL at 15°C, and very soluble in methanol and ethanol. Upon heating, it gradually loses crystal water and converts into anhydrous magnesium acetate, which further decomposes to magnesium oxide at elevated temperature.
Thanks to its outstanding solubility, stable ionic releasing property and mild buffer characteristic, magnesium acetate tetrahydrate serves as a versatile magnesium source widely adopted across laboratory analysis, biochemical research, organic synthesis and multiple industrial sectors.
In analytical chemistry, it is a classic reagent to prepare uranyl magnesium acetate solution for quantitative sodium detection, also applied for ion precipitation and separation work. For biochemistry and molecular biology, it supplies magnesium ions as essential cofactor to stabilize enzyme activity, commonly used in protein crystallization, PCR buffer formulation and in-vitro transcription experiments.
In chemical synthesis, it works as an eco-friendly catalyst for transesterification and polymer degradation reactions. It also acts as precursor material for preparing magnesium oxide fillers and metal-organic framework (MOF) materials. In textile processing, it can be used as dye fixative in printing industry. Besides, it is applicable for electroplating additive, feed nutrition supplement and cosmetic raw materials.
Our magnesium acetate tetrahydrate is available in multiple grades including analytical grade, ReagentPlus® grade and BIOXT grade with purity ≥99% or 99.5%. The product appears as white powder/crystal, manufactured under strict quality control with stable batch consistency. Full COA will be supplied together with shipment.
Appearance: White Powder / Colorless Monoclinic Crystal
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Key Features
High solubility in water, methanol and ethanol
Hygroscopic monoclinic crystal, stable under proper sealed storage
Reliable source of magnesium ion for lab & industrial formulation
Multiple purity grades for analytical, biological and industrial usage
Low impurity, consistent batch quality, COA available
Main Applications
✅ Analytical chemistry: Sodium detection reagent, ion precipitation agent, standard solution preparation
✅ Molecular biology & biochemistry: Protein crystallization, PCR buffer, enzyme reaction cofactor
✅ Organic synthesis: Catalyst, precursor for MgO and MOF material synthesis
✅ Textile industry: Dye fixing agent for textile printing
✅ Other fields: Electroplating additive, feed additive, cosmetic raw material
| Magnesium acetate tetrahydrate Chemical Properties |
| Melting point | 72-75 °C(lit.) |
| bulk density | 510kg/m3 |
| density | 1.454 |
| refractive index | n |
| storage temp. | Store at +15°C to +25°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | lyophilized powder |
| color | White |
| Specific Gravity | 1.454 |
| Odor | Acetic odour |
| PH | 6.1 (50g/l, H2O, 20℃) |
| PH Range | 7 - 9 |
| Water Solubility | 1200 g/L (15 ºC) |
| Sensitive | Hygroscopic |
| Merck | 14,5654 |
| BRN | 3730605 |
| Stability: | Hygroscopic |
| InChI | 1S/2C2H4O2.Mg.4H2O/c2*1-2(3)4;;;;;/h2*1H3,(H,3,4);;4*1H2/q;;+2;;;;/p-2 |
| InChIKey | XKPKPGCRSHFTKM-UHFFFAOYSA-L |
| SMILES | O.O.O.O.CC(=O)O[Mg]OC(C)=O |
| CAS DataBase Reference | 16674-78-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Magnesium diethanoate tetrahydrate(16674-78-5) |
| EPA Substance Registry System | Magnesium acetate tetrahydrate (16674-78-5) |
| Safety Information |
| Safety Statements | 22-24/25 |
| WGK Germany | 3 |
| RTECS | AI5600000 |
| F | 3 |
| TSCA | Yes |
| HS Code | 29152900 |
| Storage Class | 13 - Non Combustible Solids |
