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Sigma-Aldrich

Thorium nitrate hydrate

99% (T), ~4 mol/mol water

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About This Item

Linear Formula:
Th(NO3)4 · aq
CAS Number:
13823-29-5
Molecular Weight:
480.06 (anhydrous basis)
EC Number:
237-514-1
MDL number:
MFCD03094924
UNSPSC Code:
12352302
PubChem Substance ID:
57653327

Assay

99% (T)

form

solid

reaction suitability

reagent type: catalyst
core: thorium

extent of labeling

3.93 kBq/g specific activity

impurities

~4 mol/mol water

SMILES string

O.[Th+4].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O

InChI

1S/4NO3.H2O.Th/c4*2-1(3)4;;/h;;;;1H2;/q4*-1;;+4

InChI key

PRFFJYANKYMDRN-UHFFFAOYSA-N

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Other Notes

Regulations require a license for the sale of radioactive substances in Switzerland. Swiss customers are kindly requested when ordering, to include their license number, issued by the Swiss Public Health Authorities.
Sales restrictions may apply.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Irrit. 2 - Ox. Sol. 2 - Skin Irrit. 2 - STOT RE 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

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Pius O Adelani et al.
Inorganic chemistry, 49(12), 5701-5705 (2010-05-15)
The hydrothermal reactions of thorium nitrate and uranyl acetate with carboxyphenylphosphonic acid and HF result in the formation of ThF(2)(PO(3)C(6)H(4)CO(2)H) and UO(2)(PO(3)HC(6)H(4)CO(2)H)(2).2H(2)O, respectively. ThF(2)(PO(3)C(6)H(4)CO(2)H) adopts a pillared structure constructed from thorium oxyfluoride layers built from [ThO(4)F(4)] units that are bridged
O V Raskosha et al.
Radiatsionnaia biologiia, radioecologiia, 45(6), 744-750 (2006-02-04)
We studied the effects of both: of the separate and of the combined exposure to gamma-radiation (absorbed doses for 30 days were 1.4-1.8 cGy, for 90 days were 4.3-5.4 cGy) and 232Th nitrate (in concentrations 6.0; 20.0 and 60.0 mg/l)
T I Evseeva et al.
Radiatsionnaia biologiia, radioecologiia, 40(4), 456-461 (2000-10-14)
The action of 232Th-nitrate in concentration 0.09, 0.18 and 0.36 mg/l (counting on 232Th ion) on water cultures of Tradescantia (clone 02) was investigated. It was found that all investigated concentrations of 232Th showed statistically significant genotoxic effect and increased
V Jobbágy et al.
Radiation protection dosimetry, 141(4), 440-443 (2010-09-11)
Thoron and progeny are decay products of (232)Th with a great impact on human health. The release of thoron gas from the mining and milling of thorite, monazite and other major thorium ores has been recognised as a potential radiological
T I Evseeva et al.
Tsitologiia, 43(8), 803-808 (2001-10-17)
Effects of separate and combined action of 232Th and Cd on Allium cepa root tip cells were investigated. It has been shown that cytogenetic effects of 232Th results mainly from its ability to induce genome damages. Cadmium in the examined
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