HHomeBackground Color:He
LiBeStrontium Pictures PageBlack White GrayBCNOFNe
NaMgStrontium Technical DataAlSiPSClAr
KCaStrontium Isotope DataScTiVCrMnFeCoNiCuZnGaGeAsSeBrKr
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeIXe
CsBaLaCePrNdPmSmEuGdTbDyHoErTmYbLuHfTaWReOsIrPtAuHgTlPbBiPoAtRn
FrRaAcThPaUNpPuAmCmBkCfEsFmMdNoLrRfDbSgBhHsMtDsRgCnUutUuqUupUuhUusUuo
Strontium     

Strontium

Atomic Weight 87.62
Density 2.63 g/cm3
Melting Point 777 °C
Boiling Point 1382 °C
Full technical data

Strontium is often thought of as radioactive, because Sr-90 is a component of nuclear fallout. In fact normal strontium is not radioactive and is used in household products such as safe glow-in-the-dark paint.

Scroll down to see examples of Strontium.
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!
Strontium Strontium toothpaste

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Strontium toothpaste.
From the official Sensodyne UK website:
Sensodyne Mint and Sensodyne Original Toothpaste
These Sensodyne products contain Strontium Acetate and Strontium Chloride respectively.

Beneath your tooth enamel is a layer called dentine, made from thousands of microscopic tubes or tubules. When the nerve endings within these tubules are exposed to triggers like cold drinks, you will feel short, sharp pains. Strontium Acetate and Strontium Chloride help block the tubules, preventing the nerve from being stimulated. Every time you brush with a Sensodyne paste containing Strontium Acetate or Strontium Chloride you are building up a barrier to painful stimuli. Always read the label.

This Mint flavor variety contains Strontium Acetate.
Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 29 April, 2009
Text Updated: 30 April, 2009
Price: Donated
Size: 7"
Purity: <1%
Strontium Strontium lactate

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Strontium lactate.
Antique bottle of strontium lactate.
Source: eBay seller crabbybeans
Contributor: Theodore Gray
Acquired: 24 March, 2009
Text Updated: 24 March, 2009
Price: $8
Size: 4"
Purity: 49.5%
Strontium Bone-building supplements

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Bone-building supplements.
Some people promote the use of strontium as a dietary supplement to promote bone growth. The efficacy of this is disputed.
Source: eBay seller vitamaker
Contributor: Theodore Gray
Acquired: 11 March, 2009
Text Updated: 12 March, 2009
Price: $12
Size: 0.5"
Purity: <50%
Strontium Glow in the dark paint panel

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Glow in the dark paint panel.
This is a clever little toy. It's a picture frame with two pieces of glass mounted about 1/8" apart, with the gap about half filled with europium activated strontium aluminate luminous powder (the kind you use to make glow in the dark paint). The powder does not glow on its own, but if you shine a light on it, it glows for a few minutes. Using a small LED flashlight (blue or UV is best) you can "write" on it in light, just like you can write on walls painted with luminous paint.
But then you get to the clever part: After writing something, or just exposing the whole panel to bright light, you can tip it and make the powder cascade down, taking the luminous portions with it. If you've exposed the whole panel you get interesting patterns that look like rock strata, alternating light and dark. (Only the top surface of powder is exposed, and when you mix it up you get layers of dark and glowing powder.)
I think the source I list is correct, but I've had this thing so long I no longer remember exactly who I got it from. The date listed is the date when it was photographed and added to the collection officially.
Source: eBay seller teddp
Contributor: Theodore Gray
Acquired: 9 May, 2007
Text Updated: 12 May, 2007
Price: Donated
Size: 7"
Purity: 53%
Sample Group: Powders
Strontium Assorted glow-in-the-dark paints

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Assorted glow-in-the-dark paints.
This lovely array of glow-in-the-dark (phosphorescent) powders illustrates the range of colors and the brightness of modern luminous paints. Green and aqua are europium doped strontium aluminate, the brightest of all the modern phosphorescent powders. Blue is a alkali earth silicate, while red and orange are older, noticeably less bright zinc sulfides. (The difference in brightness is so great it was difficult to get a photograph that showed the glowing of the zinc sulfide without overexposing the other colors!) The powder packets are meant to be mixed with paint, nail polish, or whatever, rendering them luminous. The bottle in the back is ready-made paint, while the small tub is a heat-and-dip powder.
This set was kindly donated by Ready Set Glo: Visit their website at www.readysetglo.com or their eBay store.
(The "purity" listed below doesn't mean a whole lot since this is a mixture of several different compounds: I'm just indicating that this sample is not a simple element but rather a mixed compound.)
Source: Ready Set Glo
Contributor: Ready Set Glo
Acquired: 15 August, 2004
Text Updated: 11 August, 2007
Price: Donated
Size: 4"
Purity: <50%
Strontium Dendritic crystal

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Dendritic crystal.
Dendritic crystals ampouled under paraffin oil and argon.

I chose this sample to represent its element in my Photographic Periodic Table Poster. The sample photograph includes text exactly as it appears in the poster, which you are encouraged to buy a copy of.
Periodic Table Poster

Source: Frank Liebscher
Contributor: Frank Liebscher
Acquired: 28 January, 2004
Text Updated: 4 May, 2007
Price: Donated
Size: 1"
Purity: 99.99%
Strontium Sample from the Everest Set

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Sample from the Everest Set.
Up until the early 1990's a company in Russia sold a periodic table collection with element samples. At some point their American distributor sold off the remaining stock to a man who is now selling them on eBay. The samples (except gases) weigh about 0.25 grams each, and the whole set comes in a very nice wooden box with a printed periodic table in the lid.

To learn more about the set you can visit my page about element collecting for a general description and information about how to buy one, or you can see photographs of all the samples from the set displayed on my website in a periodic table layout or with bigger pictures in numerical order.

Source: Rob Accurso
Contributor: Rob Accurso
Acquired: 7 February, 2003
Text Updated: 29 January, 2009
Price: Donated
Size: 0.2"
Purity: >99%
Strontium Real strontium

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Real strontium.
Strontium metal is hard to get. In fact, it was in the very last group of elements I was able to acquire to complete my collection. It was donated by the extremely kind Max Whitby of the The Red Green & Blue Company, which sells a complete collection of elements.

They sell a very nice element collection in several versions. Max Whitby, the director of the company, very kindly donated a complete set to the periodic table table.

To learn more about the set you can visit my page about element collecting for a general description or the company's website which includes many photographs and pricing details. I have two photographs of each sample from the set: One taken by me and one from the company. You can see photographs of all the samples displayed in a periodic table format: my pictures or their pictures. Or you can see both side-by-side with bigger pictures in numerical order.

The picture on the left was taken by me. Here is the company's version (there is some variation between sets, so the pictures sometimes show different variations of the samples):


Source: Max Whitby of RGB
Contributor: Max Whitby of RGB
Acquired: 25 January, 2003
Text Updated: 11 August, 2007
Price: Donated
Size: 0.5"
Purity: 99%
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!
Strontium Strontium chloride from old chemistry set

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Strontium chloride from old chemistry set.
This bottle is from a 1950's chemistry set I got on eBay after consulting this trusty reference book about radioactive collectables. It's an "ATOMIC ENERGY" set (that kind of thing was big in the '50s), but it also includes an assortment of standard-issue chemistry set chemicals. I'm listing the strontium bottle mainly because I don't have any other good samples of strontium yet.

According to the book's table of going rates for these things, I got a good deal on the chemistry set, though it is not in perfect condition and is missing some components. Modern chemistry sets are pretty wimpy, but I have to say that, aside from the uranium ore and the radium, this set is pretty tame as well. It even proudly claims to contain "no dangerous or explosive chemicals". I mean really, where's the fun in that? Here's a picture of the set:
Chemcraft Chemistry Set

Source: eBay seller 6tomcat
Contributor: Theodore Gray
Acquired: 10 January, 2003
Price: $58/chemistry set
Size: 1"
Purity: 55%
Strontium Glow in the dark powder

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Glow in the dark powder.
This is strontium aluminate activated with europium. It's a very good glow-in-the-dark material, of the type you expose to light to charge up. It definitely works very nicely in that capacity, and can be charged in just a few minutes under fluorescent light. I got a sample of three different colors on eBay: The seller offers larger quantities and different formulations besides what he sells on eBay.
Not to be confused with our tritium glowing samples, which use the radioactive decay of tritium to glow for 10 or 20 years without any external input whatsoever.
Source: eBay seller teddp
Contributor: Theodore Gray
Acquired: 5 September, 2002
Price: $12
Size: 1"
Purity: 53%
Sample Group: Powders
Strontium Strontium Titanate fake diamond

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Strontium Titanate fake diamond.
Before the widespread use of cubic zirconia as fake diamond, strontium titanate was more popular. It is, however, much softer than diamond, and much more expensive that cubic zirconia.
I like it because it's a pretty use of strontium.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 11 March, 2009
Text Updated: 12 March, 2009
Price: $20
Size: 0.25"
Composition: SrTiO3
Strontium Strontium aluminum master alloy rod

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Strontium aluminum master alloy rod.
Master alloys are used to add small amounts of alloying agents to a pot of melted metal. They contain a much larger concentration of the agent pre-mixed with the base metal you want to amend. In this case it's somewhere between 10% and 30% strontium mixed into aluminum (the seller wasn't sure what grade of strontium aluminum the rods are).
Source: eBay seller consiliumdesigns
Contributor: Theodore Gray
Acquired: 28 February, 2009
Text Updated: 1 March, 2009
Price: $5
Size: 12"
Composition: SrAl
Strontium Celestine

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Celestine.
Description from the source:
Celestine (Sr SO4 orth.), Sakoany Mine, Mahajanga Province, Madagascar. Massive with some face. 3x2x1,4 cm; 12 g;.
Source: Simone Citon
Contributor: John Gray
Acquired: 27 December, 2008
Text Updated: 28 December, 2008
Price: Trade
Size: 1.2"
Composition: SrSO4
Strontium Photo Card Deck of the Elements

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Photo Card Deck of the Elements.
In late 2006 I published a photo periodic table and it's been selling well enough to encourage me to make new products. This one is a particularly neat one: A complete card deck of the elements with one big five-inch (12.7cm) square card for every element. If you like this site and all the pictures on it, you'll love this card deck. And of course if you're wondering what pays for all the pictures and the internet bandwidth to let you look at them, the answer is people buying my posters and cards decks. Hint hint.
Source: Theodore Gray
Contributor: Theodore Gray
Acquired: 19 November, 2008
Text Updated: 21 November, 2008
Price: $35
Size: 5"
Composition: HHeLiBeBCNOFNeNaMg AlSiPSClArKCaScTiVCrMn FeCoNiCuZnGaGeAsSeBrKr RbSrYZrNbMoTcRuRhPdAg CdInSnSbTeIXeCsBaLaCePr NdPmSmEuGdTbDyHoErTm YbLuHfTaWReOsIrPtAuHgTl PbBiPoAtRnFrRaAcThPaUNp PuAmCmBkCfEsFmMdNoLrRf DbSgBhHsMtDsRgUubUutUuq UupUuhUusUuo
Strontium Celestine from Jensan Set

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Celestine from Jensan Set.
This sample represents strontium in the "The Grand Tour of the Periodic Table" mineral collection from Jensan Scientifics. Visit my page about element collecting for a general description, or see photographs of all the samples from the set in a periodic table layout or with bigger pictures in numerical order.
Source: Jensan Scientifics
Contributor: Theodore Gray
Acquired: 19 November, 2008
Text Updated: 19 November, 2008
Price: Anonymous
Size: 1"
Composition: SrSO4
Strontium Strontianite

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Strontianite.
Description from the source:
Strontianite (Sr CO3 orth.), Germany. Crystalline mass. 2,5x2x1,5 cm; 15 g with box.
Source: Simone Citon
Contributor: John Gray
Acquired: 30 October, 2008
Text Updated: 31 October, 2008
Price: Trade
Size: 1"
Composition: SrCO3
Strontium Celestine

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Celestine.
Description from the source:
Celestine (Sr SO4 orth.), Sakoany Mine, Mahajanga Province, Madagascar. Nice lustrpus specimen. 3x3x1,5 cm; 10 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 26 September, 2008
Text Updated: 29 September, 2008
Price: Trade
Size: 1.2"
Composition: SrSO4
The Elements book Mad Science book Periodic Table Poster  Click here to buy a book, photographic periodic table poster, card deck, or 3D print based on the images you see here!