Salts & Minerals
REACH
Magnesium acetate
CAS Number
142-72-3
EC Number
205-554-9
What is Magnesium acetate?
Magnesium acetate (CAS 142-72-3), also known as magnesium diacetate, is an inorganic salt used in pharmaceutical, food, and personal care manufacturing.
Where is Magnesium acetate used?
- Pharmaceutical manufacturing: buffering agent in tablet coatings and injectable formulations where controlled pH is critical to product stability
- Personal care: regulates acidity and extends shelf life in skin care and hair care products
- Catalyst precursor in polymerization and esterification reactions, particularly in the production of polyethylene terephthalate (PET) and other polyesters
- Food processing: acidity regulator and mineral supplement in fortified products and functional beverages
- It functions as a pH buffer, catalyst precursor, and preservative agent in formulation and industrial processing.
Commercial specifications
- Standard grades include food-grade (FCC), pharmaceutical-grade (USP/BP), and technical-grade material
- Bulk supply in multi-kilogram bags through to pallet quantities
Other Names (Synonyms)
Mg(II) acetate|Mg acetate|magnesium diacetate|acetic acid, magnesium salt (2:1)|acetic acid magnesium salt|Magnesium acetate anhydrous|Cromosan
What are the physical properties of Magnesium acetate?
Melting Point 80-85 °C
Density 1.18 g/cm³
Appearance white deliquescent crystals
Color white orthorhombic/monoclinic crystals, crystalline
Form Liquid
Water Solubility Not miscible or difficult to mix with water.
Refractive Index n 20/D 1.358
pH 7.95(1 mM solution);8.23(10 mM solution);8.41(100 mM solution);8.78(1000 mM solution)
Log P -1.38
Which trade and regulatory codes apply to Magnesium acetate?
WGK (Germany) 3