• Magnesium Sulfate CAS 7487-88-9
  • Magnesium Sulfate CAS 7487-88-9

Magnesium Sulfate CAS 7487-88-9

Magnesium sulfate is an inorganic sulfate salt composed of magnesium cations and sulfate anions, supplied under this CAS number as the anhydrous form of the compound. As a well‑defined inorganic substance, magnesium sulfate (CAS 7487-88-9) is handled within regulated industrial, technical, and research environments, where precise material identification and documentation are essential.
The material is supplied as a discrete chemical substance with standardized specifications and complete technical documentation, including MSDS, TDS, and COA, supporting regulatory compliance, traceability, and controlled professional handling.

  • CAS: 7487-88-9
  • Synonyms: Magnesium sulfate, Anhydrous magnesium sulfate, MgSO4
  • Einecs: 231-298-2
  • Molecular Formula: MgO4S
  • Grade: Industrial grade 99%
  • Package: 200kg iron drum or 50kg plastic drum packaging
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Product Description

Physicochemical properties

PropertyValue
Chemical NameMagnesium sulfate
Molecular FormulaMgSO4 (anhydrous form); MgSO4·xH2O (hydrated forms, where x can be 1, 2, 5, or 7)
Molecular Weight120.368 g/mol (anhydrous form); varies with hydration state (e.g., 138.38 g/mol for monohydrate, 246.47 g/mol for heptahydrate)
CAS Number7487-88-9 (anhydrous form); 22189-08-8 (hydrated forms, general)
AppearanceWhite crystalline powder (anhydrous form); colorless monoclinic crystals or white crystalline solids (hydrated forms)
Density2.66 g/cm³ (anhydrous form); 2.445 g/cm³ (monohydrate); 1.68 g/cm³ (heptahydrate)
Melting Point1124 °C
Boiling Point330 °C at 760 mmHg (anhydrous form)
pHNeutral to litmus in solution (hydrated forms have a pH of 6.0, ranging from 5.5 to 6.5)
Refractive Index1.56 (anhydrous form)
StabilityStable under normal conditions; may decompose upon heating or prolonged exposure to light
Storage ConditionStore in a cool, dry place, away from light and moisture; sealed for long-term storage


Application Areas

In the pharmaceutical field, it is used to treat gestational hypertension, preeclampsia, and eclampsia, lower blood pressure, and control seizures. As an anticonvulsant, it alleviates symptoms by inhibiting neuromuscular conduction.
In the agricultural field, magnesium is used as a fertilizer to supplement magnesium and promote plant growth

Storage conditions

Dry and sealed: Easy to absorb moisture (especially heptahydrate), it should be stored in a dry place and sealed container.
Avoid direct sunlight and maintain good ventilation.
Temperature control: Store at room temperature and avoid high temperatures (heptahydrate may lose water at high temperatures).
Keep away from incompatible substances: store separately from strong acids and oxidants

Safety precautions

Personal protection: Wear gloves, masks, and goggles when in contact with powder to avoid inhalation or contact with skin/eyes.
Medical usage precautions: Intravenous injection should strictly control the dosage, as too fast may lead to hypotension and respiratory depression. Use with caution in patients with renal insufficiency (reduced magnesium excretion can easily lead to poisoning).
Firefighting measures: Non flammable, but high-temperature decomposition may release toxic sulfur oxides. Firefighters need to wear self-contained breathing apparatus

FAQ - Technical & Supply Chain

  • Q:

    Does CAS 7487-88-9 correspond specifically to anhydrous magnesium sulfate?

    A: Yes. CAS 7487-88-9 is assigned specifically to the anhydrous form of magnesium sulfate (MgSO₄).
  • Q:

    Is magnesium sulfate under this CAS number supplied as a mixture or formulation?

    A: No. It is supplied as a defined inorganic compound for professional handling within regulated industrial or research environments.
Documents

Documents and Product Support

For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.

  • COA for batch-based quality reference
  • TDS for key physical and chemical information
  • SDS / MSDS for handling, storage, and safety reference
  • Packing information for sample, trial, and bulk orders
  • Technical communication based on application and specification requirements
Quotation

Information to Confirm Before Quotation

Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.

  • Product name and CAS number
  • Application or intended end use
  • Required purity, grade, or specification
  • Sample quantity, trial order, or bulk demand
  • Preferred packing form or net weight
  • Destination country or port
  • Required documents or compliance expectations
Storage & Handling

Packaging, Storage, and Handling Notes

Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.

Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.

Supply Support

Sample, Bulk Order and Repeat Supply Support

Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.

For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.

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