Molekula
Magnesium carbonate hydroxide pentahydrate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Magnesium carbonate hydroxide pentahydrate is a basic magnesium salt used primarily as a flame retardant, filler in plastics and rubber, and in pharmaceuticals as an antacid. It appears as a white, odorless powder with mild alkaline properties. This chemical has a CAS number of 56378-72-4, a molecular formula of (MgCO3)4 · Mg(OH)2 · 5H2O, and a molecular weight of 485.65 g/mol. It is stable under ambient storage conditions and carries no signal word for hazard classification. Molekula supplies magnesium carbonate hydroxide pentahydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Specifications
| Property | Value |
|---|---|
| Appearance | White crystal |
| Water | ≤2% |
| Assay | ≥40.0% (MgO Calculated) |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Base |
Identification
| Property | Value |
|---|---|
| SKU | 11459395 |
| CAS Number | 56378-72-4 |
| Molecular Formula | (MgCO3)4 · Mg(OH)2 · 5H2O |
| Molecular Weight | 485.65 |
| REACH Code | Y113 |
| HTS Code | 28369950 |
| Tariff Code | 2836991100 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is magnesium carbonate hydroxide pentahydrate primarily used for?
It is commonly used as a flame retardant, filler in plastics and rubber, and in pharmaceuticals as an antacid or laxative.
What is the chemical formula and molecular weight of magnesium carbonate hydroxide pentahydrate?
The formula is **(MgCO₃)₄ · Mg(OH)₂ · 5H₂O**, and the molecular weight is **485.65 g/mol**.
How should magnesium carbonate hydroxide pentahydrate be stored?
Store at **ambient conditions** in a cool, dry place, away from incompatible substances.
What grades or purity levels are available for this product?
We supply **technical grade** and **pharmaceutical/food-grade** (where applicable) with typical purity ≥98%.
Can Molekula supply magnesium carbonate hydroxide pentahydrate in bulk quantities?
Yes, we offer bulk quantities (minimum order quantities vary by grade; contact us for specifics).
What documentation comes with an order of this product?
Each order includes a **Certificate of Analysis (CoA)**, Material Safety Data Sheet (MSDS), and a product specification sheet.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.