IBC520 PACKING INSTRUCTION IBC520
This instruction applies to organic peroxides and self-reactive substances of type F.

The IBCs listed below are authorized for the formulations listed, provided the general provisions of 4.1.1, 4.1.2 and 4.1.3 and special provisions of 4.1.7.2 are met. The formulations not listed in 2.4.2.3.2.3 and 2.5.3.2.4 but listed below may also be transported packed in accordance with packing method OP8 of packing instruction P520 of 4.1.4.1, with the same control and emergency temperatures, if applicable.

For formulations not listed below, only IBCs which are approved by the competent authority may be used (see 4.1.7.2.2).
UN No. Organic peroxide Type of IBC Maximum quantity (litres) Control temperature Emergency temperature
3109 ORGANIC PEROXIDE TYPE F, LIQUID
tert-Butyl cumyl peroxide 31HA1 1000
tert-Butyl hydroperoxide, not more than 72% with water 31A
31HA1		 1250
1000
tert-Butyl peroxyacetate, not more than 32% in diluent type A 31A
31HA1		 1250
1000
tert-Butyl peroxybenzoate, not more than 32% in diluent type A 31A 1250
tert-Butyl peroxy-3,5,5-trimethylhexanoate, not more than 37% in diluent type A 31A
31HA1		 1250
1000
Cumyl hydroperoxide, not more than 90% in diluent type A 31HA1 1250
Dibenzoyl peroxide, not more than 42% as a stable dispersion 31H1 1000
Di-tert-butyl peroxide, not more than 52% in diluent type A 31A
31HA1		 1250
1000
1,1-Di-(tert-butylperoxy)cyclohexane, not more than 37% in diluent type A 31A 1250
1,1-Di-(tert-butylperoxy)cyclohexane, not more than 42% in diluent type A 31H1 1000
Dilauroyl peroxide, not more than 42%, stable dispersion, in water 31HA1 1000
Isopropylcumyl hydroperoxide, not more than 72% in diluent type A 31HA1 1250
p-Menthyl hydroperoxide, not more than 72% in diluent type A 31HA1 1250
Peroxyacetic acid, stabilized, not more than 17% 31H1
31H2
31HA1
31A		 1500
1500
1500
1500
2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane, not more than 52% in diluent type A 31HA1 1000
3,6,9-Triethyl-3,6,9-trimethyl-1,4,7- triperoxonane, not more than 27% in diluent, type A 31HA1 1000
3110 ORGANIC PEROXIDE TYPE F, SOLID
Dicumyl peroxide 31A
31H1
31HA1		 2000
3119 ORGANIC PEROXIDE TYPE F, LIQUID, TEMPERATURE CONTROLLED
tert-Amyl peroxy-2-ethylhexanoate, not more than 62% in diluent type A 31HA1 1000 +15°C +20°C
tert-Amyl peroxypivalate, not more than 32% in diluent type A 31A 1250 +10°C +15°C
tert-Amyl peroxypivalate, not more than 42% as a stable dispersion in water 31HA1 1000 +0°C +10°C
tert-Butyl peroxy-2-ethylhexanoate, not more than 32% in diluent type B 31HA1
31A		 1000
1250		 +30°C
+30°C		 +35°C
+35°C
tert-Butyl peroxyneodecanoate, not more than 32% in diluent type A 31A 1250 0°C +10°C
tert-Butyl peroxyneodecanoate, not more than 42%, stable dispersion, in water 31A 1250 -5°C +5°C
tert-Butyl peroxyneodecanoate, not more than 52%, stable dispersion, in water 31A 1250 -5°C +5°C
tert-Butyl peroxypivalate, not more than 27% in diluent type B 31HA1
31A		 1000
1250		 +10°C
+10°C		 +15°C
+15°C
tert-Butyl peroxypivalate, not more than 42% in diluent type A 31HA1
31A		 1000
1250		 +10°C
+10°C		 +15°C
+15°C
Di-(2-neodecanoylperoxyisopropyl)benzene, not more than 42%, stable dispersion, in water 31A 1250 -15°C -5°C
3-Hydroxy-1,1-dimethylbutyl peroxyneodecanoate, not more than 52%, stable dispersion, in water 31A 1250 -15°C -5°C
Cumyl peroxyneodecanoate, not more than 52%, stable dispersion, in water 31A 1250 -15°C -5°C
Di-(4-tert-butylcyclohexyl) peroxydicarbonate, not more than 42%, stable dispersion, in water 31HA1 1000 +30°C +35°C
Dicetyl peroxydicarbonate, not more than 42%, stable dispersion, in water 31HA1 1000 +30°C +35°C
Dicyclohexyl peroxydicarbonate, not more than 42% as a stable dispersion, in water 31A 1250 +10°C +15°C
Di-(2-ethylhexyl) peroxydicarbonate, not more than 62%, stable dispersion, in water 31A
31HA1		 1250
1000		 -20°C
-20°C		 -10°C
-10°C
Dimyristyl peroxydicarbonate, not more than 42%, stable dispersion, in water 31HA1 1000 +15°C +20°C
Di-(3,5,5-trimethylhexanoyl) peroxide, not more than 52% in diluent type A 31HA1
31A		 1000
1250		 +10°C
+10°C		 +15°C
+15°C
Di-(3,5,5-trimethylhexanoyl) peroxide, not more than 52%, stable dispersion, in water 31A 1250 +10°C +15°C
Diisobutyryl peroxide, not more than 28% as a stable dispersion in water 31HA1
31A		 1000
1250		 -20°C
-20°C		 -10°C
-10°C
Diisobutyryl peroxide, not more than 42% as a stable dispersion in water 31HA1
31A		 1000
1250		 -25°C
-25°C		 -15°C
-15°C
1,1,3,3-Tetramethylbutyl peroxy-2-ethylhexanoate, not more than 67%, in diluent type A 31HA1 1000 +15°C +20°C
1,1,3,3-Tetramethylbutyl peroxyneodecanoate, not more than 52%, stable dispersion, in water 31A
31HA1		 1250
1000		 -5°C
-5°C		 +5°C
+5°C
3120 ORGANIC PEROXIDE, TYPE F, SOLID, TEMPERATURE CONTROLLED

Additional provisions:

  1. IBCs shall be provided with a device to allow venting during transport. The inlet to the pressure relief device shall be sited in the vapour space of the IBC under maximum filling conditions during transport.

  2. To prevent explosive rupture of metal IBCs or composite IBCs with complete metal casing, the emergency relief devices shall be designed to vent all the decomposition products and vapours evolved during self-accelerating decomposition or during a period of not less than one hour of fire-engulfment as calculated by the formula in 4.2.1.13.8. The control and emergency temperatures specified in this packing instruction are based on a non-insulated IBC. When consigning an organic peroxide in an IBC in accordance with this instruction, it is the responsibility of the consignor to ensure that:

    1. the pressure and emergency relief devices installed on the IBC are designed to take appropriate account of the self-accelerating decomposition of the organic peroxide and of fire engulfment; and

    2. when applicable, the control and emergency temperatures indicated are appropriate, taking into account the design (such as insulation) of the IBC to be used.