Molekula
Magnesium silicate (Talc)
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 silicate, commonly known as talc, is a naturally occurring mineral composed of magnesium, silicon, and oxygen. It is widely used as a filler in paper, paint, and plastics, as well as in cosmetics, pharmaceuticals, and as a lubricant in industrial applications. This fine, powdery substance is chemically stable, inert, and non-toxic, making it ideal for applications requiring purity and safety. Magnesium silicate (CAS 1343-88-0) has the molecular formula MgO3Si and a molecular weight of 100.39 g/mol. It is stored at ambient conditions with no signal word classification. Molekula supplies magnesium silicate 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.
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
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Fine, white powder |
Source: PubChem CID 72941442 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 90004923 |
| CAS Number | 1343-88-0 |
| IUPAC Name | magnesium;tris(oxygen(2-));silicon(4+) |
| EC Number | 215-681-1 |
| Molecular Formula | MgO3Si |
| Molecular Weight | 100.39 |
| Exact Mass | 99.9467 |
| SMILES | [O-2].[O-2].[O-2].[Mg+2].[Si+4] |
| InChIKey | ZADYMNAVLSWLEQ-UHFFFAOYSA-N |
| InChI | InChI=1S/Mg.3O.Si/q+2;3*-2;+4 |
| PubChem CID | 72941442 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2839905000 |
| Tariff Code | 2839900090 |
Safety & GHS
Precautionary statements
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, English (US), 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
- Ambosol
- Avibest
- Britesorb
- Gastomag
- Magmasil
- Magsorbent
- Naisuton
- Novasorb
- Salisil
- Silicic acid, magnesium salt
Frequently asked questions
What is magnesium silicate (talc) commonly used for?
Magnesium silicate (talc) is widely used as a filler in paper, paint, and plastics; as a lubricant in cosmetics and pharmaceuticals; and in ceramics, roofing materials, and as a food additive (e.g., anti-caking agent).
What is the chemical formula and molecular weight of magnesium silicate (talc)?
The molecular formula of magnesium silicate (CAS 1343-88-0) is MgO3Si, and its molecular weight is 100.39 g/mol.
How should magnesium silicate (talc) be stored?
Store talc in a cool, dry, and well-ventilated area at ambient temperature, protected from moisture to prevent clumping or degradation.
What grades or purity levels of magnesium silicate (talc) does Molekula supply?
Grade and purity information is not published on this page. Please contact Molekula to confirm the specification available for your use case.
Can Molekula supply magnesium silicate (talc) in bulk quantities?
Yes, Molekula can supply talc in bulk (e.g., 25kg bags, 1MT+ super sacks, or bulk containers), depending on order volume and logistics. Contact us for bulk pricing and lead times.
What documentation comes with a magnesium silicate (talc) order?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation. Additional certifications (e.g., FDA, REACH) are available upon request.
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.