Special provisions may be very complex. The extracts are taken from 49 CFR §172.102
. Please be careful with the information, as necessary, additional conditions may be applied that are not written here. Please check the original source and report bugs.
When transported by private motor carrier only, the following corrosive liquids may be packaged in polyethylene bottles with a capacity no greater than 3.785L (one gallon), further packed inside an
open-top, heavy wall, high density polyethylene box (i.e., crate) in a manner that the polyethylene bottles are not subjected to any superimposed weight, and the boxes must be reasonably secured against
movement within the transport vehicle and loaded so as to minimize the possibility of coming in contact with other lading:
- Compounds, cleaning liquid, NA1760, PG II or III;
- Corrosive liquid, acidic, inorganic, n.o.s., UN3264, PG II;
- Corrosive liquid, acidic, organic, n.o.s., UN3265, PG III;
- Corrosive liquid, basic, inorganic, n.o.s., UN3266, PG II;
- Hypochlorite solutions, UN1791, PG III;
- Hydrochloric acid solution, UN1789, PG II; and
- Sulfuric acid, UN2796, PG II.
- a. No more than four bottles, securely closed with threaded caps,
may be packed in each box.
- b. Each empty bottle must have a minimum weight of not less than
140 grams and a minimum wall thickness of not less than 0.020 inch
- c. The completed package must meet the Packing Group II performance
level, as applicable for combination packagings with a plastic box
outer packaging, in accordance with subpart M of part 178 of this
- (i) Tests must be performed on each type and size of bottle, for
each manufacturing location. Samples taken at random must withstand the
prescribed tests without breakage or leakage.
- (ii) One bottle for every two hours of production, or for every
2500 bottles produced, must be tested by dropping a bottle filled to
98% capacity with water from a height of 1.2 meters (3.9 feet) onto
solid concrete directly on the closure.
- (iii) A copy of the test results must be kept on file at each
facility where packagings are offered for transportation, and must be
made available to a representative of the Department upon request.
- (iv) The name or symbol of the bottle producer, and the month and
year of manufacture, must be marked by embossing, ink-jet printing of permanent ink, or other permanent means on the face or bottom of each bottle, in letters and numbers at least 6
mm (0.2 inch) high. Symbols, if used, must be registered with the
- (v) The box must be constructed from high-density polyethylene in
the density range 0.950-0.962, and be capable of holding liquid when in
the upright position.
Browse special provision 386
Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2).
Only liquids with a vapor pressure less than or equal to 110 kPa at 50 [deg]C (1.1 bar at 122 [deg]F), or 130 kPa at 55 [deg]C (1.3 bar at 131 [deg]F) are authorized, except for UN2672
(also see Special Provision IP8
Browse special provision IB3
Aluminum construction materials are not authorized for any part of a packaging which is normally in contact with the hazardous material.
Browse special provision N34
a. The maximum degree of filling must not exceed the degree of filling determined by the following:
is the maximum mean bulk temperature during transport,
is the temperature in degrees celsius of the liquid during filling, and α is the mean coefficient of cubical expansion of the liquid between the mean temperature of the liquid during filling (tf
) and the maximum mean bulk temperature during transportation (tr
) both in degrees celsius.
b. For liquids transported under ambient conditions α may be calculated using the formula:
are the densities (in units of mass per unit volume) of the liquid at 15 °C (59 °F) and 50 °C (122 °F), respectively.
Browse special provision TP2
The portable tank may be fitted with a device to prevent the build up of excess pressure due to the slow decomposition of the hazardous material being transported. The device must be in the vapor space when the tank is filled under maximum filling conditions. This device must also prevent an unacceptable amount of leakage of liquid in the case of overturning.
Browse special provision TP24