Substance Details
Classification information
(1)UN Number
1408
(2)Proper Shipping Name
FERROSILICON with 30% or more but less than 90% silicon
(3)Class or division
4.3
(4)Subsidiary risks
6.1
(5)Packing group
III
(6)Special provisions
(7a)Limited quantities
1 kg
(7b)Excepted quantities
(15)EmS
Packing Information
(8)Packing instructions
(9)Packing provisions
PP20 PP100
(10)IBC Instructions
(11)IBC Provisions
B4 B6
(13)Tank instructions
(14)Tank provisions
TP33
Stowage and Segregation Information
(16a)Stowage and handling
Category: A
SW2
Clear of living quarters.
SW5
If under deck, stow in a mechanically ventilated space.
H1
Keep as dry as reasonably practicable.
(16b)Segregation
SG26
In addition: from goods of classes 2.1 and 3 when stowed on deck of a containership a minimum distance of two container spaces athwartship shall be maintained, when stowed on ro-ro ships a distance of 6 m athwartship shall be maintained.
SG35
Stow "separated from" acids.
SG36
Stow "separated from" alkalis.
Properties and Observations

In contact with moisture, water, alkalis or acids, may evolve hydrogen, a flammable gas, which may form explosive mixtures with air, and also arsine and phosphine, which are highly toxic gases. These gases are evolved in proportions which, under mechanically ventilated conditions, make the poison hazard by far predominant over the explosion hazard. The rate of gas evolution is greatest from freshly broken surfaces, so is liable to increase whenever the cargo is disturbed, such as, during loading. Toxic if swallowed, by skin contact or by vapour inhalation.

Package labels and marks
4.3 6.1
For marking and labelling of packages, including IBCs see section 5.2.