Holmium(III) nitrate

Names
Other names

Holmium trinitrate, Holmium nitrate

Identifiers

CAS Number

* anhydrous: 10168-82-8
* pentahydrate: 14483-18-2
* hexahydrate: 35725-31-6

3D model (JSmol)

* Interactive image
* pentahydrate: Interactive image
* hexahydrate: Interactive image

ChemSpider |

* anhydrous: 26948008
* pentahydrate: 21241428
* hexahydrate: 34196

EC Number |

* 233-438-8

PubChem CID

* pentahydrate: 25021754
* hexahydrate: 37257

CompTox Dashboard (EPA)

* pentahydrate: DTXSID80648469
* hexahydrate: DTXSID10189254

InChI

* InChI=1S/Ho.3NO3/c;3*2-1(3)4/q+3;3*-1

Key: WDVGLADRSBQDDY-UHFFFAOYSA-N

* pentahydrate: InChI=1S/Ho.3NO3.5H2O/c;3*2-1(3)4;;;;;/h;;;;5*1H2/q+3;3*-1;;;;;

Key: BJUGWWDCFYEYOA-UHFFFAOYSA-N

* hexahydrate: InChI=1S/Ho.3NO3.6H2O/c;3*2-1(3)4;;;;;;/h;;;;6*1H2/q+3;3*-1;;;;;;

Key: OMTYKYWUMGRKES-UHFFFAOYSA-N

SMILES

* [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[Ho+3]

* pentahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.[Ho+3]

* hexahydrate: [N+](=O)([O-])[O-].[N+](=O)([O-])[O-].[N+](=O)([O-])[O-].O.O.O.O.O.O.[Ho+3]

Properties

Chemical formula

| Ho(NO3)3
Molar mass | 350,95
Appearance  | Yellowish crystals
Melting point |  754 °C (1,389 °F; 1,027 K)

Solubility in water

| Soluble
Hazards
GHS pictograms |
GHS Signal word | Warning

GHS hazard statements

| H272, H315, H319, H335

GHS precautionary statements

| P210, P220, P221, P261, P264, P271, P280, P302+352, P304+340, P305+351+338, P312, P321, P332+313, P337+313, P362, P370+378, P403+233, P405, P501
Related compounds

Related compounds

| Terbium(III) nitrate

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Infobox references

Tracking categories (test):

* SizeSet

Holmium (III) nitrate is an inorganic compound, a salt of holmium and nitric acid with the chemical formula Ho(NO3)3.[1] The compound forms yellowish crystals, dissolves in water, also forms crystalline hydrates.[2]

## Contents

* 1 Synthesis
* 2 Physical properties
* 3 Chemical properties
* 4 Application
* 5 References

## Synthesis

Anhydrous salt is obtained by the action of nitrogen dioxide on holmium(III) oxide:

2Ho2O3+9N2O4 →150oC 4Ho(NO3)3+6NO

Effect of nitrogen dioxide on metallic holmium:

Ho+3N2O4 →200oC Ho(NO3)3+3NO

Reaction of holmium hydroxide and nitric acid:

Ho(OH)3+3NHO3 →150oC Ho(NO3)3+3H2O

## Physical properties

Holmium(III) nitrate forms yellowish crystals.

Forms a crystalline hydrate of the composition Ho(NO3)3•5H2O.[3]

Soluble in water and ethanol.

## Chemical properties

Hydrated holmitic nitrate thermally decomposes to form HoONO3 and decomposes to holmium oxide upon subsequent heating.

## Application

The compound is used for the production of ceramics and glass.

Also used to produce metallic holmium and as a chemical reagent.

## References

1. ↑ Лидин, Ростислав; Молочко, Вадим; Андреева, Лариса (2 February 2019) (in ru). Константы неорганических веществ. Справочник. Litres. p. 40. ISBN 978-5-04-077039-7. https://books.google.com/books?id=-cQ0DwAAQBAJ&dq=нитрат+гольмия&pg=PA40. Retrieved 18 August 2021.
2. ↑ "14483-18-2 - Holmium(III) nitrate pentahydrate, REacton®, 99.9% (REO) - 14588 - Alfa Aesar". Alfa Aesar. https://www.alfa.com/ru/catalog/014588/.
3. ↑ "Holmium(III) nitrate pentahydrate". Sigma Aldrich. https://www.sigmaaldrich.com/RU/ru/product/aldrich/325732.

* v
* t
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Holmium compounds

* HoBr3
* HoCl3
* Ho2O3
* Ho2Ti2O7

* v
* t
* e

Salts and covalent derivatives of the nitrate ion

HNO3 |  |  |  | He

|
|
|
|

LiNO3 | Be(NO3)2 | B(NO3)−4 | C  | NO−3,
NH4NO3 | O  | FNO3 | Ne
NaNO3 | Mg(NO3)2 | Al(NO3)3 | Si  | P  | S  | ClONO2 | Ar
KNO3 | Ca(NO3)2 | Sc(NO3)3 | Ti(NO3)4 | VO(NO3)3 | Cr(NO3)3 | Mn(NO3)2 | Fe(NO3)3,
Fe(NO3)2 | Co(NO3)2,
Co(NO3)3 | Ni(NO3)2 | Cu(NO3)2 | Zn(NO3)2 | Ga(NO3)3 | Ge  | As  | Se  | Br  | Kr
RbNO3 | Sr(NO3)2 | Y(NO3)3 | Zr(NO3)4 | Nb  | Mo  | Tc  | Ru  | Rh  | Pd(NO3)2 | AgNO3 | Cd(NO3)2 | In  | Sn  | Sb(NO3)3 | Te  | I  | Xe(NO3)2
CsNO3 | Ba(NO3)2 |  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt  | Au  | Hg2(NO3)2,
Hg(NO3)2 | Tl(NO3)3,
TlNO3 | Pb(NO3)2 | Bi(NO3)3
BiO(NO3) | Po  | At  | Rn
FrNO3 | Ra(NO3)2 |  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
La(NO3)3 | Ce(NO3)3,
Ce(NO3)4 | Pr  | Nd(NO3)3 | Pm  | Sm  | Eu(NO3)3 | Gd(NO3)3 | Tb(NO3)3 | Dy  | Ho  | Er  | Tm  | Yb  | Lu
Ac(NO3)3 | Th(NO3)4 | Pa  | UO2(NO3)2 | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No  | Lr

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*[CID]: Compound ID
*[EPA]: U.S. Environmental Protection Agency
*[H272]: May intensify fire: oxidizer
*[H315]: Causes skin irritation
*[H319]: Causes serious eye irritation
*[H335]: May cause respiratory irritation
*[P210]: Keep away from heat/sparks/open flames/hot surfaces – No smoking
*[P220]: Keep/Store away from clothing/…/combustible materials
*[P221]: Take any precaution to avoid mixing with combustibles
*[P261]: Avoid breathing dust/fume/gas/mist/vapours/spray
*[P264]: Wash … thoroughly after handling
*[P271]: Use only outdoors or in a well-ventilated area
*[P280]: Wear protective gloves/protective clothing/eye protection/face protection
*[P302+352]: IF ON SKIN: Wash with soap and water
*[P304+340]: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
*[P305+351+338]: IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do – continue rinsing
*[P312]: Call a POISON CENTER or doctor/physician if you feel unwell
*[P321]: Specific treatment (see … on this label)
*[P332+313]: If skin irritation occurs: Get medical advice/attention
*[P337+313]: Get medical advice/attention
*[P362]: Take off contaminated clothing and wash before reuse
*[P370+378]: In case of fire: Use … for extinction
*[P403+233]: Store in a well ventilated place. Keep container tightly closed
*[P405]: Store locked up
*[P501]: Dispose of contents/container to …
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