Acids & Salts Available — Bulk Only

Magnesium Nitrate Hexahydrate

CAS 13446-18-9 · Formula H12MgN2O12 · MW 256.41 g/mol

Reagent-grade crystalline magnesium nitrate for pyrotechnics, nitric-acid concentration, and plant-nutrition chemistry. Established uses include pyrotechnic formulations, concentration of nitric acid, and a fertilizer-grade source of magnesium and nitrogen; it also serves as a catalyst in petrochemical production and a sensitizer for lithographic plates.

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UN Number
UN 1474
Hazard Class
Class 5.1
HS Code
2834.29
At a Glance
Material Family
Acids & Salts
Record Type
Pure compound
Primary Role
pH Adjustment
Functional Roles
Industries Served
Oil & Gas
Applications & Use Cases
  • Pyrotechnics: Oxidizer and component in pyrotechnic mixtures
  • Nitric acid processing: Dehydrating agent for concentrating nitric acid
  • Fertilizers: Combined magnesium and nitrogen nutrient source
  • Petrochemical catalysis: Catalyst in petrochemical production
  • Lithography: Sensitizer for lithographic plates
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

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DOT / UN Transport Classification
DOT hazard class 5.1 placard
UN / DOT NumberUN 1474
Hazard Class / DivisionClass 5.1
Packing GroupIII
Proper Shipping NameMagnesium nitrate

Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.

HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
2834 . 29
Chapter 28
Inorganic chemicals; compounds of precious metals and rare-earth metals
Heading 28.34
Internationally harmonized (WCO HS)
Subheading 2834.29
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
13446-18-9
Molecular Formula
H12MgN2O12
Molecular Weight
256.41 g/mol
IUPAC Name
magnesium;dinitrate;hexahydrate
PubChem CID
InChI Key
MFUVDXOKPBAHMC-UHFFFAOYSA-N
Synonyms & Trade Names
Magnesium nitrate hexahydrate Magnesium dinitrate hexahydrate Dusicnan horecnaty MAGNESIUM(II) NITRATE (1:2), HEXAHYDRATE magnesium;dinitrate;hexahydrate Nitric acid, magnesium salt, hexahydrate Magnesium Matrix Modifier H12MgN2O12 Magnesium (II) nitrate, hexahydrate Magnesium nitrate--water (1/2/6)
Full Description

Magnesium nitrate hexahydrate (CAS 13446-18-9, Mg(NO3)2·6H2O) is a deliquescent crystalline salt supplied to ACS reagent specification. Established uses include pyrotechnic formulations, concentration of nitric acid, and a fertilizer-grade source of magnesium and nitrogen; it also serves as a catalyst in petrochemical production and a sensitizer for lithographic plates.

Frequently Asked Questions

What is magnesium nitrate hexahydrate used for?

Magnesium nitrate hexahydrate (CAS 13446-18-9, Mg(NO3)2·6H2O) is used in pyrotechnic formulations as an oxidizer, as a dehydrating agent for concentrating nitric acid, and as a combined magnesium-and-nitrogen fertilizer source. It also serves as a petrochemical catalyst and a sensitizer for lithographic plates.

What is the chemical formula of magnesium nitrate hexahydrate?

Its formula is Mg(NO3)2·6H2O (reported as H12MgN2O12), CAS 13446-18-9. This grade is supplied as deliquescent crystals to ACS reagent specification.

What does ACS reagent crystal grade mean for this material?

ACS reagent grade means it meets American Chemical Society purity specifications, suitable for analytical and laboratory use. Confirm lot-specific assay and impurity values against the Certificate of Analysis.

Is magnesium nitrate hexahydrate hygroscopic?

Yes, it is a deliquescent crystalline salt that absorbs atmospheric moisture. Store in tightly closed containers and account for moisture uptake in handling and weighing.

What is the HS code and how is bulk magnesium nitrate hexahydrate supplied?

It classifies under HS 2834.29 (nitrates: other). It is supplied as ACS reagent crystal in bulk for pyrotechnic, nitric-acid-processing, fertilizer, catalysis, and lithographic applications; request a bulk quote with CoA and SDS.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.