Understanding the Two Main Meanings of Tabela ONU
The term tabela ONU, or ONU table in English, can refer to two distinct but equally important official documents maintained by the United Nations system. The context in which the term is used determines which table is intended. For professionals involved in international logistics, chemical handling, and hazardous materials transport, the most common reference is the UN Number Table. This table assigns unique four-digit numbers to specific hazardous substances and objects, enabling safe and standardized transport across borders. For legal scholars, diplomats, and international relations specialists, the UN Treaty Series table serves as the definitive repository of international treaties and agreements registered with the UN Secretariat. Both tables serve critical functions in their respective domains, and understanding the differences between them is essential for anyone working with UN documentation.
The practical importance of these tables cannot be overstated. The UN Number Table directly impacts the daily operations of shipping companies, chemical manufacturers, emergency response teams, and regulatory authorities worldwide. Without this standardized numbering system, the international transport of dangerous goods would be chaotic and significantly more dangerous. Similarly, the UN Treaty Series table provides legal certainty and transparency in international law, allowing states and organizations to verify treaty obligations and access the full text of agreements. This article will explore both meanings of the term tabela ONU in detail, providing clear explanations of their structure, use, and accessibility.
The UN Number Table for Dangerous Goods Transport
The UN Number Table is the most widely used practical reference for anyone involved in the transport of hazardous materials. It is maintained by the UN Committee on the Transport of Dangerous Goods and is codified in various international regulations including ADR for road transport in Europe, the IMDG Code for maritime transport, and the ICAO Technical Instructions for air transport. Each entry in the table consists of a four-digit UN number, the proper shipping name of the substance or object, the hazard class or division, subsidiary risks, packing group, and other relevant information for safe handling and emergency response.

The primary purpose of the UN Number Table is to identify hazardous substances and objects for emergency response and safe handling during international transport. When a dangerous good is being shipped, the UN number must appear on the transport document, the package, and often on the vehicle or container. This allows emergency responders to quickly identify the hazards associated with a particular substance and take appropriate action in the event of an accident or spill. For example, UN 1203 is the number assigned to gasoline, while UN 1263 is assigned to paint. These numbers are recognized globally, meaning that a firefighter in Brazil and a firefighter in Germany will both know what UN 1203 refers to without needing to read the local language.
Structure and Content of the UN Number Table
The UN Number Table is organized sequentially by UN number, from 0004 to about 3500. Each entry includes several key pieces of information that are essential for safe transport. Understanding the structure of the table is important for anyone who needs to look up a substance or verify shipping requirements. The table typically includes the following columns:
- UN number: the four-digit identifier assigned to the substance or object
- Proper shipping name: the official name that must appear on shipping documents and packages
- Class or division: the hazard class, such as Class 3 for flammable liquids or Class 6.1 for toxic substances
- Subsidiary risk: any additional hazards beyond the primary class
- Packing group: indicates the degree of danger (I for great danger, II for medium, III for minor)
- Special provisions: additional requirements for specific substances
- Limited quantity and excepted quantity provisions: allowances for small amounts
To illustrate the structure more clearly, here is a simplified example of how entries appear in the UN Number Table. Note that the actual table used for compliance purposes contains many more columns and details.

| UN Number | Proper Shipping Name | Class | Packing Group | Subsidiary Risk |
|---|---|---|---|---|
| 1203 | Gasoline | 3 | II | None |
| 1263 | Paint | 3 | III | None |
| 1830 | Sulfuric acid | 8 | II | None |
| 2814 | Infectious substance, affecting humans | 6.2 | I | None |
| 3480 | Lithium ion batteries | 9 | II | None |
The table above shows just a few examples of the thousands of entries in the UN Number Table. Each number is unique and permanently assigned to a specific substance or group of substances. When new substances are developed or new hazards are identified, the UN Committee assigns new numbers and updates the table accordingly. The table is revised every two years to reflect changes in technology, industry practices, and safety requirements. This regular updating process ensures that the table remains relevant and useful for the international community.
How the UN Number Table is Used Across Different Transport Modes
The UN Number Table is not a standalone document but rather the foundation for multiple regulatory frameworks that govern the transport of dangerous goods by different modes. For road transport in Europe, the ADR agreement incorporates the UN numbers and adds specific requirements for vehicles, tunnels, and documentation. For maritime transport, the International Maritime Dangerous Goods Code uses the same UN numbers and adds provisions for stowage, segregation, and shipboard emergency response. For air transport, the ICAO Technical Instructions and the IATA Dangerous Goods Regulations rely on the same UN numbering system while adding specific limitations on quantities and packaging for aircraft.
This harmonization means that a shipment of a hazardous substance can move seamlessly across different modes of transport and across international borders without requiring reclassification or re-documentation at each stage. A container of paint (UN 1263) shipped from a factory in Germany to a customer in Brazil will carry the same UN number on the truck, the ship, and the train. This consistency reduces administrative burden and enhances safety. For emergency responders, the UN number is the key to accessing information about the substance involved in an incident. Many countries provide online databases and mobile applications that allow users to look up UN numbers and quickly obtain information about hazards, protective measures, and initial actions.

For those seeking the official source of the UN Number Table, the United Nations Economic Commission for Europe publishes the UN Model Regulations, which contain the complete table. The regulations are available online and are updated regularly. A detailed explanation of the UN Number Table and its application in the Brazilian context can be found through resources provided by Cidesp, which offers guidance on compliance with international dangerous goods regulations. These resources are invaluable for companies and individuals who need to understand and apply the UN numbering system correctly.
The UN Treaty Series Table
The second meaning of the term tabela ONU relates to the United Nations Treaty Series, which is the official collection of treaties and international agreements registered with the United Nations Secretariat. Under Article 102 of the UN Charter, every treaty and international agreement entered into by any member state of the UN must be registered with the Secretariat and published by it. The UN Treaty Series therefore serves as the definitive legal record of international treaty obligations. The table format of the UN Treaty Series provides a structured index of all registered treaties, including the title, dates of signature and entry into force, parties, and registration number.
The UN Treaty Series has been published continuously since 1945 and currently contains over 300,000 treaties in their original languages along with translations into English and French where available. The series is organized chronologically by registration date, but the database can be searched by keyword, party, date, or subject matter. For legal professionals, diplomats, and researchers, the UN Treaty Series is an indispensable resource for verifying the status of international agreements and accessing the full text of treaties. The table format makes it easy to browse recent registrations and track the development of international law over time.

The UN Office of Legal Affairs maintains the official database of the UN Treaty Series, which is accessible online. The database allows users to search for treaties by title, party, date, or registration number. It also provides information on the status of treaties, including which states have signed, ratified, or acceded to each agreement. This information is critical for understanding the legal obligations that exist between states and for ensuring compliance with international law. The UN Treaty Series is also available in print volumes in major libraries around the world, though the online database has become the primary access point for most users.
Accessing and Using the UN Treaty Series Online
Accessing the UN Treaty Series table online is straightforward through the official website maintained by the UN Office of Legal Affairs. The database is freely available and provides powerful search tools that allow users to filter by various criteria. Users can search by treaty title, by the names of the parties involved, by the date of signature or entry into force, or by the registration number assigned by the UN. The results are displayed in a table format showing the key details of each treaty, with links to the full text. This structure makes it easy to quickly identify relevant treaties and access the detailed information needed for legal research or compliance purposes.
The online database also includes information on the status of each treaty, including which states are parties and whether any reservations or declarations have been made. This is particularly useful for diplomats and legal advisors who need to determine whether a given treaty is in force for their country. The UN Treaty Series table is updated continuously as new treaties are registered, ensuring that the database remains current. For those who prefer to work with printed materials, the UN also publishes cumulative indexes and monthly statements of treaties registered, which provide a table-based overview of recent additions to the series. Academic institutions and research organizations can also access the UN Treaty Series through university libraries and legal databases that subscribe to the service.

Why Clear Online Table Solutions Matter
Whether referring to the UN Number Table for dangerous goods transport or the UN Treaty Series table for international agreements, the importance of clear online table solutions cannot be overstated. In both cases, the table format provides a structured and efficient way to navigate large volumes of data. For dangerous goods professionals, having quick access to the correct UN number and associated information can mean the difference between a safe shipment and a catastrophic incident. For legal professionals, the ability to search and browse the UN Treaty Series table efficiently is essential for conducting thorough legal research and ensuring compliance with international obligations.
The move toward online digital solutions has made both tables more accessible than ever before. Instead of having to consult bulky printed volumes or rely on secondhand information, users can now access official databases directly from their computers or mobile devices. This shift has improved accuracy and reduced the risk of errors caused by outdated or incomplete information. As technology continues to evolve, we can expect even more sophisticated tools to emerge, including application programming interfaces that allow direct integration of UN table data into logistics software and legal research platforms. The clear presentation of these tables in online formats ensures that users can find the information they need quickly and confidently, regardless of their location or language.
References
UN Committee on the Transport of Dangerous Goods. United Nations Economic Commission for Europe. Available at: unece.org/en/transport/dangerous-goods
UN Office of Legal Affairs. United Nations Treaty Series Database. Available at: treaties.un.org





