Organometallic compound, liquid, toxic, n.o.s
HMT 15 June 2026
Reference only — HMT snapshot for inspection and audit support; not a shipping paper, placard mandate, or CVI record.
Use Print / PDF below for field notes.
- UN / ID
- UN 3282
- Hazard class
- 6.1
- Packing group
- I (multiple — see tabs)
- ERG guide
- ERG 151
- Special provisions
- SP T14, SP TP2, SP TP13, SP TP27
- Source
- 49 CFR §172 (15 June 2026)
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Organometallic compound, liquid, toxic, n.o.s
Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkali, alkaline earth, and transition metals, and sometimes broadened to include metalloids like boron, silicon, and selenium, as well. Aside from bonds to organyl fragments or molecules, bonds to 'inorganic' carbon, like carbon monoxide (metal carbonyls), cyanide, or carbide, are generally considered to be organometallic as well. Some related compounds such as transition metal hydrides and metal phosphine complexes are often included in discussions of organometallic compounds, though strictly speaking, they are not necessarily organometallic. The related but distinct term "metalorganic compound" refers to metal-containing compounds lacking direct metal-carbon bonds but which contain organic ligands Wikipedia
Hazardous Materials Table
Source:
49 CFR §172 (15 June 2026)
(3) Hazard class 6.1 Poisonous Material |
UN 3282 |
I |
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This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).
×Note: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. | T14 | | Minimum test pressure (bar) | 6 |
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| Minimum shell thickness | 6 mm |
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| Pressure-relief requirements | § 178.275(g)(3) |
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| Bottom opening requirements | Prohibited |
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Browse special provision T14 |
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| TP2 | a. The maximum degree of filling must not exceed the degree of filling determined by the following:  Where: t r is the maximum mean bulk temperature during transport, t f 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 (t f) and the maximum mean bulk temperature during transportation (t r) both in degrees celsius. b. For liquids transported under ambient conditions α may be calculated using the formula:  Where: d 15 and d 50 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 |
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| TP13 | |
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| TP27 | A portable tank having a minimum test pressure of 4 bar (400 kPa) may be used provided the calculated test pressure is 4 bar or less based on the MAWP of the hazardous material, as defined in § 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP. Browse special provision TP27 |
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| (9A) Passenger aircraft/rail | 1 L |
| (9B) Cargo aircraft only | 30 L |
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| (10A) Location | B Stowage category “B” means - (i) The material may be stowed “on deck” or “under deck” on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and
- (ii) “On deck only” on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.
Source: 49 CFR §172.101(k) |
| (10B) Other | — |
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(3) Hazard class 6.1 Poisonous Material |
UN 3282 |
II |
|
This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).
×Note: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. | IB2 | Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized. Browse special provision IB2 |
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| T11 | | Minimum test pressure (bar) | 6 |
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| Minimum shell thickness | § 178.274(d)(2) |
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| Pressure-relief requirements | Normal |
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| Bottom opening requirements | § 178.275(d)(3) |
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Browse special provision T11 |
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| TP2 | a. The maximum degree of filling must not exceed the degree of filling determined by the following:  Where: t r is the maximum mean bulk temperature during transport, t f 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 (t f) and the maximum mean bulk temperature during transportation (t r) both in degrees celsius. b. For liquids transported under ambient conditions α may be calculated using the formula:  Where: d 15 and d 50 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 |
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| TP27 | A portable tank having a minimum test pressure of 4 bar (400 kPa) may be used provided the calculated test pressure is 4 bar or less based on the MAWP of the hazardous material, as defined in § 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP. Browse special provision TP27 |
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| (9A) Passenger aircraft/rail | 5 L |
| (9B) Cargo aircraft only | 60 L |
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| (10A) Location | B Stowage category “B” means - (i) The material may be stowed “on deck” or “under deck” on a cargo vessel and on a passenger vessel carrying a number of passengers limited to not more than the larger of 25 passengers, or one passenger per each 3 m of overall vessel length; and
- (ii) “On deck only” on passenger vessels in which the number of passengers specified in paragraph (k)(2)(i) of this section is exceeded.
Source: 49 CFR §172.101(k) |
| (10B) Other | — |
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(3) Hazard class 6.1 Poisonous Material |
UN 3282 |
III |
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This entry is signed with "G". The letter "G" identifies proper shipping names for which one or more technical names of the hazardous material must be entered in parentheses, in association with the basic description. (See §172.203(k)).
×Note: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. | IB3 | Authorized IBCs: Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2). Additional Requirement: Only liquids with a vapor pressure less than or equal to 110 kPa at 50 °C (1.1 bar at 122 °F), or 130 kPa at 55 °C (1.3 bar at 131 °F) are authorized, except for UN2672 (also see special provision IP8 in Table 2 for UN2672). Browse special provision IB3 |
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| T7 | | Minimum test pressure (bar) | 4 |
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| Minimum shell thickness | § 178.274(d)(2) |
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| Pressure-relief requirements | Normal |
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| Bottom opening requirements | § 178.275(d)(3) |
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Browse special provision T7 |
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| TP1 | The maximum degree of filling must not exceed the degree of filling determined by the following:  Where: t r is the maximum mean bulk temperature during transport, and t f is the temperature in degrees celsius of the liquid during filling. Browse special provision TP1 |
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| TP28 | A portable tank having a minimum test pressure of 2.65 bar (265 kPa) may be used provided the calculated test pressure is 2.65 bar or less based on the MAWP of the hazardous material, as defined in § 178.275 of this subchapter, where the test pressure is 1.5 times the MAWP. Browse special provision TP28 |
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| (9A) Passenger aircraft/rail | 60 L |
| (9B) Cargo aircraft only | 220 L |
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| (10A) Location | A Stowage category “A” means the material may be stowed “on deck” or “under deck” on a cargo vessel or on a passenger vessel. Source: 49 CFR §172.101(k) |
| (10B) Other | — |
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Packing group comparison
Multiple packing groups apply to this entry. See assignment criteria in 49 CFR §173 Subpart D. Details are in the tabs above; differences are highlighted.
| PG I | PG II | PG III |
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| 1 | G | G | G |
| 2 | Organometallic compound, liquid, toxic, n.o.s | Organometallic compound, liquid, toxic, n.o.s | Organometallic compound, liquid, toxic, n.o.s |
| 3 | 6.1 | 6.1 | 6.1 |
| 4 | UN 3282 | UN 3282 | UN 3282 |
| 5 | I | II | III |
| 6 | 6.1 | 6.1 | 6.1 |
| 7 | T14, TP2, TP13, TP27 | IB2, T11, TP2, TP27 | IB3, T7, TP1, TP28 |
| 8A | None | 153 | 153 |
| 8B | 201 | 202 | 203 |
| 8C | 242 | 242 | 241 |
| 9A | 1 L | 5 L | 60 L |
| 9B | 30 L | 60 L | 220 L |
| 10A | B | B | A |
| 10B | — | — | — |
Segregation chart for load, transport, and storage
This chart shows whether loading, transport, or storage with other hazard classes is permitted, prohibited, or restricted. Based on 49 CFR §177.848.
Packages with POISON or POISON INHALATION HAZARD labels, or a POISON label displaying “PG III,” or “PG III” marked next to a POISON label may not be transported with foodstuffs, feed or any other edible material, intended for humans or animals. For exceptions see
49 CFR §177.841(e).
Scope & sources (important)Click to show CFR references
This check evaluates segregation per 49 CFR §177.848. Additional loading/unloading and handling requirements may still apply; see 49 CFR §177 Subpart B (Loading and Unloading):
- §177.834 - General requirements
- §177.835 - Class 1 materials
- §177.837 - Class 3 materials
- §177.838 - Class 4 (flammable solid) materials, Class 5 (oxidizing) materials, and Division 4.2 (pyroforic liquid) materials
- §177.839 - Class 8 (corrosive) materials
- §177.840 - Class 2 (gases) materials
- §177.841 - Division 6.1 and Division 2.3 materials
- §177.842 - Class 7 (radioactive) material
- §177.843 - Contamination of vehicles
Similar substances
| UN / ID | Proper shipping name | Hazard class |
|---|
| UN 3394 | Organometallic substance, liquid, pyrophoric, water-reactive | 4.2 |
| UN 3399 | Organometallic substance, liquid, water-reactive, flammable | 4.3 |
| UN 3393 | Organometallic substance, solid, pyrophoric, water-reactive | 4.2 |
| UN 3396 | Organometallic substance, solid, water-reactive, flammable | 4.3 |
| UN 3397 | Organometallic substance, solid, water-reactive, self-heating | 4.3 |
| UN 3392 | Organometallic substance, liquid, pyrophoric | 4.2 |
| UN 3398 | Organometallic substance, liquid, water-reactive | 4.3 |
| UN 3391 | Organometallic substance, solid, pyrophoric | 4.2 |
| UN 3400 | Organometallic substance, solid, self-heating | 4.2 |
| UN 3395 | Organometallic substance, solid, water-reactive | 4.3 |
| UN 3467 | Organometallic compound, solid, toxic, n.o.s | 6.1 |