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Neodymium(III) hydroxide

Identifiers
CAS Number	16469-17-3
3D model (JSmol)	Interactive image
ChemSpider	77047
ECHA InfoCard	100.036.816
EC Number	240-514-4
PubChem CID	85433
InChI InChI=1S/Nd.3H2O/h;3*1H2/q+3;;;/p-3Key: ZBAQHMBLDSQPHC-UHFFFAOYSA-K
SMILES ...
Properties
Chemical formula	Nd(OH)3
Molar mass	195.266
Appearance	rose solid
Related compounds
Other anions	neodymium(III) oxide
Other cations	praseodymium(III) hydroxide samarium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references

Neodymium(III) hydroxide is an insoluble inorganic compound with the chemical formula Nd(OH)₃.

Preparation

Neodymium(III) nitrate and ammonia water will react to produce neodymium(III) hydroxide:

Nd(NO₃)₃ + 3 NH₃·H₂O → Nd(OH)₃↓ + 3 NH₄NO₃

If the amount of Nd(NO₃)₃ is 40g/L, the amount of ammonia water needed is 0.50 mol/L. The ammonia water is mixed into the Nd(NO₃)₃ solution at the speed of 1.5mL/min, and polyethylene glycol is used to control pH. The process will produce neodymium(III) hydroxide powder with grain size ≤1μm.

Chemical properties

Neodymium(III) hydroxide can react with acid and produce neodymium salts:

Nd(OH)₃ + 3 H → Nd + 3 H₂O

For example, to create neodymium acetate with neodymium(III) hydroxide:

Nd(OH)₃ + 3CH₃COOH → Nd(CH₃COO)₃ + 3H₂O

See also

• Neodymium
• Hydroxide
• Lanthanide

References

1. 《无机化学丛书》. 第七卷 钪 稀土元素. 易宪武 等主编. 科学出版社. P_168~171. (2)氢氧化物
2. PubChem. "Neodymium hydroxide (Nd(OH)3)". pubchem.ncbi.nlm.nih.gov. Retrieved 2022-11-24.
3. Elements, American. "Neodymium Hydroxide". American Elements. Retrieved 2022-11-24.
4. 《无机化合物制备手册》. 朱文祥 主编. 化学工业出版社. 【III-119】氢氧化钕（neodymium hydroxide）
5. 刘治平, 王晓铁. 氢氧化镧和氢氧化钕微粉的制备. 《稀土》. Vol.25 No.3 Jun.2004
6. Patnaik, Pradyot (2003). Handbook of inorganic chemicals. McGraw-Hill handbooks. New York, NY: McGraw Hill Education. pp. 639–640. doi:10.5860/choice.40-6428. ISBN 978-0-07-049439-8.

• Neodymium(III) compounds
• Hydroxides