Strontium nitrate

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| Verifiedfields = changed

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| verifiedrevid = 477000320

| ImageFile = Sr(NO3)2.png

| ImageFile1 = Strontium-nitrate-unit-cell-3D-balls.png

| ImageSize =

| IUPACName = Strontium nitrate

| OtherNames =

| Section1 = {{Chembox Identifiers

| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}

| ChemSpiderID = 23231

| UNII_Ref = {{fdacite|correct|FDA}}

| UNII = BDG873AQZL

| InChI = 1/2NO3.Sr/c2*2-1(3)4;/q2*-1;+2

| InChIKey = DHEQXMRUPNDRPG-UHFFFAOYAG

| SMILES = [Sr+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O

| StdInChI_Ref = {{stdinchicite|correct|chemspider}}

| StdInChI = 1S/2NO3.Sr/c2*2-1(3)4;/q2*-1;+2

| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}

| StdInChIKey = DHEQXMRUPNDRPG-UHFFFAOYSA-N

| CASNo = 10042-76-9

| CASNo_Ref = {{cascite|correct|CAS}}

| PubChem = 24848

| EINECS = 233-131-9

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| Section2 = {{Chembox Properties

| Formula = Sr(NO3)2

| MolarMass = 211.630 g/mol (anhydrous)
283.69 g/mol (tetrahydrate)

| Appearance = white crystalline solid

| Density = 2.986 g/cm3 (anhydrous)
2.20 g/cm3 (tetrahydrate)Patnaik, Pradyot (2002). Handbook of Inorganic Chemicals. McGraw-Hill, {{ISBN|0-07-049439-8}}

| MeltingPtC = 570

| MeltingPt_notes = (anhydrous)
100 °C, decomposes (tetrahydrate)

| BoilingPtC = 645

| BoilingPt_notes = decomposes

| Solubility = anhydrous:
710 g/L (18 °C)
660 g/L (20 °C)


tetrahydrate:
604.3 g/L (0 °C)
2065 g/L (100 °C)

| SolubleOther = soluble in ammonia
very slightly soluble in ethanol, acetone
insoluble in nitric acid

| MagSus = −57.2·10−6 cm3/mol

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| Section3 = {{Chembox Structure

| CrystalStruct = cubic (anhydrous)
monoclinic (tetrahydrate)

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| Section7 = {{Chembox Hazards

| ExternalSDS = [http://www.sciencelab.com/msds.php?msdsId=9927283]

| MainHazards = Irritant

| NFPA-H = 2

| NFPA-F = 0

| NFPA-R = 0

| NFPA-S = OX

| FlashPt = Non-flammable

| LD50 = 2750 mg/kg (rat, oral)

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| Section8 = {{Chembox Related

| OtherAnions = Strontium sulfate
Strontium chloride

| OtherCations = Beryllium nitrate
Magnesium nitrate
Calcium nitrate
Barium nitrate

}}

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Strontium nitrate is an inorganic compound composed of the elements strontium, nitrogen and oxygen with the formula Sr(NO3)2. This colorless solid is used as a red colorant and oxidizer in pyrotechnics.

Preparation

Strontium nitrate is typically generated by the reaction of nitric acid on strontium carbonate.{{Cite book | doi = 10.1002/9780470132340.ch4 |author1=Ward, R. |author2=Osterheld, R. K. |author3=Rosenstein, R. D. |chapter=Strontium Sulfide and Selenide Phosphors | title = Inorganic Syntheses | year = 1950 | volume = 3 | pages = 11–23 | series = Inorganic Syntheses | isbn = 978-0-470-13234-0 }}

: 2 HNO3 + SrCO3 → Sr(NO3)2 + H2O + CO2

File:Strontium Carbonate and Nitric acid.jpg

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Uses

Like many other strontium salts, strontium nitrate is used to produce a rich red flame in fireworks and road flares. The oxidizing properties of this salt are advantageous in such applications.MacMillan, J. Paul; Park, Jai Won; Gerstenberg, Rolf; Wagner, Heinz; Köhler, Karl and Wallbrecht, Peter (2002) "Strontium and Strontium Compounds" in Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH, Weinheim. {{doi|10.1002/14356007.a25_321}}

Strontium nitrate can aid in eliminating and lessening skin irritations. When mixed with glycolic acid, strontium nitrate reduces the sensation of skin irritation significantly better than using glycolic acid alone.{{cite journal|vauthors=Zhai H, Hannon W, Hahn GS, Pelosi A, Harper RA, Maibach HI |title = Strontium nitrate suppresses chemically-induced sensory irritation in humans|year=2000|volume=42|pages=98–100| pmid = 10703633|issue=2|journal=Contact Dermatitis|doi=10.1034/j.1600-0536.2000.042002098.x| s2cid=25910851 }}

Biochemistry

As a divalent ion with an ionic radius similar to that of Ca2+ (1.13 Å and 0.99 Å respectively), Sr2+ ions resembles calcium's ability to traverse calcium-selective ion channels and trigger neurotransmitter release from nerve endings. It is thus used in electrophysiology experiments.

References