Thorium Nitrate

CAS 13823-29-5
Linear Formula: Th(NO3)4·xH2O
MDL Number: MFCD03094924
EC No.: 237-514-1

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(2N) 99% Thorium Nitrate
TH-NAT-02 Pricing
(3N) 99.9% Thorium Nitrate
TH-NAT-03 Pricing
(4N) 99.99% Thorium Nitrate
TH-NAT-04 Pricing


Compound Formula N4O12Th
Molecular Weight 246.04
Appearance White
Melting Point N/A
Boiling Point N/A
Density N/A
Monoisotopic Mass N/A
Exact Mass N/A

Health & Safety Information

Signal Word Danger
Hazard Statements H272-H302-H315-H319-H335-H373-H411
Hazard Codes O,Xn,R
Risk Codes 8-22-33-36/37/38
Safety Statements 36/37/39-45
RTECS Number XO6825000
Transport Information UN 1477 5.1/PG 2
WGK Germany 3

View and Print SDS


Date Accessed: 10/21/2016
Date Revised: 05/15/2015


Product Name: Thorium Nitrate

Product Number: All applicable American Elements product codes, e.g. TH-NAT-02 , TH-NAT-03 , TH-NAT-04

CAS #: 13823-29-5

Relevant identified uses of the substance: Scientific research and development

Supplier details:
American Elements
1093 Broxton Ave. Suite 2000
Los Angeles, CA 90024
Tel: +1 310-208-0551
Fax: +1 310-208-0351

Emergency telephone number:
Domestic, North America +1 800-424-9300
International +1 703-527-3887


2.1 Classification of the substance or mixture GHS Classification in accordance with 29 CFR 1910 (OSHA HCS) Oxidizing solids (Category 2), H272 Acute toxicity, Oral (Category 4), H302 Skin irritation (Category 2), H315 Eye irritation (Category 2A), H319 Specific target organ toxicity - single exposure (Category 3), Respiratory system, H335 Specific target organ toxicity - repeated exposure (Category 2), H373 Acute aquatic toxicity (Category 2), H401 Chronic aquatic toxicity (Category 2), H411 For the full text of the H-Statements mentioned in this Section, see Section 16. 2.2 GHS Label elements, including precautionary statements
Flame Over Circle - GHS03Health Hazard - GHS08Exclamation Mark - GHS07Environment - GHS09
Pictogram Signal word Danger Hazard statement(s) H272 May intensify fire; oxidiser. H302 Harmful if swallowed. H315 Causes skin irritation. H319 Causes serious eye irritation. H335 May cause respiratory irritation. H373 May cause damage to organs through prolonged or repeated exposure. H411 Toxic to aquatic life with long lasting effects. Precautionary statement(s) P210 Keep away from heat. P220 Keep/Store away from clothing/ combustible materials. P221 Take any precaution to avoid mixing with combustibles. P260 Do not breathe dust/ fume/ gas/ mist/ vapours/ spray. P264 Wash skin thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection. P301 + P312 IF SWALLOWED: Call a POISON CENTER or doctor/ physician if you feel unwell. P302 + P352 IF ON SKIN: Wash with plenty of soap and water. P304 + P340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. P305 + P351 + P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P314 Get medical advice/ attention if you feel unwell. P321 Specific treatment (see supplemental first aid instructions on this label). P330 Rinse mouth. P332 + P313 If skin irritation occurs: Get medical advice/ attention. P337 + P313 If eye irritation persists: Get medical advice/ attention. P362 Take off contaminated clothing and wash before reuse. P370 + P378 In case of fire: Use dry sand, dry chemical or alcohol-resistant foam for extinction. P391 Collect spillage. P403 + P233 Store in a well-ventilated place. Keep container tightly closed. P405 Store locked up. P501 Dispose of contents/ container to an approved waste disposal plant. 2.3 Hazards not otherwise classified (HNOC) or not covered by GHS Radioactive.


3.1 Substances Formula : N4O12Th · xH2O Molecular Weight : 480.06 g/mol CAS-No. : 13823-29-5 EC-No. : 237-514-1 Hazardous components Component Classification Concentration Thorium tetranitrate hydrate Ox. Sol. 2; Acute Tox. 4; Skin Irrit. 2; Eye Irrit. 2A; STOT SE 3; STOT RE 2; Aquatic Acute 2; Aquatic Chronic 2; H272, H302, H315, H319, H335, H373, H411 - For the full text of the H-Statements mentioned in this Section, see Section 16.


4.1 Description of first aid measures General advice Consult a physician. Show this safety data sheet to the doctor in attendance.Move out of dangerous area. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician. 4.2 Most important symptoms and effects, both acute and delayed The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11 4.3 Indication of any immediate medical attention and special treatment needed no data available


5.1 Extinguishing media Suitable extinguishing media Use extinguishing measures that are appropriate to local circumstances and the surrounding environment. 5.2 Special hazards arising from the substance or mixture nitrogen oxides (NOx), Metal oxides 5.3 Advice for firefighters Wear self contained breathing apparatus for fire fighting if necessary. 5.4 Further information Use water spray to cool unopened containers. The product itself does not burn.


6.1 Personal precautions, protective equipment and emergency procedures Use personal protective equipment. Avoid dust formation. Avoid breathing vapours, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust. For personal protection see section 8. 6.2 Environmental precautions Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided. 6.3 Methods and materials for containment and cleaning up Sweep up and shovel. Contain spillage, and then collect with an electrically protected vacuum cleaner or by wetbrushing and place in container for disposal according to local regulations (see section 13). Keep in suitable, closed containers for disposal. 6.4 Reference to other sections For disposal see section 13.


7.1 Precautions for safe handling Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Provide appropriate exhaust ventilation at places where dust is formed.Keep away from sources of ignition - No smoking.Keep away from heat and sources of ignition. For precautions see section 2.2. 7.2 Conditions for safe storage, including any incompatibilities Keep container tightly closed in a dry and well-ventilated place. 7.3 Specific end use(s) Apart from the uses mentioned in section 1.2 no other specific uses are stipulated


8.1 Control parameters Components with workplace control parameters Contains no substances with occupational exposure limit values. 8.2 Exposure controls Appropriate engineering controls Handle in accordance with good industrial hygiene and safety practice. Wash hands before breaks and at the end of workday. Personal protective equipment Eye/face protection Safety glasses with side-shields conforming to EN166 Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU). Skin protection Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands. Full contact Material: Nitrile rubber Minimum layer thickness: 0.11 mm Break through time: 480 min Material tested:Dermatril® (KCL 740 / Aldrich Z677272, Size M) Splash contact Material: Nitrile rubber Minimum layer thickness: 0.11 mm Break through time: 480 min Material tested:Dermatril® (KCL 740 / Aldrich Z677272, Size M) data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail, test method: EN374 If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario. Body Protection Complete suit protecting against chemicals, The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace. Respiratory protection Where risk assessment shows air-purifying respirators are appropriate use a full-face particle respirator type N100 (US) or type P3 (EN 143) respirator cartridges as a backup to engineering controls. If the respirator is the sole means of protection, use a full-face supplied air respirator. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU). Control of environmental exposure Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided.


9.1 Information on basic physical and chemical properties a) Appearance Form: solid b) Odour no data available c) Odour Threshold no data available d) pH no data available e) Melting point/freezing point no data available f) Initial boiling point and boiling range no data available g) Flash point not applicable h) Evapouration rate no data available i) Flammability (solid, gas) no data available j) Upper/lower flammability or explosive limits no data available k) Vapour pressure no data available l) Vapour density no data available m) Relative density no data available n) Water solubility soluble o) Partition coefficient: noctanol/ water no data available p) Auto-ignition temperature no data available q) Decomposition temperature no data available r) Viscosity no data available s) Explosive properties no data available t) Oxidizing properties The substance or mixture is classified as oxidizing with the category 2. 9.2 Other safety information no data available


10.1 Reactivity no data available 10.2 Chemical stability Stable under recommended storage conditions. 10.3 Possibility of hazardous reactions no data available 10.4 Conditions to avoid no data available 10.5 Incompatible materials Strong oxidizing agents 10.6 Hazardous decomposition products Other decomposition products - no data available In the event of fire: see section 5


11.1 Information on toxicological effects Acute toxicity LD50 Oral - mouse - 1,760 mg/kg Remarks: Gastrointestinal:Ulceration or bleeding from small intestine. Inhalation: no data available Dermal: no data available no data available Skin corrosion/irritation no data available Serious eye damage/eye irritation no data available Respiratory or skin sensitisation no data available Germ cell mutagenicity no data available Carcinogenicity Contains a radioactive isotope which may produce cancer and genetic mutation. IARC: 2A - Group 2A: Probably carcinogenic to humans (Thorium tetranitrate hydrate) ACGIH: No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by ACGIH. NTP: No component of this product present at levels greater than or equal to 0.1% is identified as a known or anticipated carcinogen by NTP. OSHA: No component of this product present at levels greater than or equal to 0.1% is identified as a carcinogen or potential carcinogen by OSHA. Reproductive toxicity no data available Reproductive toxicity - rat - Subcutaneous Paternal Effects: Testes, epididymis, sperm duct. Reproductive toxicity - mouse - Intraperitoneal Paternal Effects: Spermatogenesis (including genetic material, sperm morphology,motility, and count). Paternal Effects: Testes, epididymis, sperm duct. no data available Specific target organ toxicity - single exposure Inhalation - May cause respiratory irritation. Specific target organ toxicity - repeated exposure May cause damage to organs through prolonged or repeated exposure. Aspiration hazard no data available Additional Information RTECS: XO6825000 To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated. Stomach - Irregularities - Based on Human Evidence Stomach - Irregularities - Based on Human Evidence


12.1 Toxicity no data available 12.2 Persistence and degradability no data available 12.3 Bioaccumulative potential Bioaccumulation Oncorhynchus mykiss (rainbow trout) - 27 d - 0.001 μg/l Bioconcentration factor (BCF): 465 12.4 Mobility in soil no data available 12.5 Results of PBT and vPvB assessment PBT/vPvB assessment not available as chemical safety assessment not required/not conducted 12.6 Other adverse effects An environmental hazard cannot be excluded in the event of unprofessional handling or disposal. Toxic to aquatic life with long lasting effects.


13.1 Waste treatment methods Product Contact a licensed professional waste disposal service to dispose of this material. After use follow local procedures for radioactive waste. Consult local, state, and federal regulations on the disposal of radioactive waste. Observe all federal, state, and local environmental regulations. Contaminated packaging Dispose of as special waste in compliance with local and national regulations.


DOT (US) UN number: 1477 Class: 5.1 Packing group: II Proper shipping name: Nitrates, inorganic, n.o.s. Reportable Quantity (RQ): Marine pollutant: No Poison Inhalation Hazard: No IMDG UN number: 1477 Class: 5.1 Packing group: II EMS-No: F-A, S-Q Proper shipping name: NITRATES, INORGANIC, N.O.S. Marine pollutant: No IATA UN number: 1477 Class: 5.1 Packing group: II Proper shipping name: Nitrates, inorganic, n.o.s. Further information Radioactive material, excepted package - limited quantity of material


SARA 302 Components SARA 302: No chemicals in this material are subject to the reporting requirements of SARA Title III, Section 302. SARA 313 Components The following components are subject to reporting levels established by SARA Title III, Section 313: Thorium tetranitrate hydrate CAS-No. 13823-29-5 Revision Date 1993-04-24 SARA 311/312 Hazards Reactivity Hazard, Acute Health Hazard, Chronic Health Hazard Massachusetts Right To Know Components Thorium tetranitrate hydrate CAS-No. 13823-29-5 Revision Date 1993-04-24 Pennsylvania Right To Know Components CAS-No. Revision Date Thorium tetranitrate hydrate 13823-29-5 1993-04-24 New Jersey Right To Know Components Thorium tetranitrate hydrate CAS-No. 13823-29-5 Revision Date 1993-04-24 California Prop. 65 Components This product does not contain any chemicals known to State of California to cause cancer, birth defects, or any other reproductive harm.


Safety Data Sheet according to Regulation (EC) No. 1907/2006 (REACH). The above information is believed to be correct but does not purport to be all inclusive and shall be used only as a guide. The information in this document is based on the present state of our knowledge and is applicable to the product with regard to appropriate safety precautions. It does not represent any guarantee of the properties of the product. American Elements shall not be held liable for any damage resulting from handling or from contact with the above product. See reverse side of invoice or packing slip for additional terms and conditions of sale. COPYRIGHT 1997-2016 AMERICAN ELEMENTS. LICENSED GRANTED TO MAKE UNLIMITED PAPER COPIES FOR INTERNAL USE ONLY.


Nitrate IonThorium Nitrate is a highly water soluble crystalline Thorium source for uses compatible with nitrates and lower (acidic) pH. All metallic nitrates are inorganic salts of a given metal cation and the nitrate anion. The nitrate anion is a univalent (-1 charge) polyatomic ion composed of a single nitrogen atom ionically bound to three oxygen atoms (Formula: NO3) for a total formula weight of 62.05. Nitrate compounds are generally soluble in water. Nitrate materials are also oxidizing agents. When mixed with hydrocarbons, nitrate compounds can form a flammable mixture. Nitrates are excellent precursors for production of ultra high purity compounds and certain catalyst and nanoscale (nanoparticles and nanopowders) materials. Thorium Nitrate is generally immediately available in most volumes. Ultra high purity, high purity, submicron and nanopowder forms may be considered. We also produce Thorium Nitrate Solution. American Elements produces to many standard grades when applicable, including Mil Spec (military grade); ACS, Reagent and Technical Grade; Food, Agricultural and Pharmaceutical Grade; Optical Grade, USP and EP/BP (European Pharmacopoeia/British Pharmacopoeia) and follows applicable ASTM testing standards. Typical and custom packaging is available. Additional technical, research and safety (MSDS) information is available as is a Reference Calculator for converting relevant units of measurement.


Thorium nitrate hydrate, Thorium(4+) tetranitrate, Thorium(IV) nitrate

Chemical Identifiers

Linear Formula Th(NO3)4·xH2O
CAS 13823-29-5
Pubchem CID N/A
MDL Number MFCD03094924
EC No. 237-514-1
Beilstein Registry No. N/A
IUPAC Name Thorium(+4) cation tetranitrate
SMILES [Th+4].O=[N+]([O-])[O-].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O
InchI Identifier InChI=1S/4NO3.Th/c4*2-1(3)4;/q4*-1;+4

Packaging Specifications

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Shipping documentation includes a Certificate of Analysis and Safety Data Sheet (SDS). Solutions are packaged in polypropylene, plastic or glass jars up to palletized 440 gallon liquid totes, and 36,000 lb. tanker trucks.

Related Products & Element Information


See more Thorium products. Thorium (atomic symbol: Th, atomic number: 90) is a Block F, Group 3, Period 7 element with an atomic weight of 232.03806. The number of electrons in each of thorium's shells is [2, 8, 18, 32, 18, 10, 2] and its electron configuration is [Rn] 6d2 7s2. Thorium Bohr ModelThe thorium atom has a radius of 179 pm and a Van der Waals radius of 237 pm. Thorium was first discovered by Jöns Jakob Berzelius in 1829. The name Thorium originates from the Scandinavian god Thor, the Norse god of war and thunder. Elemental ThoriumIn its elemental form, thorium has a silvery, sometimes black-tarnished, appearance. It is found in small amounts in most rocks and soils. Thorium is a radioactive element that is currently the best contender for replacing uranium as nuclear fuel for nuclear reactors. It provides greater safety benefits, an absence of non-fertile isotopes, and it is both more available and abundant in the Earth's crust than uranium.

Recent Research

Separation of thorium and uranium in nitric acid solution using silica based anion exchange resin., Chen, Yanliang, Wei Yuezhou, He Linfeng, and Tang Fangdong , J Chromatogr A, 2016 Sep 30, Volume 1466, p.37-41, (2016)

Development of Separation Technology for the Removal of Radium-223 from Targeted Thorium Conjugate Formulations Part I: Purification of Decayed Thorium-227 on Cation Exchange Columns., Frenvik, Janne Olsen, Dyrstad Knut, Kristensen Solveig, and Ryan Olav B. , Drug Dev Ind Pharm, 2016 Sep 15, p.1-31, (2016)

Toxicity of cerium and thorium on Daphnia magna., Ma, Yuhui, Wang Jingkun, Peng Can, Ding Yayun, He Xiao, Zhang Peng, Li Na, Lan Tu, Wang Dongqi, Zhang Zhaohui, et al. , Ecotoxicol Environ Saf, 2016 Sep 14, Volume 134P1, p.226-232, (2016)

Computational insight into complex structures of thorium coordination with N, N'- bis(3-allyl salicylidene)-o-phenylenediamine., Lan, Wenbo, Gao Sha, Lin Ying-Wu, Liao Lifu, Wang Xiaofeng, and Nie Changming , J Mol Model, 2016 Sep, Volume 22, Issue 9, p.224, (2016)

Modeling of thorium (IV) ions adsorption onto a novel adsorbent material silicon dioxide nano-balls using response surface methodology., Kaynar, Ümit H., Şabikoğlu Israfil, Kaynar Sermin Çam, and Eral Meral , Appl Radiat Isot, 2016 Sep, Volume 115, p.280-8, (2016)

Nuclear physics: Elusive transition spotted in thorium., Safronova, Marianna , Nature, 2016 May 5, Volume 533, Issue 7601, p.44-5, (2016)

New vistas in the molecular chemistry of thorium: low oxidation state complexes., Ortu, Fabrizio, Formanuik Alasdair, Innes James R., and Mills David P. , Dalton Trans, 2016 May 4, Volume 45, Issue 18, p.7537-49, (2016)

Selective recognition of uranyl ions from bulk of thorium(iv) and lanthanide(iii) ions by tetraalkyl urea: a combined experimental and quantum chemical study., Vats, Bal Govind, Das Debasish, Sadhu Biswajit, Kannan S, Pius I C., Noronha D M., Sundararajan Mahesh, and Kumar Mukesh , Dalton Trans, 2016 May 31, (2016)

Reactor production of Thorium-229., Hogle, Susan, Boll Rose Ann, Murphy Karen, Denton David, Owens Allison, Haverlock Tamara J., Garland Marc, and Mirzadeh Saed , Appl Radiat Isot, 2016 May 3, Volume 114, p.19-27, (2016)

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