Molten liquid with a persistent odour. Melting point: 80 C. ° Evolves flammable vapours. As the melting point of naphthalene approximates very closely its flashpoint, care should be taken to avoid all possible causes of ignition. Contact between water and molten naphthalene above 110 C must be avoided, as the addition of ° water will cause violent foaming or even an explosion.
These portable tank instructions apply to liquid and solid substances of class 1 and classes 3 to 9. The general provisions of section 4.2.1 and the requirements of section 6.7.2 shall be met. The instructions for portable tanks with FRP shells apply to substances of classes or divisions 1, 3, 5.1, 6.1, 6.2, 8 and 9. Additionally, the provisions of chapter 6.10 apply to the portable tanks with FRP shells.
T1 · Selected instruction · IMDG 42-24
Portable tank instruction
Minimum test pressure (bar)
Minimum shell thickness (in mm – reference steel) (see 6.7.2.4)
Pressure relief provisionsa (see 6.7.2.8)
Bottom opening provisionsb (see 6.7.2.6)
T1
1.5
See 6.7.2.4.2
Normal
See 6.7.2.6.2
a When the word “Normal” is indicated, all the provisions of 6.7.2.8 apply except for 6.7.2.8.3.
b When this column indicates “not allowed”, bottom openings are not permitted when the substance to be transported
is a liquid (see 6.7.2.6.1). When the substance to be transported is a solid at all temperatures encountered under normal
conditions of transport, bottom openings conforming to the provisions of 6.7.2.6.2 are authorized.
Source PDF pages：264 · 42-24
Extracted source text
S T1 – T22 These portable tank instructions apply to liquid and solid substances of class 1 and classes 3 to 9. The general provisions of section 4.2.1 and the requirements of section 6.7.2 shall be met. The instructions for portable tanks with FRP shells apply to substances of classes or divisions 1, 3, 5.1, 6.1, 6.2, 8 and 9. Additionally, the provisions of chapter 6.10 apply to the portable tanks with FRP shells. Minimum shell thickness Pressure relief Bottom opening (in mm – reference provisionsa provisionsb instruction pressure (bar) steel) (see 6.7.2.8) (see 6.7.2.6) (see 6.7.2.4) 1.5 See 6.7.2.4.2 Normal See 6.7.2.6.2
The maximum degree of filling (in%) for solids transported above their melting points and for elevated temperature liquids shall be determined in accordance with 4.2.1.9.5.
IMDG Code 42-24 · English source text
Labels and marks
Reference preview for Entry 1 · Packing group III. Confirm the cargo classification and any conditions in the special provisions.
