Strontium nitrate

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Strontium nitrate
Strontium nitrate.png
Names
IUPAC name
Strontium nitrate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.030.107
EC Number 233-131-9
UNII
Properties
Sr(NO3)2
Molar mass 211.630 g/mol (anhydrous)
283.69 g/mol (tetrahydrate)
Appearance white granular solid
Density 2.986 g/cm3 (anhydrous)
2.20 g/cm3 (tetrahydrate)[1]
Melting point 570 °C (1,058 °F; 843 K) (anhydrous)
100 °C, decomposes (tetrahydrate)
Boiling point 645 °C (1,193 °F; 918 K) decomposes
anhydrous:
710 g/L (18 °C)
660 g/L (20 °C)
tetrahydrate:
604.3 g/L (0 °C)
2065 g/L (100 °C)
Solubility soluble in ammonia
very slightly soluble in ethanol, acetone
insoluble in nitric acid
−57.2·10−6 cm3/mol
Structure
cubic (anhydrous)
monoclinic (tetrahydrate)
Hazards
Main hazards Irritant
Safety data sheet [1]
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point Non-flammable
Lethal dose or concentration (LD, LC):
2750 mg/kg (rat, oral)
Related compounds
Other anions
Strontium sulfate
Strontium chloride
Other cations
Beryllium nitrate
Magnesium nitrate
Calcium nitrate
Barium nitrate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

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

Preparation[edit]

Strontium nitrate is typically generated by the reaction of nitric acid on strontium carbonate.[2]

2 HNO3 + SrCO3 → Sr(NO3)2 + H2O + CO2
The reaction of nitric acid and strontium carbonate to form strontium nitrate

.

Uses[edit]

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.[3]

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.[4]

Biochemistry[edit]

As a divalent ion with an ionic radius similar to that of Ca2+ (1.13 vs. 0.99 A, 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.

Popular Culture[edit]

In his short story "A Germ Destroyer," Rudyard Kipling refers to strontium nitrate as the main ingredient of the titular fumigant

References[edit]

  1. ^ Patnaik, Pradyot (2002). Handbook of Inorganic Chemicals. McGraw-Hill, ISBN 0-07-049439-8
  2. ^ Ward, R.; Osterheld, R. K.; Rosenstein, R. D. (1950). "Strontium Sulfide and Selenide Phosphors". Inorg. Synth. Inorganic Syntheses. 3: 11–23. ISBN 978-0-470-13234-0. doi:10.1002/9780470132340.ch4. 
  3. ^ 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
  4. ^ Zhai H, Hannon W, Hahn GS, Pelosi A, Harper RA, Maibach HI (2000). "Strontium nitrate suppresses chemically-induced sensory irritation in humans". Contact dermatitis. 42 (2): 98–100. PMID 10703633. doi:10.1034/j.1600-0536.2000.042002098.x. 
Salts and covalent derivatives of the Nitrate ion
HNO3 He
LiNO3 Be(NO3)2 B(NO3)4 C N 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 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 Pm Sm Eu Gd(NO3)3 Tb 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