How many tons of magnesium chloride can be loaded in 20ft and 40ft containers | Yuze magnesium chloride supplier

The magnesium chloride mentioned here refers to two commonly used hexahydrate magnesium chloride types: hexahydrate magnesium chloride flakes (acid-process magnesium chloride flakes and brine flakes) and magnesium chloride granules. They are mainly packed in 25kg small bags and 1000kg bulk FIBC bags.

1. Loading quantity of magnesium chloride flakes and granules for 20ft & 40ft containers

20GP (20ft general container)

· Magnesium chloride flakes:

· With pallets: 20 tons (safe loading for most shipping routes)

· Loose stacking without pallets: 24–25 tons (full volume loading. Confirm carrier weight limit in advance; overweight fines apply at some ports)

· Magnesium chloride granules (better flowability & higher bulk density):

· With pallets: 21–22 tons

· Loose stacking without pallets: 25–26 tons

40GP (40ft general container)

· Magnesium chloride flakes: 25–26 tons (standard upper limit for most foreign trade shipments)

· Magnesium chloride granules: 26–27 tons

40HQ (40ft high cube container, often referred to as 40ft container by many buyers)

· Magnesium chloride flakes: 26–27 tons

· Magnesium chloride granules: 27–28 tons

2. Factors affecting loading capacity of magnesium chloride flakes /magnesium chloride granules

1. Different production processes from magnesium chloride supplier. For magnesium chloride flakes, there are brine flakes, acid-synthesized flakes and by-product flakes. Though all called magnesium chloride flakes, they vary in size and thickness. Extra-thin, large flakes occupy more space and reduce loading weight within the fixed container volume.

2. Magnesium chloride is a dense heavy cargo. Weight limit, not container volume, is the main constraint on most shipping lines. Containers can theoretically hold 25–28 tons, while many carriers set 17.5 tons cap for 20GP and 22 tons for 40GP. Overweight shipments may incur surcharges or be rejected.

3. Carrier booking weight limits vary by shipping line & route. Vessels under joint service usually have stricter limits.

4. Pallet requirement. Wooden or plastic pallets take up internal space and reduce payload by 3–4 tons for 20GP. IPPC wooden pallets are mandatory for many buyers from North America, Canada and Mexico.

5. Destination road & trailer legal weight restrictions. US, Canada and Mexico are typical: 20GP net cargo is commonly capped at 21 tons. Even if space remains, local highway regulations ban overweight loads, leading to heavy fines or container detention. Rules are more relaxed for Europe and Southeast Asia.

Summary: The maximum load of magnesium chloride flakes or magnesium chloride granules is mostly restricted by destination trailer regulations and carrier weight limits. Loading capacity also depends on pallet usage and product form (magnesium chloride flakes or magnesium chloride granules).