Specification for UN Number and Packing Grade for Styrene Shipping?

Specification for UN Numbers and Packing Grades for Styrene Shipping

in the global chemical industry, styrene (Styrene) is an important basic chemical, widely used in plastics, rubber, fiber and resin manufacturing. Due to its flammable and volatile characteristics, styrene has a high safety risk during transportation. Therefore, understanding the United Nations number (UN number) and packing grade specifications for styrene shipping is essential to ensure safe and compliant shipping operations.

Hazard Characteristics and Classification of 1. Styrene

styrene is a colorless, flammable liquid with a special fragrance. It is not only toxic to human body, but also may cause explosion or fire accident. According to international transport regulations, styrene is classified as a flammable liquid class 3 dangerous goods. Its dangerous characteristics are mainly reflected in the following aspects:

1. flammability styrene has a low flash point (about -11°C) and is easily ignited at room temperature.
2. anesthetic high concentrations of styrene vapor will have an anesthetic effect on the central nervous system, which may cause dizziness, nausea and other uncomfortable symptoms.
3. Explosion risk: In a confined space, when styrene vapor is mixed with air to reach a certain concentration, it will explode in case of open flame or electrostatic spark.

It is based on these hazardous characteristics that styrene needs to be packaged and labeled in strict accordance with relevant regulations in international transportation.

United Nations No. 2. the maritime transport of styrene

the UN Number is the unique code used to identify specific dangerous goods in the international transport of dangerous goods. The United Nations number for styrene is UN 1303. The meaning of this number is as follows:

• UN 1303: This is the globally uniform number for styrene when transported as dangerous goods, which is used to clearly identify the dangerous nature of the goods in shipping documents, labels and markings.

In the process of sea transportation, carriers, port Authorities and interested parties need to quickly identify the dangerous category of styrene according to the UN 1303 number and take corresponding safety measures.

Specification for packing grades of 3. styrene

according to international regulations on the transport of dangerous goods (such as the International Maritime Dangerous Goods Code (IMDG Code)), the packaging grade of styrene is mainly determined by its dangerous characteristics, mode of transport and cargo form. The following are common packing grade specifications for styrene marine transportation:

1. Packaging classification

• type I packing (most stringent): Suitable for high-risk goods, requiring the use of high-strength, corrosion-resistant packaging materials, such as steel drums or special plastic containers.
• Class II Packaging: Suitable for moderately dangerous goods, usually using ordinary steel drums or composite plastic drums.
• Type III packing (minimum): Suitable for low-risk goods, usually using cartons or wooden boxes, but need to meet the basic requirements of shock and leak.

Since styrene is a flammable liquid, it is usually packaged in Class I or Class II packaging to ensure safety during transportation.

2. Packaging requirements

• material selection: The packaging container should be made of corrosion-resistant and leak-proof materials, such as steel, aluminum or food-grade plastics.
• Labeling and identification: The packaging shall be clearly marked with the name of "styrene", UN number (UN 1303), hazard class (e. g. "flammable liquid") and relevant warning signs.
• Sealing method: Liquid styrene must use a lid or valve with good sealing performance to ensure that there is no risk of leakage during transportation.

3. Special precautions

• temperature control requirements: Styrene should avoid high temperature during transportation to prevent vapor volatilization and polymerization.
• isolated storage styrene cannot be mixed with other oxidants or strong alkaline substances, and should be stored separately and away from fire sources.

Safety measures for the 4. of styrene by sea

in addition to the packing specifications, the following safety measures are to be followed by the shipment of styrene by sea:

1. cargo Information Declaration: The carrier shall clearly mark the United Nations number (UN 1303) and hazard class of styrene in the shipping documents.
2. Personnel training personnel involved in the transport (such as stevedores, drivers and crew) shall be trained in the transport of dangerous goods to understand the physical and chemical properties of styrene and emergency treatment measures.
3. Emergency preparedness: The transport ship only needs to be equipped with corresponding fire fighting and first aid equipment to deal with possible fire or leakage accidents.
4. prevention and control of environmental pollution: Styrene leakage may cause pollution to the marine environment, so strict leakage prevention measures should be taken and corresponding emergency response plans should be formulated.

5. Summary and Compliance Recommendations

styrene is an important chemical raw material, and its shipping process involves complex dangerous goods transportation regulations. Clarifying the United Nations number (UN 1303) and packaging grade requirements for styrene is the basis for ensuring safe and compliant transport operations. In actual transportation, the relevant parties should strictly abide by international laws and regulations, reasonably select packaging materials, strengthen personnel training, and formulate perfect emergency plans.

For enterprises, it is recommended to consult a professional dangerous goods transport service provider or regulatory expert before transportation to ensure that all operations comply with international and regional requirements. Only through scientific and standardized transportation management can we effectively reduce transportation risks and ensure the safety of people, property and the environment.