Magnesium acetate tetrahydrate
CAS 16674-78-5
EC 605-451-2
Formula C2H4O2.2H2O.1/2Mg
MW 214.45 g/mol
Salts & Minerals Personal Care & CosmeticsPharmaceuticals & HealthcareFood & NutritionBiotechnology & Life Sciences Preservation & BiocideCatalysispH Regulation & BufferingHumectant & Moisturizing
Description
Magnesium Acetate Tetrahydrate (CAS 16674-78-5) is the hydrated magnesium salt of acetic acid, also referenced as Magnesium Acetate 4-Hydrate or Magnesium Acetate Hydrous. It carries no assigned E-code and is commercially available under the EC number 605-451-2. The molecular formula is C2H4O2.2H2O.1/2Mg.
In pharmaceutical and biotech applications, it functions as a buffering agent, maintaining stable pH in cell culture media and enzyme assay systems by moderating acidic or alkaline drift. In personal care formulations, it acts as a humectant and skin conditioner, drawing moisture to the stratum corneum. It also serves as a catalyst and antimicrobial additive in select chemical processing contexts.
The material is supplied as a lyophilized powder suitable for food-grade, cosmetic, and pharmaceutical manufacturing. Procurement teams should confirm compliance with FCC, Ph.Eur., and REACH requirements depending on end-use application. Standard packaging formats are available upon request through our European distribution network.
In pharmaceutical and biotech applications, it functions as a buffering agent, maintaining stable pH in cell culture media and enzyme assay systems by moderating acidic or alkaline drift. In personal care formulations, it acts as a humectant and skin conditioner, drawing moisture to the stratum corneum. It also serves as a catalyst and antimicrobial additive in select chemical processing contexts.
The material is supplied as a lyophilized powder suitable for food-grade, cosmetic, and pharmaceutical manufacturing. Procurement teams should confirm compliance with FCC, Ph.Eur., and REACH requirements depending on end-use application. Standard packaging formats are available upon request through our European distribution network.
Physical Properties
| Melting Point | 80 °C |
| Density | 1.164 g/cm³ @ Temp: 25 °C |
| Appearance | White Crystal |
| Color | White |
| Odor | Acetic odour |
| Form | lyophilized powder |
| Water Solubility | 1200 g/L (15 ºC) |
| Refractive Index | n 20/D 1.358 |
| pH | 6.1 (50g/l, H2O, 20℃) |
Trade & Regulatory
| HS Code | 29152900 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 3 |
Other Names
Cacium acetateMAGNESIUM ACETATEACETIC ACID MAGNESIUM SALTMAGNESIUM ACETATE HYDRATEDMAGNESIUM ACETATE, HYDROUSMAGNESIUM ACETATE, 4-HYDRATEMagnesium acetate，tetrahdrate
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Raw Materials
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