the function of packaging
To prevent rain and sunshine, moist air and impurities contact, chemical reaction;
Reduce the collision, the transport in the process of vibration, friction and extrusion, to ensure safe transportation;
Prevent cargo leakage, evaporation, and incompatible goods contact accident;
Convenient loading and unloading, handling and storage.

packaging category

All dangerous goods except first, 2, 6.2 and 7 kinds of outside, according to the dangerous degree of different transport packaging for three grade:
I packing: suitable for built-in highly dangerous goods;
II packing: suitable for built-in moderate dangerous goods;

III packing: suitable for built-in low dangerous goods.

The general requirements of packaging adaptation;
Packaging should have a certain strength, can withstand the general risk of waterway transport;
Packing seal should be accord with the nature of dangerous goods packed;
Proper gasket between the inner, outer packing;
Packing should be able to withstand temperature, humidity change within a certain range;
Packing weight, specifications and types, should facilitate the handling, transportation and storage (according to "IMDG" provisions, packing the maximum capacity of 450 litres, the maximum weight for 400kg)

Labeling and marking of packages
Each loaded with dangerous goods package, durable marker should display its contents of the proper shipping name, if the UN corresponding number, should also be marked.
All packages with dangerous goods, should show its built-in durability of dangerous goods characteristic symbol. Symbol display pack member, in accordance with the provisions of the "IMDG", immersed in seawater for three months, do not fall off, was still legible text patterns.
Logo size: package flags member shall not be less than 100X100mm
Container and can be marked on the portable tank shall not be less than 250X250mm
Method of use: Box: mark on both ends; barrel: at the cover or the barrel body; container: located in box four side, side mark should normally appear below left in the main mark.

Package type specifies the code and markup
Composite packaging 1-- drum 2-- wooden barrel 3-- tank 4-- box 5-- bag 6--
Packaging materials (represented by the Latin alphabet)
A-- B-- steel aluminum C-- natural wood plywood D-- F-- regenerated wood fiber board H-- G-- plastic L-- textile M-- paper, the multilayer P-- glass, porcelain and stoneware
Packing mark content
(1) the UN packaging symbol;
(2) code package;
(3) the wrapper class (X for I, II, III class package; Y for II, III class Z class for III packaging; packaging) and relative density of liquid (solid kg represents the maximum total);
(4) with the experimental pressure of 10Kpa is accurate to the said hydraulic test pressure of inner packaging through (solid with "S");
(5) packaging manufacturing / or repair after year two digits (1H and 3H shall be marked with the month);
(6) packaging and / or repair the approved country (in vehicle recognition the international sign);
(7) the factory / repair factory code or unauthorized use code.
(8) as is being repaired, should also have "R" and "L, as applicable".