Magnesium silicide

Combination packagings consisting of outer fiber drums or plywood drums, with inner plastic packagings, are not authorized for transportation by aircraft.

Browse special provision A19

Plastic bags as inner receptacles of combination packagings are not authorized for transportation by aircraft.

Browse special provision A20

_{Authorized IBCs:} Metal (11A, 11B, 11N, 21A, 21B, 21N, 31A, 31B and 31N); Rigid plastics (11H1, 11H2, 21H1, 21H2, 31H1 and 31H2); Composite (11HZ1, 11HZ2, 21HZ1, 21HZ2 and 31HZ1); Wooden (11C, 11D and 11F).<br>_{Additional Requirement:} Liners of wooden IBCs must be sift-proof.

Browse special provision IB7

When IBCs other than metal or rigid plastics IBCs are used, they must be offered for transportation in a closed freight container or a closed transport vehicle.

Browse special provision IP2

When transported by vessel, flexible, fiberboard or wooden IBCs must be sift-proof and water-resistant or be fitted with a sift-proof and water-resistant liner.<br>Large outer packagings:<br>Large outer packagings:<br>§ 178.275(d)(2)<br>§ 178.275(d)(3)<br>§ 178.275(d)(2)<br>§ 178.275(d)(3)<br>Prohibited<br>§ 178.275(d)(2)<br>§ 178.275(d)(3)<br>Prohibited<br>Prohibited for liquids.<br>Prohibited<br>§ 178.275(d)(3)<br>§ 178.275(d)(3)<br>Prohibited<br>Prohibited<br>§ 178.275(d)(3)<br>§ 178.275(d)(3)<br>§ 178.275(d)(3)<br>§ 178.275(d)(3)<br>Prohibited<br>Prohibited<br>Prohibited for liquids. § 178.275(d)(2).

Browse special provision IP21

<table class="table table-bordered table-condensed ushmr-sp-table"><tr><th>Minimum test pressure (bar)</th><td>2.65</td></tr><tr><th>Minimum shell thickness</th><td>§ 178.274(d)(2)</td></tr><tr><th>Pressure-relief requirements</th><td>Normal</td></tr><tr><th>Bottom opening requirements</th><td>§ 178.275(d)(2)</td></tr></table>

Browse special provision T3

The portable tank instruction assigned for this substance applies for granular and powdered solids and for solids which are filled and discharged at temperatures above their melting point which are cooled and transported as a solid mass. Solid substances transported or offered for transport above their melting point are authorized for transportation in portable tanks conforming to the provisions of portable tank instruction T4 for solid substances of packing group III or T7 for solid substances of packing group II, unless a tank with more stringent requirements for minimum shell thickness, maximum allowable working pressure, pressure-relief devices or bottom outlets are assigned in which case the more stringent tank instruction and special provisions shall apply. Filling limits must be in accordance with portable tank special provision TP3. Solids meeting the definition of an elevated temperature material must be transported in accordance with the applicable requirements of this subchapter.

Browse special provision TP33

Non-bulk packagings must be hermetically sealed.

Browse special provision W31

Non-bulk bags are not allowed.

Browse special provision W40

B

Stowage category “B” means

• (i) The material may be stowed “on deck” or “under deck” on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and
• (ii) “On deck only” on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.

Source: 49 CFR §172.101(k)