What is the difference between the heptahydrate and monohydrate forms of Magnesium Sulphate?

Heptahydrate contains seven water molecules per formula unit and appears as clear crystals, while monohydrate has only one and is a white powder. Heptahydrate is the most common form for agricultural fertilizers and bath salts, whereas monohydrate is preferred in pharmaceuticals and certain chemical processes because it has a higher magnesium concentration by weight. The monohydrate form is more stable in humid conditions and less prone to caking than the heptahydrate.

Which suppliers produce Magnesium Sulphate in China?

Production is concentrated in regions with access to magnesium ore deposits or sulfuric acid sources, such as Shandong and Hebei provinces. Suppliers range from large chemical manufacturers who produce the raw material from magnesite to smaller processors who import crude material and refine it to specific purity standards. Buyers should distinguish between primary producers and secondary traders, as primary producers offer more consistent batch-to-batch quality for technical specifications.

How should Magnesium Sulphate be stored to prevent degradation?

Magnesium Sulphate absorbs moisture from the air, so it must be stored in a dry, well-ventilated warehouse with pallets raised off the floor. Exposure to humidity causes the crystals to dissolve and cake into solid blocks, making them difficult to handle and dissolve. Storage areas should be protected from rain and direct sunlight, and bags should be sealed immediately after opening to maintain product flowability.

What specific test confirms the magnesium content in Magnesium Sulphate?

Complexometric titration using EDTA is the standard method for determining magnesium ion concentration in Magnesium Sulphate samples. This test involves dissolving a precise amount of the sample and titrating it with a standardized ethylenediaminetetraacetic acid solution until a color change indicates the endpoint. The result provides the exact percentage of magnesium, which is critical for buyers calculating dosage rates in fertilizer or pharmaceutical formulations.

Why do two quotes for Magnesium Sulphate resist comparison?

Quotes often differ because they specify different hydrate forms, such as heptahydrate versus monohydrate, which have different magnesium concentrations and prices. Packaging costs also vary significantly between loose bulk, small bags, and large jumbo bags. Additionally, some quotes may include only the product cost while others include inland transportation to the port, making the final delivered price difficult to compare without a detailed breakdown of terms and specifications.

What question does an experienced buyer ask about Magnesium Sulphate purity?

An experienced buyer asks for the specific heavy metal limits, particularly for lead, arsenic, and mercury, rather than just the general purity percentage. General purity numbers can mask trace impurities that are critical for food or pharmaceutical applications. Buyers also ask about the source of the magnesium, as impurities can vary depending on whether the raw material comes from magnesite ore or seawater extraction.

How is the particle size of Magnesium Sulphate measured?

Particle size is typically measured using sieve analysis, where a sample is passed through a stack of sieves with specific mesh sizes. The distribution of particles across these sieves determines the product's flowability and dissolution rate. For agricultural use, a wider range of particle sizes may be acceptable, while pharmaceutical applications often require a narrow, specific mesh range to ensure consistent mixing and dosing.

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Magnesium Sulphate from China - Chemicals & Allied Products Listings

Browse Magnesium Sulphate product listings from China on Global Trade Plaza, a B2B marketplace where importers and wholesale buyers connect with sellers, post their buying requirements and trade directly.

This page holds the 19 Magnesium Sulphate listings filed from China, spread across 13 companies out of 129 worldwide. A Magnesium Sulphate listing states its grade, its pack size and its order minimum; none of the 19 rows repeats another.

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Elite member

Sodium Metabisulphite Na2S2O5

Commodity: Sodium Metabisulphite Molecular formula:Na2S2O5 Molecule We.....show more

Origin - Not-available
MOQ - 1000 pieces
Type - Not-available
Payment - Not-available
Price - 320

Lianyungang Huaihua International Trade Co., Ltd.

(5.0)

0 Points
China

Business type -Not-available

Elite member

Aluminium Sulphate

Product Name:Aluminium sulphate Molecular Formula:AL2(SO4)3 Hs Code: 2.....show more

Origin - Not-available
MOQ - 1000 pieces
Type - Not-available
Payment - Not-available
Price - 180

Lianyungang Huaihua International Trade Co., Ltd.

(5.0)

0 Points
China

Business type -Not-available

Basic member

Ammonium Sulphate fertilizer

Ammonium Sulphate 21% Fertilizer Ammonium sulphate 21% fertilizer is a.....show more

Origin - China
MOQ - 1000 pieces
Type - Manufacturer | Wholesaler | Trader
Payment - T/T | L/C | D/P
Price - 300

Hans Corporation Limited

(4.5)

80 Points
China

Business type -Manufacturer | Wholesaler | Trader

Basic member

ammonium sulphate, fertilizer

Items Specification Appearance White crystal or granule Total Nitrogen.....show more

Origin - China
MOQ - 1000 pieces
Type - Manufacturer
Payment - T/T | L/C
Price - 220

SHANDONG GUANSHENG NEW MATERIAL TECHNOLOGY CO., LTD.

(3.0)

80 Points
China

Business type -Manufacturer

Basic member

99.5% Heptapydrate Magnesium Sulphate

Magnesium Sulfate is made of natural magnetite and sulfuric acid. It i.....show more

Origin - Not-available
MOQ - 1000 pieces
Type - Not-available
Payment - Not-available
Price - 99 - 118

Pingxiang Vitalforce Firm

(0.0)

0 Points
China

Business type -Not-available

Basic member

Dimethyl Sulfide(DMS)

Dimethyl sulfide is the simplest sulfide compound. The structure and p.....show more

Origin - China
MOQ - 1000 pieces
Type - Suppliers
Payment - T/T
Price - 1

山东旭晨化工科技有限公司

(3.0)

240 Points
China

Business type -Suppliers

Basic member

Monosodium Glutamate

Monosodium glutamate (MSG) is a flavor enhancer often added to restaur.....show more

Origin - China
MOQ - 1000 pieces
Type - Trader | Distributor
Payment - T/T | L/C
Price - $500/MT

Mond Star International Trading Co., Ltd

(3.5)

170 Points
China

Business type -Trader | Distributor

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Frequently asked questions

What are the current global market trends for Magnesium Sulphate products?

Global Trade Plaza actively tracks the evolving trends within the Magnesium Sulphate industry, delivering regular updates on market dynamics, shifts in supply and demand, and emerging opportunities. Stay informed through our Global & AI Chat Support.

What are the specifications and quality standards for the Magnesium Sulphate products you offer?

Global Trade Plaza ensures that all Magnesium Sulphate products listed on the Global Trade Plaza B2B Platform adhere to internationally recognized specifications and quality standards. Detailed product specifications and quality certifications are available for each product.

Do you have the capacity to provide large quantities of Magnesium Sulphate products on a consistent basis?

Global Trade Plaza collaborates with a network of reputable suppliers capable of fulfilling both large and consistent quantities of Magnesium Sulphate products. Global Trade Plaza B2B Platform facilitates seamless transactions for such requirements.

Can you share information about the origin and source of your Magnesium Sulphate products?

Transparency is key. Detailed information about the origin and source of each Magnesium Sulphate product, inclusive of refinery specifics and production locations, is meticulously provided to buyers.

Are you able to offer both spot purchases and long-term supply contracts for Magnesium Sulphate products?

Indeed, Global Trade Plaza caters to both spot purchases and long-term supply contracts for Magnesium Sulphate products, addressing the diverse requirements of our valued users.