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IATA危险品规章 Dangerous Goods Regulations 2

时间:2014-11-10 01:35来源:IATA 作者:航空 点击:
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Note: 3.6.1.3.4 Appropriate animal tests for the various routes Toxins from plant, animal or bacterial sources which do of exposure are described in 3.6.1.5.1 to 3.6.1.5.3. When not contain any infectious substances or toxins that are a substance exhibits a different order of toxicity by two or contained in substances which are not infectious more of these routes of administration, the highest degree substances should be considered for classification in of danger must be assigned. Division 6.1 and assignment to UN 3172.
3.6.1.3.5 The criteria to be applied for grouping a substance according to the toxicity it exhibits by all three
3.6.1.2  Classification routes of administration are presented in the following paragraphs.
To be classified as “Toxic” for purposes of these Regu-
lations, a substance must meet the minimum criteria for  3.6.1.3.6 The grouping for the oral and dermal routes as
Packing Group III shown in Tables 3.6.A and 3.6.B.  well as for inhalation of dusts and mists are as shown in Table 3.6.A.
3.6.1.3 Packing Group Criteria 3.6.1.4 Forbidden Toxic Substances
3.6.1.3.1 Toxic substances of Division 6.1, including pesticides, must be allocated to packing groups referred Liquids having a vapour inhalation toxicity of Packing according to the degree of their toxic hazards in transport Group I are forbidden on both passenger and cargo as follows:
aircraft.
(a) Packing Group I—Substances and preparations
presenting a very severe toxicity risk;
TABLE 3.6.A
Oral, Dermal and Dust/Mist Inhalation Hazards Division 6.1 Packing Group Criteria (3.6.1.3)
Packing Group  Oral Toxicity LD50 (mg/kg)  Dermal Toxicity LD50 (mg/kg)  Inhalation Toxicity by Dusts and Mists LC50 (mg/L)
I   5.0   50   0.2
II  > 5.0 but  50  > 50 but  200  > 0.2 but  2.0
IIIa  > 50 but  300  > 200 but  1,000  > 2.0 but  4.0
a
Tear gas substances must be included in Packing Group II even if their toxicity data correspond to Packing Group III
values.
3.6
Notes:
1.See 3.6.1.5 for explanation of LD50 and LC50.
2.Substances meeting the criteria of Class 8 and with an inhalation toxicity of dusts and mists (LC50) leading to Packing Group I are only accepted for an allocation to Division 6.1 if the toxicity through oral ingestion or dermal contact is at least in the range of Packing Group I or II. Otherwise an allocation to Class 8 is made when appropriate (see 3.8.2.2).
TABLE 3.6.B Vapour Inhalation Hazard—Division 6.1 Packing Group Criteria (3.6.1.3)
Packing Group  Inhalation Hazard
I  LC50  1,000 mL/m3 and V  10 × LC50
II  LC50  3,000 mL/m3 and V  LC50 and not meeting criteria for Packing Group I
III  LC50  5,000 mL/m3 and V  0.2 × LC50 and not meeting criteria for Packing Group I or II
Notes:
1.V is that saturated vapour concentration in air of the substance in mL/m3 at 20°C and standard atmospheric pressure. If the vapour pressure at 20°C is known, V can be calculated as follows:
where:
p = vapour pressure at 20°C.
P = standard atmospheric pressure.
Note p and P must be the same, e.g.:
if p is in kPa, P = 100 kPa;
if p is in mBar, P = 1,000 mBar;
if p is in psi, P = 14.7 psi.
2.Tear gas substances having toxicity data corresponding to Packing Group III values are nevertheless included in Packing Group II.
3.Figure 3.6.C is a graphic representation of Table 3.6.B.
FIGURE 3.6.C
Vapour Inhalation Hazard Diagram—Division 6.1 Packing Group Criteria (3.6.B)
3.6.1.5.3.1 Inhalation Criteria for Dust and Mist
The criteria for inhalation toxicity of dusts and mists in
3.6.1.3 and Table 3.6.A are based on LC50 data relating to 1 hour exposures, and where such information is available it must be used. However, where only LC50 data relating to 4 hour exposures to dusts and mists are available, such figures can be multiplied by four and the product substituted in the above criteria; i.e. LC50 (4 h) × 4 is considered the equivalent of LC50 (1 h).
3.6.1.5.3.2 Inhalation Criteria for Vapours
Liquids having toxic vapours must be assigned to packing groups shown in 3.6.1.3 and Table 3.6.B where V is that saturated vapour concentration in air of the substance in mL/m3 at 20°C and standard atmospheric pressure. The criteria for inhalation toxicity of vapours in 3.6.1.3 and Table 3.6.B are based on LC50 data relating to 1 hour exposures, and where such information is available it must be used. However, where only LC50 data relating to 4 hour exposures to the vapours are available, such figures can be multiplied by two and the product substi-tuted in the above criteria; i.e. LC50 (4 h) × 2 is considered the equivalent of LC50 (1 h). In Figure 3.6.C, the above criteria are expressed in graphical form, as an aid to easy classification. However, because of approxi-mations inherent in the use of graphs, substances on or near packing group borderlines must be checked using numerical criteria.
3.6.1.6 Inhalation Criteria for Liquid Mixtures
Mixtures of liquids that are toxic by inhalation must be assigned to packing groups according to 3.6.1.6.1 or
3.6.1.6.2.
3.6.1.6.1 Calculations to Establish Packing Group
If LC50 data is available for each of the toxic substances comprising a liquid mixture, the packing group may be determined as follows:
(a)  Estimate the LC50 of the mixture using the formula:
fi = mole fraction of the ith component substance of
the liquid mixture; and LC50i = mean lethal concentration of the ith compo-nent substance of the liquid mixture in mL/m3;
(b)  Estimate the volatility of each component substance of the liquid mixture using the following formula:
pi = partial pressure of the ith component substance in kPa at 20°C and one atmosphere pressure;
 
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