Basic magnesium carbonate
CAS 12125-28-9
EC 235-192-7
Formula CO3.HO.Mg
MW 232.71 g/mol
Salts & Minerals Pharmaceuticals & HealthcareFood & NutritionPersonal Care & CosmeticsPlastics & PolymersRubber & TireWater TreatmentBuilding & Construction pH Regulation & BufferingFoam ControlRheology ModificationAntioxidant & Stabilizer
Description
Basic magnesium carbonate (CAS 12125-28-9, EC 235-192-7) is an inorganic mineral salt commercially available under trade names including Kinsei, MgTube, MC-L 1P, and Marimo BC 6. It is a hydrated mixed carbonate-hydroxide compound with the formula CO3.HO.Mg, classified under HS code 2836 99 11.
In pharmaceutical tablet manufacturing, it functions as a pH buffer and flow aid, neutralising acidic excipients to stabilise active ingredients. In rubber compounding, it acts as a reinforcing filler and processing stabiliser, moderating cure rates and improving dimensional consistency. Water treatment applications rely on its alkalinity to raise pH and precipitate dissolved heavy metals.
Basic magnesium carbonate is sourced in food-grade (FCC), pharmaceutical-grade (Ph.Eur.), and industrial grades to meet sector-specific purity requirements. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for EU trade. Packaging formats typically include multi-wall paper sacks and bulk containers depending on grade and volume.
In pharmaceutical tablet manufacturing, it functions as a pH buffer and flow aid, neutralising acidic excipients to stabilise active ingredients. In rubber compounding, it acts as a reinforcing filler and processing stabiliser, moderating cure rates and improving dimensional consistency. Water treatment applications rely on its alkalinity to raise pH and precipitate dissolved heavy metals.
Basic magnesium carbonate is sourced in food-grade (FCC), pharmaceutical-grade (Ph.Eur.), and industrial grades to meet sector-specific purity requirements. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for EU trade. Packaging formats typically include multi-wall paper sacks and bulk containers depending on grade and volume.
Physical Properties
| Melting Point | 600°C(decomposition) |
| Density | 2.16 g/cm3 (20 °C) |
| Form | solid |
| Water Solubility | 1000g/L at 20℃ |
| pH | 10.5 (50g/l, H2O, 20°C) suspension |
Trade & Regulatory
| HS Code | 2836 99 11 |
| Storage Class | 13 - Non Combustible Solids |
| WGK (Germany) | 3 |
Other Names
Magnesium carbonate basicMagnesium hydroxide carbonateKinseiMgTubeMC-L 1PMarimo BC 6MAGNESIUM CARBONATEMAGNESIUM CARBONATE, BASICMAGNESIUM CARBONATE (HEAVY)
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