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Magnesium Sulfate |Anhydrous, monohydrate & Heptahydrate | E518 | Magnesium Fortifier & pH Regulator

33 Inquiries

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CAS No.:

10034-99-8

Grade:

Food Grade

Content:

99.5%

Port:

qingdao, China

Packaging:

25kgs/bag

Sample Available:

Yes

Price valid (until):

2024-01-20

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PREMIUM INGREDIENT CO.,LTD

Company Type:

Manufactory

Location:

United Kingdom

Payment Terms:

TT against copy of documents,L/C

Average Lead Time:

80 days

Qualification:

Main Products:

l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate

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Product Description
Seller Information
Inquiry History

Description

Product Detail

Basic Information

English Name	Magnesium Sulfate
Synonyms	Magnesium Sulphate, Epsom Salt (heptahydrate)
E Number	E518
Appearance	White crystalline powder or crystals
Solubility	Soluble in water, solubility varies with hydration forms
Odor	Odorless
Available Forms	Anhydrous, Monohydrate, Heptahydrate

Magnesium Sulfate Hydrate Grades Comparison Table

Hydrate Type	Common Name	CAS Number	Molecular Formula	Core Characteristics	Main Applications
Anhydrous	Magnesium Sulfate Anhydrous	7487-88-9	MgSO₄	Highest magnesium content, low moisture, good flowability	Dietary supplements, pharmaceutical formulations, nutrient premix
Monohydrate	Magnesium Sulfate Monohydrate	14168-73-1	MgSO₄·H₂O	Moderate water content, stable powder form, easy to handle	Food fortification, beverage mineral fortification, nutritional powders
Heptahydrate	Magnesium Sulfate Heptahydrate (Epsom Salt)	10034-99-8	MgSO₄·7H₂O	Most common commercial form, good solubility, crystal form	Bath salts, agricultural fertilizer, food additive E518, pharmaceutical

Product Overview

Magnesium Sulfate (E518) is a series of inorganic magnesium salts available in Anhydrous, Monohydrate and Heptahydrate grades. As a widely used magnesium fortifier and acidity regulator, it provides reliable magnesium nutrition and stable pH control for food and dietary supplement formulations.

This product series also provides anti-caking and firming properties, widely applied in mineral premixes, solid beverages, tablets, cereal foods and blended powder products.

Character

1.All grades are white crystalline powder or crystals, odorless, with a slightly saline and bitter taste.

2.Readily soluble in water, forming clear magnesium solution, suitable for solid beverages and reconstituted drinks.

3.Reliable magnesium mineral source, providing essential magnesium nutrition for dietary supplements and functional foods.

4.Works as acidity regulator to buffer pH value and balance sour taste in food systems.

5.Good powder flowability and anti-caking performance, preventing powder agglomeration in mineral premixes.

6.Available in three crystal-water grades to match different moisture, hygroscopicity and processing requirements.

7.Good thermal and storage stability under normal food processing conditions.

8.Food grade and pharmaceutical grade comply with international standards for magnesium fortifiers, acidity regulators and anti-caking agents.

Main Functions

1.Magnesium Fortification Function: Reliable magnesium mineral source for nutritional enrichment in food, beverage and dietary supplement formulations, delivering essential magnesium nutrition.

2.pH Adjusting & Buffering Function: Works as acidity regulator to adjust and stabilize pH value in food systems, balancing sour taste and improving formulation stability.

3.Anti-Caking & Flow-promoting Function: Improves powder flowability and prevents powder agglomeration in mineral premixes, blended powder products and tablet formulations.

4.Firming Function: Acts as firming agent to maintain texture stability and water retention in processed solid food systems.

Applications

1.Food & Dietary Supplement Industry

This Magnesium Sulfate series is widely used in dietary supplements, multivitamin and mineral powder premixes, solid beverages, tablets, breakfast cereals and blended powder products.

Heptahydrate – Maximum market dosage Widely used in regular dietary supplement tablets, hard capsules, mineral premixes and ordinary solid beverages. Its stable crystal form, good flowability and cost-effectiveness make it the universal grade for mass production.

Monohydrate Applied in high-humidity processing environments and high-temperature tableting production. Its low hygroscopicity prevents caking and moisture absorption during long-term storage.

Anhydrous Mainly used in moisture-sensitive formulations and high-end nutritional products where strict moisture control is required. Its extremely strong hygroscopicity requires sealed packaging and dry storage.

2.Confectionery & Cereal Food

Suitable for fortified cereals, pressed candies and functional snack powders. It achieves dual effects of magnesium nutrition enhancement and pH regulation without affecting product original flavor and texture.

3.Pharmaceutical Industry

Pharma-grade Magnesium Sulfate (mainly Heptahydrate and Monohydrate) is used in oral magnesium supplements and therapeutic preparations, with limited industrial consumption, not the core business scope.

Packaging & Storage

Packaging: 25kg multi-ply paper bags with inner PE liner; jumbo bags (500kg/1000kg) for bulk shipment; fiber drum packaging available for pharmaceutical-grade products.

Storage Requirements: Store in cool, dry, ventilated warehouse. Keep away from moisture, strong acid substances, direct sunlight and high heat environment. Anhydrous grade requires extra sealed protection due to strong hygroscopicity.

Specification	GB29207-2012	FCC VII
Content(MgSO4), w/% ≥	99.0	99.5
Heavy Metal(as Pb),mg/kg ≤	10	————
Lead(Pb),mg/kg ≤	2	4
Selenium(Se),mg/kg ≤	30	30
PH (50g/L,25℃)	5.5-7.5	————
Chloride(as Cl),w/% ≤	0.03	————
Arsenic(As),mg/kg ≤	3	————
Iron(Fe),mg/kg ≤	20	————
Loss on Ignition (Heptahydrate),w/%	40.0-52.0	40.0-52.0
Loss on Ignition(Dried),w/%	22.0-32.0	22.0-28.0

Basic Info

Product Name:

Magnesium sulfate heptahydrate

Other Name:

Sulfuric acid,magnesium salt,hydrate (1:1:7);Sulfuric acid magnesium salt (1:1),heptahydrate;Magnesium sulfate heptahydrate;Magnesium sulfate heptahydrate (MgSO4.7H2O);Magnesium sulfate (MgSO4) heptahydrate;Magnesium sulfate hydrate (MgSO4.7H2O)

CAS No.:

10034-99-8

Molecular Formula:

H2O4S.7H2O.Mg

InChIKeys:

InChIKey=QBRPIXOGXMPIMA-UHFFFAOYSA-N

Molecular Weight:

246.47

Exact Mass:

246.010727

EC Number:

231-298-2

HScode:

28332100

Categories:

Nutrition Supplements

Characteristics

PSA:

95.6

XLogP3:

-0.70730

Appearance:

White Solid

Density:

1.67 g/cm³

Melting Point:

1124°C

Boiling Point:

330ºC at 760 mmHg

Water Solubility:

soluble in in water and acid. Slightly soluble in alcohol and glycerol.H2O: 1 M at 20 °C, clear, colorless

Storage Conditions:

Store at RT.

Vapor Pressure:

<0.1 mm Hg ( 20 °C)

Vapor Density:

<0.01 (vs air)

See More Magnesium sulfate heptahydrate Properties 

Hazard Identification

Classification of the substance or mixture

Not classified.

GHS label elements, including precautionary statements

Precautionary statement(s)
Pictogram(s)	No symbol.
Signal word	No signal word
Hazard statement(s)	none
Prevention	none
Response	none
Storage	none
Disposal	none

Other hazards which do not result in classification

no data available

Handling and Storage

Precautions for safe handling

Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.

Conditions for safe storage, including any incompatibilities

Store the container tightly closed in a dry, cool and well-ventilated place. Store apart from foodstuff containers or incompatible materials.

See More Magnesium sulfate heptahydrate Safety Data Sheet 

Seller Information

Business Type: Manufactory
Main Products: l-lysine monohydrochloride,dl-methionine,n-acetyl-l-cysteine,l-methionine,glycine,l-cysteine hcl monohydrate
Location: dongsheng road
Payment Terms: TT against copy of documents,L/C
Average lead Time: 80 days
Total Annual Revenue: $5 million-$10 million
Total Employees: 5-10
Year of Establishment: 2015

Premium Ingredient specializes in supplying and distributing food & feed amino acids, food additives and functional ingredients for more than a decade.

Our food additives portfolio covers phosphates, acidulants, preservatives, sweeteners, thickeners and leavening agents.

Our functional ingredients include vitamins, mineral products, botanical extracts, nutraceutical ingredients, functional fibers & bulking agents.

We serve over 100 clients across food & beverage, dietary supplement, sports nutrition, personal care, pharmaceutical and animal feed sectors, with products exported to dozens of countries worldwide. All our goods are sourced from top-tier Chinese manufacturers with proven expertise and complete management systems.

◆Amino Acids	◆ phosphates	◆ acidulants
◆ preservatives	◆ sweeteners	◆ functional fiber&bulking agent
◆ thickeners	◆ Leavening agents	◆ mineral products
◆ Botanical extracts	◆ vitamins	◆ nutritional products

Backed by over 10 years of industry experience, we provide one-stop-shop solutions combining high-grade products, prompt communication, on-time delivery and real-time market intelligence. Thanks to our long-term deep-rooted partnerships with source manufacturers, we can guarantee sufficient inventory, stable pricing and fast shipment.

Our third-party certifications include ISO9001, ISO14001, HACCP, HALAL, KOSHER, GMP, FAMI-QS and more. You can count on Premium Ingredient as your trusted global raw material supplier.

------------------------------------- Mission------------------------------------

Acting as a bridge between reliable Chinese manufacturers and global buyers, we carefully select partner factories with mature production capabilities and sound management systems. We deliver not only premium-quality raw materials, but also value-added services including market trend updates, supply chain risk alerts, product formulation consultation, consolidated sample shipment and full document support for import compliance. We timely forward overseas customers’ requirements to our partner factories to support product upgrading and achieve mutual growth.

-------------------------------------Our Quality------------------------------------

Our Quality

As a professional ingredient supplier, we do not operate manufacturing facilities. Instead, we build robust quality‑assurance workflows across our whole supply chain to safeguard consistent product performance for every shipment

Strict Supplier Due‑Diligence

Before entering any partnership, we carry out on-site factory visits and assess industry reputation, followed by multi-stage qualification reviews. We validate production qualifications, export track records, quality management systems and complete certification packages. New suppliers must pass sample evaluation, and only fully vetted top-tier factories are admitted to our approved supplier pool

Batch‑by‑batch Document Verification

For every order, we cross‑check factory‑issued test documents against agreed specifications including FCC, USP, EP, AJI, CP or your customized requirements. We will not forward documents to customers until key indicators are fully aligned with specifications. This step avoids inconsistent or mismatched documentation common in raw‑material trade.

Independent Third‑party Testing Coordination

Upon client request, we can arrange independent laboratory inspections from recognized third‑party institutions. We manage sample delivery, test protocol communication and report follow‑up to support your market compliance needs.

Quality Closure & Continuous Improvement

We keep traceable records for all delivered batches. If any quality concern arises, we act as your single point‑of‑contact to trace root causes with source factories, drive corrective actions and deliver practical resolution plans. Client feedback is systematically collected to optimize our supplier management and document‑review procedures.

We provide a comprehensive set of compliance documents to support your import and registration work. Our available documentation includes but is not limited to:

★ ISO Certification ★ Halal Certificate

★ Kosher Certificate ★ IP certificate

★ Haccp certificate ★ Allergens with Glutens

★ GRAS Statement ★ HACCP Program

★ BSE/TSE Statement ★ Certificate of Analysis

★ Country of Origin Certificate ★ Material Safety Data Sheet

★ Flow Chart (product processing) ★ Food Grade Certificate

★ Nutritional Information ★ GMO Statement

★ Specification Sheet

Inquiry History

33 Inquiries

Country	Product	Purchase Quantity	Date Posted
Latvia	Magnesium sulphate 10034-99-8	50 KG	Jun 6, 2024
Russia	Magnesium sulfate heptahydrate	200 KG	Oct 19, 2026
Indonesia	Magnesium Sulfate Heptahydrate for Cosmetics Grade	25 KG	Sep 9, 2026
Poland	Magnesium Sulfate Heptahydrate	1000 KG	Mar 10, 2026
India	Magnesium Sulfate Heptahydrate	27 MT	Dec 18, 2025
Poland	magnesium sulphate heptahydrate	100 MT	Nov 28, 2025
Turkey	Magnesium Sulfate Heptahydrate	500 G	Jun 6, 2025
Turkey	Magnesium Sulfate Heptahydrate	500 G	May 30, 2025
Pakistan	Magnesium Sulfate Heptahydrate	500 KG	Feb 13, 2025
Germany	Magnesium Sulphate Heptahydrate	1000 MT	Sep 12, 2024
Sri Lanka	Epsom salt	1.00 MT	Aug 26, 2024
Pakistan	Magnesium sulfate	1 20' Fcl	Aug 22, 2024
Egypt	magnesium sulfate heptahydrate (Liquide)	1.00 TON	Aug 6, 2024
Russia	MAGNESIUM SULPHATE HEPTAHYDRATE	1 20' Fcl	Jun 24, 2024
Russia	Magnesium sulfate	60 MT	Mar 2, 2024
Vietnam	Magnesium Sulfate Heptahydrate	3.00 TON	Feb 28, 2024
India	Magnesium Sulphate Heptahydrate (White)	10.00 MT	Jan 24, 2024
Egypt	Magnesium Sulphate Heptahydrate	1000 MT	Jan 12, 2024
Ghana	Magnesium sulfate	1 MT	Nov 30, 2023
Pakistan	Magnesium Sulphate Heptahydrate	1 KG	Jan 22, 2026

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