International Bio-Analytical Industries, Inc.
A Global Energy Research & Resource Company
Call us at 561-826-0061
or
Fax 561-892-8450
|
International Bio-Analytical Industries, Inc.
|
A Global Energy Research & Resource Company
|
Call us at 561-826-0061 or Fax 561-892-8450
|
Uranyl Carbonate |
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| Formula | UO2(CO3) |
| Structure | |
| Description | An odorless to chalky smelling orange-yellow sand-like solid in its pure crystalline form. |
| Uses | |
| Registry Numbers and Inventories. | |
| CAS | |
| NIH PubChem CID | |
| EC (EINECS/ELINCS) | |
| Merck | |
| Beilstein/Gmelin | |
| Canada DSL/NDSL | |
| US TSCA | Listed |
| Austrailia AICS | Listed |
| Properties. | |
| Formula | UO2(CO3) |
| Formula mass | 330.04 MW |
| Density | 5.6 |
| Hazards and Protection. | |
| Storage | Protect from physical damage. Store at in cool, dry place. Protect personnel from radiation emanation if present. Separate from other readily oxidizable or combustible materials. |
| Handling | All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood. |
| Protection | Approved dust respirator self contained breathing apparatus; goggles or face shield; protective clothing. |
| Respirators | Use NIOSH/MSHA approved respirator appropriate for exposure of concern. |
| Small spills/leaks | Evacuate area and ventilate. Wear protective equipment. If required, use an inert absrobent. Sweep up and place in an appropriate container for disposal. Wash contaminated surfaces. |
| Stability | No data. |
| Incompatibilities | Can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers) Can react violently with active metals, cyanides, esters, and thiocyanates. |
| Fire. | ||||
| Fire fighting | Use appropriate media to suppress exposure fire. Contain runoff. | |||
| Health. | |
| Exposure limit(s) | OSHA: PEL (8 h TWA): 0.05 mg |
| Exposure effects | Supralethal radiation doses may result in headache, acute brain syndrome, alterations in mental status including coma, and (rarely) seizures within minutes of exposure. Prenatal ionizing radiation exposure may cause congenital anomalies, mental retardation, and an increased incidence of seizures. |
| Ingestion | Gastrointestinal syndrome (nausea/vomiting) commonly occurs after doses of 9 to 20 gy and may occur following doses as low as 5 gy. Initial vomiting is followed by persistent diarrhea, which may be bloody. |
| Inhalation | Pulmonary radiation injury may result in radiation pneumonitis and radiation pulmonary fibrosis. |
| Skin | Thermonuclear burns may occur. If erythema is produced by a penetrating radiation, serious systemic injury is certain. |
First aid |
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| Ingestion | Seek medical attention. If individual is drowsy or unconscious, do not give anything by mouth; place individual on the left side with the head down. Contact a physician, medical facility, or poison control center for advice about whether to induce vomiting. If possible, do not leave individual unattended. |
| Inhalation | Monitoring exposed patients for contamination and decontamination procedures should be started. All personnel involved in handling patients should wear disposable protective clothing. The patient should be completely undressed and given a soap and water bath or shower (if the patient's condition permits and if the facility exists). Acute inhalation of radionuclides presents some difficult problems. |
| Skin | Remove contaminated clothing. Wash exposed area with soap and water. If symptoms persist, seek medical attention. Launder clothing before reuse. |
| Eyes | If symptoms develop, immediately move individual away from exposure and into fresh air. Flush eyes gently with water for at least 15 minutes while holding eyelids apart; seek immediate medical attention. |
| Transportation | ||
| USCG CHRIS Code | URS | |
Uranium (uranyl) carbonate, UO2(CO3), is a carbonate of uranium that forms the backbone of several uranyl mineral species such as Andersonite, McKelveyite and Wyartite and most importantly Rutherfordine. It is also found in both the mineral and organic fractions of coal and its fly ash and is the main component of uranium in mine tailing seepage water. Uranium like other actinides readily forms a dioxide uranyl core (UO2). In the environment, this uranyl core readily complexes with carbonate to form charged complexes. Although uranium forms insoluble solids or adsorbs to mineral surfaces at alkaline pH it is these soluble carbonate complexes that increase its solubility, availability, and mobility with low affinities to soil. Uranium(VI) generally forms a pH-dependent suite of uranyl-carbonate complexes in ground water solutions:
A common method for concentrating uranium from a solution uses solutions of uranyl carbonates which are passed through a resin bed where the complex ions are transferred to the resin by ion exchange with a negative ion like chloride. After build-up of the uranium complex on the resin, the uranium is eluted with a salt solution and the uranium is precipitated in another process. The uranyl carbonate minerals
Uranyl-carbonate complexes form a large class of mineral species. Several have been described in literature. These include:
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Rutherfordine
Rutherfordine is a mineral containing almost pure
uranium carbonate (UO2CO3). It was discovered in 1906 and
is named after Ernest Rutherford. It is found primarily in the Morogoro Region
of Tanzania in Africa. It has been reported in Zaire and the Northern Territory
of Australia. It appears as brownish, brownish yellow, white, light brown
orange, or light yellow fluorescent encrustations. It is a secondary alteration
product from uraninite. It crystallizes in the orthorhombic system in
translucent lathlike, elongated, commonly radiating in fibrous masses,
inpulverulent, earthy to very fine-grained dense masses. It has a specific
gravity of 5.7 and exhibits two directions of cleavage. It is also known as
diderichite.
Rutherfordine forms under acidic to neutral pH and is the only known mineral that contains only uranyl and carbonate. It was discovered by Marckwald (1906) and described as a mineral species by Frondel and Meyrowitz (1956). The structure of rutherfordine was provided by Christ and Clark (1955) and refined by Finch et al.(1999). As a carbonate, rutherfordine will react with acids, liberating carbon dioxide.
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