Tanks shall bear in addition to the particulars prescribed in 6.8.2.5.2, the words: "Do not open during carriage. Gives off flammable gases on contact with water".

NOTE: These particulars shall be in an official language of the country of approval, and also, if that language is not English, French or German, in English, French or German, unless any agreements concluded between the countries concerned in the transport operation provide otherwise.