Rubidium hydroxide solution
Rubidium is a chemical element; it has symbol Rb and atomic number 37. It is a very soft, whitish-grey solid in the alkali metal group, similar to potassium and caesium. Rubidium is the first alkali metal in the group to have a density higher than water. On Earth, natural rubidium comprises two isotopes: 72% is a stable isotope, 85Rb, and 28% is the slightly radioactive 87Rb, with a half-life of 48.8 billion years – more than three times as long as the estimated age of the universe Wikipedia
Hazardous Materials Table
Source:
49 CFR §172 (15 June 2026)
(3) Hazard class 8
Corrosive liquids |
UN 2677 |
II |
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×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. | B2 | |
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| IB2 | <sub>Authorized IBCs:</sub> Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1).<br><sub>Additional Requirement:</sub> 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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| T7 | <table class="table table-bordered table-condensed ushmr-sp-table"><tr><th>Minimum test pressure (bar)</th><td>4</td></tr><tr><th>Minimum shell thickness</th><td>§ 178.274(d)(2)</td></tr><tr><th>Pressure-relief requirements</th><td>Normal</td></tr><tr><th>Bottom opening requirements</th><td>§ 178.275(d)(3)</td></tr></table> Browse special provision T7 |
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| TP2 | a. The maximum degree of filling must not exceed the degree of filling determined by the following:<br>  <br>Where: <br>t<sub>r</sub> is the maximum mean bulk temperature during transport, <br>t<sub>f</sub> is the temperature in degrees celsius of the liquid during filling, and <br>α is the mean coefficient of cubical expansion of the liquid between the mean temperature of the liquid during filling (t<sub>f</sub>) and the maximum mean bulk temperature during transportation (t<sub>r</sub>) both in degrees celsius. <br>b. For liquids transported under ambient conditions α may be calculated using the formula:<br>  <br>Where: <br>d<sub>15</sub> and d<sub>50</sub> 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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| (9A) Passenger aircraft/rail | 1 L |
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| (9B) Cargo aircraft only | 30 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) |
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| (10B) Other | |
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(3) Hazard class 8
Corrosive liquids |
UN 2677 |
III |
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×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 | <sub>Authorized IBCs:</sub> Metal (31A, 31B and 31N); Rigid plastics (31H1 and 31H2); Composite (31HZ1 and 31HA2, 31HB2, 31HN2, 31HD2 and 31HH2).<br><sub>Additional Requirement:</sub> 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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| T4 | <table class="table table-bordered table-condensed ushmr-sp-table"><tr><th>Minimum test pressure (bar)</th><td>2.65</td></tr><tr><th>Minimum shell thickness</th><td>§ 178.274(d)(2)</td></tr><tr><th>Pressure-relief requirements</th><td>Normal</td></tr><tr><th>Bottom opening requirements</th><td>§ 178.275(d)(3)</td></tr></table> Browse special provision T4 |
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| TP1 | The maximum degree of filling must not exceed the degree of filling determined by the following:<br>  <br>Where: <br>t<sub>r</sub> is the maximum mean bulk temperature during transport, and t<sub>f</sub> is the temperature in degrees celsius of the liquid during filling. Browse special provision TP1 |
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| (9A) Passenger aircraft/rail | 5 L |
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| (9B) Cargo aircraft only | 60 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) |
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| (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 II | PG III |
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| 1 | | |
| 2 | Rubidium hydroxide solution | Rubidium hydroxide solution |
| 3 | 8 | 8 |
| 4 | UN 2677 | UN 2677 |
| 5 | II | III |
| 6 | 8 | 8 |
| 7 | B2, IB2, T7, TP2 | IB3, T4, TP1 |
| 8A | 154 | 154 |
| 8B | 202 | 203 |
| 8C | 242 | 241 |
| 9A | 1 L | 5 L |
| 9B | 30 L | 60 L |
| 10A | A | A |
| 10B | 29, 52. | 29, 52. |
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.
Hinweis: In der Kompatibilitätstabelle sind Stoffe der Gefahrenklasse 8 nur dann zu berücksichtigen, wenn der Stoff flüssig ist. Derzeit kann
HazMat Tool nicht prüfen, ob der Stoff flüssig ist. Dies wird daher hier angenommen. Siehe
PHMSA Interpretation #09-0252.
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Must not be loaded, transported, or stored together in the same vehicle or facility. |
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May be loaded, transported, or stored together. |
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May be loaded, transported, or stored together only with restrictions. |
