Substance Details
Classification information
(1)UN Number
2578
(2)Proper Shipping Name
PHOSPHORUS TRIOXIDE
(3)Class or division
8
(4)Subsidiary risks
-
(5)Packing group
III
(6)Special provisions
-
(7a)Limited quantities
5 kg
(7b)Excepted quantities
(15)EmS
Packing Information
(8)Packing instructions
(9)Packing provisions
-
(10)IBC Instructions
(11)IBC Provisions
B3
(13)Tank instructions
(14)Tank provisions
TP33
Stowage and Segregation Information
(16a)Stowage and handling
Category: A
SW1
Protected from sources of heat.
H2
Keep as cool as reasonably practicable.
(16b)Segregation
-
Properties and Observations

Colourless crystals or white deliquescent powder. Melting point: 23°C. Reacts with water, evolving heat and at normal temperatures phosphoric acid, but at higher temperatures phosphine, a highly toxic gas. In the presence of moisture, corrosive to most metals. Causes burns to skin, eyes and mucous membranes.

Package labels and marks
8
For marking and labelling of packages, including IBCs see section 5.2.