Strontium-90
Also known as 90Sr radioisotope, Strontium Sr-90, Strontium 90
Key facts
What buyers check first
- CAS number
- 10098-97-2
- Formula
- Sr
- Molar mass
- 89.91 g/mol
- HS code
- 284443
- Category
- Metals, alloys and elements
What is Strontium-90?
Plain description, key identifiers and synonyms
Strontium Sr-90 is a radioactive isotope of the heavy metal strontium, Strontium-90 is a by-product of uranium and plutonium fission. SR-90 is linked to bone, and other, cancers. Acting chemically in vivo like calcium, it tends to concentrate in bones and teeth. Used as a radioactive tracer in medical and agricultural studies, controlled amounts of strontium-90 have also been used as a treatment for bone cancer. (NCI04)
Identifiers
Registry numbers, names and line notations, tap to copy
- IUPAC name
- strontium-90
- CAS number
- 10098-97-2 CAS number cross-checked
- Molecular formula
- Sr
- UNII
- 5TZZ77Z4ER
- InChIKey
- CIOAGBVUUVVLOB-NJFSPNSNSA-N
- InChI
- InChI=1S/Sr/i1+2
- Canonical SMILES
- [Sr]
- Isomeric SMILES
- [90Sr]
Synonyms
- 90Sr radioisotope
- Strontium Sr-90
- Strontium 90
- Strontium, isotope of mass 90
- 90Sr
- (90Sr)strontium
- 90Sr isotope
- Isotope:90Sr
- 90Sr (isotope)
- Strontium, radioactive
- Strontium-90 isotope
- Isotope:Strontium-90
- Strontium Radioisotopes
Physical and chemical properties
Measured values and descriptors computed from the structure
Physical and chemical properties
Measured values, check the supplier specification for your grade
No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.
Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.
Computed descriptors
Calculated from the structure, useful for screening and formulation
| Molecular weight | 89.91 g/molcalc.Computed value |
|---|---|
| Exact mass | 89.9077 Dacalc.Computed value |
| LogP (octanol/water) | -0.38calc.Computed value |
| Topological polar surface area | 0 Ųcalc.Computed value |
| Hydrogen bond donors | 0calc.Computed value |
| Hydrogen bond acceptors | 0calc.Computed value |
| Rotatable bonds | 0calc.Computed value |
| Heavy atoms | 1calc.Computed value |
| Rings | 0calc.Computed value |
| Aromatic rings | 0calc.Computed value |
| Fraction sp3 carbons | 0calc.Computed value |
| Formal charge | 0calc.Computed value |
| Stereocentres | 0calc.Computed value |
Calculated for screening. Confirm critical figures with the supplier.
Safety and hazards
GHS classification summary, not a safety data sheet
No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.
GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.
Strontium-90 suppliers
Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings
Post one free request and suppliers who make or trade Strontium-90 can send you quotes. Your contact details stay private until you accept a quote.
Strontium-90 price
Indicative price range per kg from live supplier offers
Suppliers quote this chemical on request. Send one free request and compare quotes side by side.
Uses and applications
What the substance is used for, by industry and function
Antineoplastic (radiation source) (Sr-89).
The beta emission of strontium-90 and its progeny, yttrium-90, has found applications in industry, medicine, and research. The radiation of yttrium-90 is more penetrating than that of strontium. It is used with zinc sulfide in some luminescent paints. Implants of strontium-90 provide radiation therapy for the treatment of the pituitary gland and breast and nerve tissue. The radiation from strontium has been used in thickness gauges, level measurements, automatic control processes, diffusion studies of seawater, and a source of electrical power. Because strontium-90 is one of the long-lived and most energetic beta emitters, it might prove to be a good source of power in space vehicles, remote weather stations, navigational buoys, and similar long-life, remote devices.
Read more
Both strontium-89 and strontium-90 have been used in physical chemistry experiments and in biology as tags and tracers. (Strontium isotopes).
The radioactive isotope Strontium-89 (also known by the pharmaceutical brand name Metastro) is used as a cancer therapeutic to alleviate bone pain. Strontium-85 has been used in medical applications, such as radiologic imagining of bones, in minor commercial applications, such as thermoelectric power generation, as a beta-particle standard source, and in instruments that measure thickness and density of materials. (Strontium-89 and 85).
Radioisotope thermoelectric generators (RTGs) use heat generated by decay of radioactive isotopes to produce electric power. They have no moving parts and can operate for decades without refuelling. They are used as a power supply where frequent maintenance or refuelling is expensive or impractical. Most terrestrial RTGs are fuelled with strontium-90.
Industries and functions
How it is made
Strontium-85 can be produced by irradiation of rubidium-85 with accelerated protons or deuterons.
Radioactive strontium, strontium-89 and strontium-90, does not occur in nature, but is the direct result of anthropogenic activity. Strontium-89 and strontium-90 are formed during nuclear reactor operations and during nuclear explosions by the nuclear fission of uranium-235, uranium-238, or plutonium-239. (Radioactive strontium)
Regulatory status
Inventories, regulations and trade controls that list this substance
No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.
HS code and trade data
Customs classification and reported world trade statistics
Global trade
World import and export statistics for the HS code Strontium-90 is traded under.
Radioactive elements and isotopes and compounds other than those of subheading 284410…
- Canada32.1%
- Netherlands17.0%
- Germany11.4%
- United States37.8%
- Germany8.4%
- China5.8%
The HS code shown for Strontium-90 is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.
Frequently asked questions
Quick answers about Strontium-90, based on the data on this page
What is Strontium-90?
What is the CAS number of Strontium-90?
What is the molecular formula and weight of Strontium-90?
What is Strontium-90 used for?
Is Strontium-90 hazardous?
What is the HS code of Strontium-90?
Where can I buy Strontium-90?
What is the price of Strontium-90?
Guides for buyers
Practical guides that help when you source, ship or handle Strontium-90
- Article, SourcingHow to write an RFQ that gets fast and accurate quotesWhat suppliers need to quote quickly and comparably: exact product identity, quantity and packing, delivery terms, documents, samples and payment, with a ready to use template.Read
- Guide, Trade and logisticsShipping dangerous goods: UN numbers, classes and packing groupsHow the UN dangerous goods system works for chemicals, from the nine classes and UN numbers to packing groups, UN packaging marks, labels, documents and segregation.Read
- Guide, Trade and logisticsHS codes for chemicals and why they matterHow the Harmonized System classifies chemicals, the chapters that matter, the rules for chemically defined compounds and mixtures, and practical steps to find the right code.Read
Get quotes for Strontium-90
Embed this structure on your websiteShow code
Paste this code into your page to show the 2D structure of Strontium-90 with a 3D view, its CAS number where known and a link back to this page. Free to use with the link kept.
<iframe src="https://www.compoundlist.com/embed/structure/strontium-90-10098-97-2" title="Strontium-90 structure on CompoundList" width="360" height="420" style="border:1px solid #E7E2DA;border-radius:12px;max-width:100%" loading="lazy" referrerpolicy="strict-origin-when-cross-origin"></iframe>Explore more in Metals, alloys and elements or HS code 284443