Specification for UN Numbers and Packing Grades for Shipping of n-Butyl Acrylate?

Specification for n-butyl acrylate shipping by sea for UN number and packing class

With the increasing frequency of global trade, the maritime demand for hazardous chemicals is increasing, and n-butyl acrylate is an important chemical raw material, and its safety and compliance in the maritime process has attracted much attention. This paper will analyze the UN number and packaging grade specification of n-butyl acrylate in shipping in detail, and provide reference for relevant practitioners.

1. n-Butyl Acrylate Properties and Hazard

Butyl acrylate is a colorless liquid with a pungent odor, flammable and harmful to the environment. Based on its physical and chemical properties, n-butyl acrylate is classified as a flammable liquid category 3(Flash Point >23°C and <60°C) according to the International Code for the Transport of Dangerous Goods. Therefore, in the transport of dangerous goods, n-butyl acrylate is given a specific UN number, namely UN 3377.

2. UN Number Significance and Function

The UN number is an internationally unified dangerous goods numbering system used to identify various dangerous substances and articles. Each UN number corresponds to one or a class of dangerous goods, so that customs, transport authorities and relevant agencies can quickly identify the dangerous nature of the goods and transport requirements. In the case of n-butyl acrylate, the clear identification of the UN 3377 ensures that it is correctly classified and properly handled during shipping.

3. for n-Butyl Acrylate-Packing Grade Specification

According to the "International Maritime Dangerous Goods Code" (IMDG Code), the packaging grade of dangerous goods is divided into I, II, III three levels, different levels of packaging requirements apply to different levels of dangerous goods. n-Butyl acrylate belongs to Flammable Liquid Category 3 and is packaged as Class II according to the IMDG Code. This means that during transportation, n-butyl acrylate must be used in containers that meet Class II packaging standards, such as steel or aluminum packaging containers, which need to have good sealing properties and pressure resistance.

4. Packaging Materials Selection and Requirements

When selecting the packaging material, the chemical properties of n-butyl acrylate need to be considered, such as its corrosion to the packaging material and the chemical resistance of the packaging material. Commonly used packaging materials include steel drums, plastic drums, etc., and must meet the following requirements:

1. Leak -proof: The packaging container must have a good seal to prevent liquid leakage.
2. Compression: able to withstand shipping process may encounter vibration, extrusion and extreme temperature changes.
3. Label: the container must be posted a clear dangerous goods label, marked with UN number, dangerous category, transportation precautions and other information.

5. Shipping Declaration and Document Preparation

During the sea transportation of n-butyl acrylate, the relevant parties need to prepare perfect transportation documents, including:

1. Transport documents: including bills of lading, packing lists, cargo lists, etc.
2. Safety Data Sheet (MSDS): the need for a detailed description of n-butyl acrylate physical properties, risk, first aid measures and other content.
3. Dangerous goods declaration form: need to clearly mark UN number, packaging grade, cargo weight, volume and other information.

6. Summary and Compliance Recommendations

As a flammable liquid, n-butyl acrylate needs to be operated in strict accordance with the international dangerous goods transport rules in the process of shipping. The requirements for UN No. UN 3377 and Class II packaging reflect the strict control of the dangerous goods during transportation. In actual operation, practitioners should ensure that the packaging materials meet the standards, the transportation documents are complete, and pay close attention to the safety monitoring during the transportation of goods. Through compliance operation, it can not only ensure the safety of cargo transportation, but also avoid the legal risks and economic losses caused by illegal transportation.