Sodium hydroxide sea export process and precautions

Sodium hydroxide, also known as caustic soda and caustic soda, chemical formula is NaOH, is a kind of strong alkali with high corrosivity, generally white flake or particle, can be dissolved in water to form alkaline solution, also can be dissolved in methanol and ethanol. Sodium hydroxide has deliquescence, which can absorb water vapor in the air, and also absorb acid gases such as carbon dioxide and sulfur dioxide.


Sodium hydroxide is highly corrosive, solid or its solution can burn the skin, which can cause permanent injury (such as scar) to those without protective measures. If sodium hydroxide is exposed to the eyes directly, the serious may even cause blindness. Personal protective measures, such as rubber gloves, protective clothing and goggles, can greatly reduce the risk of contact with sodium hydroxide


Sodium hydroxide is widely used. It is used in the production of paper, soap, dye, rayon, oil refining, cotton finishing, coal tar product purification, food processing, wood processing and machinery industry.

Sodium hydroxide is widely used in the national economy, many industrial sectors need sodium hydroxide. The sectors that use sodium hydroxide most are chemical manufacturing, followed by papermaking, aluminum smelting, tungsten smelting, rayon, artificial cotton and soap manufacturing. In addition, in the production of dyes, plastics, chemicals and organic intermediates, the regeneration of old rubber, the electrolysis of metal sodium and water, and the production of inorganic salts, a large amount of caustic soda is also used in the production of borax, chromate, manganate, phosphate, etc. At the same time, sodium hydroxide is one of the important raw materials for the production of polycarbonate, super absorbent polymer, zeolite, epoxy resin, sodium phosphate, sodium sulfite and a large number of sodium salts.

Land Transportation Requirements

First of all, the source cannot be transported in aluminum or zinc cans, because sodium hydroxide is a strong base, and its solution will react with aluminum and zinc to form hydrogen gas, sodium metaaluminate or sodium metazincate

Second, seal and fill! Because if there is air, sodium hydroxide will deteriorate! Sodium carbonate and water are formed

Third, first flush nitrogen, oxygen and other protective gas into the tank, drain the air as much as possible, then add sodium hydroxide solution, slowly discharge the protective gas, and then seal the transportation.

Precautions For Sodium Hydroxide Export By Sea


Main hazard category: 8

UN: 1823

Package category: Class II package

HS Code: 281510000

Documents for sodium hydroxide export by sea

Booking power of attorney: in addition to the consignor and consignee information, the most important thing is to clearly describe the gross weight, net weight, packing form and inner packing of a single piece
(note that the dangerous goods export booking needs to be made ten days in advance. The dangerous goods booking data must be accurate and can not be changed.)

2.MSDS in English
MSDS (shipowners will focus on the physical and chemical properties and transportation items, which determine the nature of shipowners. They will naturally know how to focus on operation in transportation)
Note: sodium hydroxide belongs to category 8 dangerous goods, UN 1823, category II dangerous package certificate declaration form

With the power of attorney and MSDS, you can book the dangerous goods space. Generally two working days can be allocated.

3.Dangerous package certificate
(it mainly includes the performance sheet and the use certificate. The performance sheet is relatively simple and can be provided by the manufacturers that can make regular packaging. However, the use certificate is more complex, so it needs to go to the local Commodity Inspection Bureau of the factory to apply with the IMI identification and the performance sheet.)

4.Dangerous goods declaration
The next step is to declare dangerous goods. According to the requirements of different shipping companies and shipping agents, the declaration materials can be submitted according to the latest deadline before declaration. The dangerous goods declaration is mainly to review the package, so the most important document is the dangerous goods certificate.
Dangerous declaration materials: original dangerous package certificate, English MSDS, packing list, packing certificate, declaration power of attorney

5.Preparation for transportation and packing is an important part
This link can be divided into two operation modes: warehouse loading and factory gate Point Trailer
If it is loaded in the warehouse, you need to make a warehouse entry notice to confirm the delivery time to the warehouse with the customer
If the factory door point trailer is used, it should be transported by a fleet with dangerous goods qualification. The driver master must be an experienced old driver of dangerous goods vehicle, who can safely and timely complete the unloading.

6.Declare at customs
In addition to the routine customs declaration data, it should also be noted that sodium hydroxide belongs to the commodity subject to legal inspection, and commodity inspection must be provided for maritime export.

7.Bill of lading
After the ship leaves, take the bill of lading for payment, confirm with the consignee whether to issue the original bill of lading or telegraphic release bill of lading, and arrange the customs clearance and delivery after the ship arrives at the port of destination.
Sodium hydroxide belongs to 8 kinds of dangerous goods, which can be exported by LCL. However, it should be noted that it can not be mixed with 4 kinds of dangerous goods or acidic substances, and must strictly comply with the requirements for stowage and isolation of dangerous goods by LCL.

Post time: 15-07-21


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