UN1005

AMMONIA, ANHYDROUS; or ANHYDROUS AMMONIA

• Class: 2.3 (8)
• Packing Group / Category: None
• Special Provisions: 23, 158
• Explosive Limit and Limited Quantity Index: 0
• Excepted Quantities: E0
• ERAP Index: 3000
• Passenger Carrying Vessel Index: Forbidden
• Passenger Carrying Road Vehicle or Passenger Carrying Railway Vehicle Index: Forbidden

Special Provision 23

1. A person must not import, offer for transport, handle or transport these dangerous goods unless

   1. they are contained in a means of containment that is marked in accordance with section 4.23, or, for UN1005, ANHYDROUS AMMONIA, in a large means of containment, in accordance with section 4.18.2; and

   2. they are accompanied by a shipping document that complies with subparagraph 3.5(1)(c)(vii).

2. This special provision does not apply to a person who transports these dangerous goods in accordance with an exemption set out in section 1.15, 1.17, 1.17.1 or 1.24.

Special Provision 158

1. These Regulations, except for Parts 1 and 2, do not apply in respect of anhydrous ammonia that is adsorbed or absorbed on a solid material that is contained in an ammonia dispensing system or in a pressure receptacle that is intended to form part of an ammonia dispensing system if

   1. the adsorption or absorption presents the following properties:

      1. the pressure at a temperature of 20 °C in the receptacle is less than 60 kPa (0.6 bar),

      2. the pressure at a temperature of 35 °C in the receptacle is less than 100 kPa (1 bar), and

      3. the pressure at a temperature of 85 °C in the receptacle is less than 1.2 MPa (12 bar);

   2. the adsorbent or absorbent material does not meet the criteria in Part 2 (Classification) for inclusion in any of Classes 1 to 8;

   3. the pressure receptacle

      1. does not contain more than 10 kg of ammonia,

      2. is made of a material that, as specified in special provision 379 of the UN Recommendations, is compatible with ammonia,

      3. is hermetically sealed and able to contain the generated ammonia,

      4. has a means of closure that hermetically seals the pressure receptacle and is able to contain the generated ammonia,

      5. is able to withstand the pressure generated at 85 °C with a volumetric expansion of 0.1 % or less,

      6. is fitted with a pressure release device that allows for gas evacuation without violent rupture, explosion or projection once pressure exceeds 1.5 MPa (15 bar), and

      7. is able to withstand a pressure of 2 MPa (20 bar) without leakage when the pressure relief device is deactivated; and

   4. in the case of a pressure receptacle that is contained in an ammonia dispensing system, the pressure receptacle is connected to the system in such a way that the whole system has the same strength as a pressure receptacle that is not contained in an ammonia dispensing system.

2. The mechanical strength properties set out in subsection (1) must be tested

   1. using a prototype of a pressure receptacle that is filled to nominal capacity or a prototype of a pressure receptacle that is filled to nominal capacity and is contained in an ammonia dispensing system; and

   2. by increasing the temperature until the pressures specified in subsection (1) are reached.

CAUTION: This information is provided for information purposes only. It does not replace the Transportation of Dangerous Goods Regulations (TDGR). Please check the TDGR using this link.