Which diamond shape dangerous goods label is acceptable for mailing

When it comes to shipping dangerous goods, the diamond-shaped label is a crucial part of the process. The label must conform to the United Nations (UN) Recommendations on the Transport of Dangerous Goods and the International Civil Aviation Organization (ICAO) Technical Instructions for the Safe Transport of Dangerous Goods by Air.

For mailing, the acceptable diamond-shaped label depends on the mode of transportation and the type of dangerous goods being shipped. Here are some general guidelines:

For Air Transport (by Air Mail or Courier):

• The ICAO Technical Instructions require a diamond-shaped label with a black border and a yellow background, featuring the UN number and the proper shipping name of the dangerous good.
• The label must be at least 100 mm (3.9 in) square and have a minimum font size of 12 mm (0.47 in) for the UN number and 10 mm (0.39 in) for the proper shipping name.

For Land Transport (by Road or Rail):

• The UN Recommendations require a diamond-shaped label with a black border and a yellow background, featuring the UN number and the proper shipping name of the dangerous good.
• The label must be at least 100 mm (3.9 in) square and have a minimum font size of 12 mm (0.47 in) for the UN number and 10 mm (0.39 in) for the proper shipping name.

For Sea Transport (by Ocean):

• The International Maritime Organization (IMO) requires a diamond-shaped label with a black border and a yellow background, featuring the UN number and the proper shipping name of the dangerous good.
• The label must be at least 100 mm (3.9 in) square and have a minimum font size of 12 mm (0.47 in) for the UN number and 10 mm (0.39 in) for the proper shipping name.

In summary, for mailing, you should use a diamond-shaped label that conforms to the ICAO Technical Instructions for air transport, UN Recommendations for land transport, or IMO requirements for sea transport, depending on the mode of transportation and the type of dangerous goods being shipped.

Remember to always check with the relevant authorities, such as the US Postal Service or the International Air Transport Association (IATA), for specific requirements and regulations regarding the shipping of dangerous goods by mail.