Molekula
Magnesium powder
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Magnesium powder is a highly reactive, silvery-white metal used in pyrotechnics, fireworks, and as a reducing agent in chemical synthesis. It’s also applied in metallurgy, desulfurization, and as an alloying element. This fine powder has a CAS number of 7439-95-4, a molecular weight of 24.305 g/mol, and requires ambient storage. It carries a **Danger** signal word due to its flammability and reactivity. Molekula supplies Magnesium powder 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
On backorder — expected to ship by 2 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
-
100 g — £46.70 per pack ex VAT · £56.04 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Dark Grey powder |
| Assay | ≥98.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 4.3 (4.2) |
| Packing Group | I |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Silvery-white metal |
| Odour | None |
| Melting Point | 651 °C |
| Boiling Point | 1100 °C |
| Solubility (other solvents) | Insol in cold water, chromium trioxides; soluble in mineral acids |
| Vapour Pressure | 1 Pa at 428 °C |
Source: PubChem CID 5462224 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90021881 |
| CAS Number | 7439-95-4 |
| IUPAC Name | magnesium |
| EC Number | 231-104-6 |
| Molecular Formula | Mg |
| Molecular Weight | 24.305 |
| Exact Mass | 23.985 |
| SMILES | [Mg] |
| InChIKey | FYYHWMGAXLPEAU-UHFFFAOYSA-N |
| InChI | InChI=1S/Mg |
| PubChem CID | 5462224 |
| UN Number | UN1418 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 8104.30.0000 |
| Tariff Code | 8104300090 |
Safety & GHS
-
Flammable
GHS02
Hazard statements
- H250 Catches fire spontaneously if exposed to air
- H260 In contact with water releases flammable gases which may ignite spontaneously
Precautionary statements
- P210 Keep away from heat/sparks/open flames/hot surfaces - No smoking
- P223 Keep away from any possible contact with water, because of violent reaction and possible flash fire
- P231+232 Handle under inert gas. Protect from moisture
- P235+410 Keep cool. Protect from sunlight
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+334 IF ON SKIN: Immerse in cool water/wrap in wet bandages
Documents
Safety Data Sheets (SDS)
Available in English, English (US), Estonian, French, German, Italian, Portuguese, 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.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
- Bye Zero
- Dietary Magnesium
- Giftpeak Magnesium Sleep Cream
- MAGNESIUM
- Magnesium metallicum
- Magnesium powdered
- Magnesium sheet
- Minaral mi tea
- Nmc Magma Mineral Pack
- Rieke's active magnesium
Frequently asked questions
What is magnesium powder commonly used for?
Magnesium powder is widely used in pyrotechnics, fireworks, flash photography, and as a reducing agent in metallurgy and chemical synthesis.
What is the chemical formula and molecular weight of magnesium powder?
The chemical formula is **Mg**, and the molecular weight is **24.305 g/mol**.
How should magnesium powder be stored?
Store magnesium powder in a **cool, dry place at ambient temperature**, away from moisture, oxidizing agents, and ignition sources.
What purity grades of magnesium powder does Molekula supply?
Molekula supplies magnesium powder in **technical and reagent grades**, with typical purities of **96-99.9%**.
Can Molekula supply magnesium powder in bulk quantities?
Yes, Molekula can supply magnesium powder in **bulk quantities**, with flexible packaging options (e.g., drums, bags) based on order volume.
What documentation is provided with a magnesium powder order?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and a **Certificate of Conformity** for traceability and compliance.
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.