Magnesium nitrate hexahydrate

Synonym(s):Magnesium nitrate hexahydrate

CAS NO.：13446-18-9
Empirical Formula: H12MgN2O12
Molecular Weight: 256.41
MDL number: MFCD00085308
EINECS: 603-823-9
SAFETY DATA SHEET (SDS)
Update Date: 2026-01-13 11:24:51

Magnesium nitrate hexahydrate Structural

What is Magnesium nitrate hexahydrate?

Chemical properties

White colourless crystal

The Uses of Magnesium nitrate hexahydrate

Magnesium nitrate hexahydrate may be used as a starting material for the synthesis of Mg-Al spinel precursors, required for the preparation of magnesium aluminate spinel (MgAl₂O₄) powder.

What are the applications of Application

Magnesium nitrate hexahydrate is a hygroscopic salt used in concentration of nitric acid and detection of selenium in blood

General Description

Magnesium nitrate hexahydrate is a hydrated magnesium salt. A mixture of magnesium nitrate hexahydrate and magnesium chloride hexahydrate has been reported as a potential phase change material (PCM) for the storage of latent thermal energy. It has been employed as a base material in this mixture to evaluate the storage and effective utilization of urban waste heat from emerged co-generation systems. Its crystals belong to the monoclinic crystal system.

Hazard

Low toxicity by ingestion. A mild skin and eye irritant.

Purification Methods

Crystallise the nitrate from water (2.5mL/g) by partial evaporation in a desiccator. It is deliquescent and is soluble in EtOH. After two recrystallisations, ACS grade salt has: metal (ppm) Ca (6.2), Fe (8.4), K (2), Mo (0.6), Na (0.8), Se (0.02).

Properties of Magnesium nitrate hexahydrate

Melting point:	89 °C
Boiling point:	330 °C
Density	1.63
vapor density	6 (vs air)
vapor pressure	1 mm Hg ( 621 °C)
Flash point:	−26 °F
storage temp.	2-8°C
solubility	H₂O: 1 M at 20 °C, clear, colorless
form	turnings
color	White
Specific Gravity	1.64
PH	5.0-8.2 (25℃, 50mg/mL in H2O)
Water Solubility	420 g/L (20 ºC)
Sensitive	Hygroscopic
Merck	14,5674
BRN	4948473
Stability:	Stable. Strong oxidizer - contact with organic material may lead to fire. Do not store near combustible materials. Incompatible with combustible materials, organics, strong reducing agents.
CAS DataBase Reference	13446-18-9(CAS DataBase Reference)
EPA Substance Registry System	Magnesium (II) nitrate, hexahydrate (13446-18-9)

Safety information for Magnesium nitrate hexahydrate

Signal word	Danger
Pictogram(s)	Flame Over Circle Oxidizers GHS03 Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07
GHS Hazard Statements	H272:Oxidising liquids;Oxidising solids H290:Corrosive to Metals H314:Skin corrosion/irritation H332:Acute toxicity,inhalation
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P220:Keep/Store away from clothing/…/combustible materials. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.