Strontium iodide
Basic information
- CAS
10476-86-5- Standard SMILES
[I-].[I-].[Sr+2]- InChIKey
KRIJWFBRWPCESA-UHFFFAOYSA-L- Molecular formula
- I2Sr
- Average molar mass
- 341.43 g/mol
- Monoisotopic mass
- 341.71456
Names & identifiers
- Preferred name
- Strontium iodide
- IUPAC
- strontium diiodide
- English name
- STRONTIUM IODIDE
- Molecular formula
- I2Sr
- Molecular weight
- 341.43
Names & synonyms
EINECS 233-972-1UNII-F6V5HOR0O5F6V5HOR0O5Strontium IodatumRefChem:57948233-972-110476-86-5Strontium iodideSTRONTIUM JODIDEstrontium;diiodideStrontium iodide anhydrousstrontium,diiodide
Show more names
SrI2Strontium diiodideSTRONTIUM (II) IODIDEstrontiumiodide(sri2)Strontium iodide (SrI2)ultradry,99.99%metalsbasisStrontium lodide AnhydrousStrontiumiodide,hexahydrate
StrontiumjodidStrontium iodide, anhydrousSCHEMBL3223633Strontium iodide, anhydrous, >=99.99% trace metals basisStrontium iodide, anhydrous, beads, -10 mesh, >=99.99% trace metals basis
Database identifiers
- CAS
10476-86-5- PubChem CID
- 25304
- EC Number
- 233-972-1
Properties
Computed structural properties
- Topological polar surface area
- 0 Ų
- Hydrogen bond donors
- 0
- Hydrogen bond acceptors
- 2
- Rotatable bonds
- 0
- Heavy atoms
- 3
- Formal charge
- 0
- Complexity
- 2.8
Physicochemical properties
- Melting point
- 515 °C · 515 °C (lit.)
- Boiling point
- 1773 °C/1 · 1773 °C/1 atm (lit.)
- Density
- 4.55 g/mL · 4.55 g/mL at 25 °C (lit.)
- form
- beads
- color
- White to pale yellow
- Specific Gravity
- 4.55 · 4.55
- Water Solubility
- Soluble in water and ethanol.
- Specific Heat Capacity
- 0.24 J/ · Cp(crystal): 0.24 J/(g·K), at 25℃
- Sensitive
- Hygroscopic
- Merck
- 14 · 14,8844
- InChI
- 1S/2HI.Sr/h2*1H;/q;;+2/p-2
- InChIKey
- KRIJWFBRWPCESA-UHFFFAOYSA-L
- SMILES
- I[Sr]I
- CAS DataBase Reference
- 10476 · 10476-86-5(CAS DataBase Reference)
- EWG's Food Scores
- 1 · 1
- FDA UNII
- 6 V5HOR0O5 · F6V5HOR0O5
- EPA Substance Registry System
Safety & regulation
Safety information is for reference only and does not replace the supplier’s Safety Data Sheet (SDS), applicable regulations, or professional assessment.
GHS classification
GHS Classification
Danger
H302 (33.8%): Harmful if swallowed [Warning Acute toxicity, oral]
P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P317, P321, P330, P363, P405, and P501 (click each P-code to see the statement)
Aggregated GHS information provided per 77 reports by companies from 4 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard information
Hazard Classes and CategoriesAcute Tox. 4 (33.8%)
Safety data
- F
- 3-8
- PPE
- Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
- wgk
- 3
- tsca
- TSCA listed
- rtecs
- WK9275000
- ridadr
- UN 3260 8/PG 2
- risk_code
- 14-34
- Signal word
- Danger
- Symbol(GHS)
- GHS05
- hazard_code
- C
- safety_code
- 22-26-27-36/37/39-45
- Storage Class
- 11 - Combustible Solids
- Hazard statements
- H318
- Hazard Classifications
- Eye Dam. 1
- Precautionary statements
- P280-P305+P351+P338+P310
Chemistry & industry
Uses & manufacturing
General Manufacturing InformationStrontium iodide (SrI2): ACTIVE
Applications
DescriptionStrontium iodide (SrI2) is an ionic, water-soluble, deliquescent compound that has been used in medicine as a substitute for potassium iodide. Strontium iodide crystals are colorless, transparent, hexagonal in structure, and have a bitter, saline taste. Soluble in 0.6 part of water at 15°C, they are also soluble in alcohol. Strontium iodide can be prepared by reacting strontium carbonate with hydroiodic acid: SrCO3＋2HI→SrI2＋H2O＋CO2 Strontium iodide turns yellow when exposed to air due to the formation of iodine at the surface of the crystals. At high temperatures (when in the presence of air), strontium iodide completely decomposes to form strontium oxide and free iodine. Several hydrates are known including SrI2·6H2O. This salt is a white crystalline substance composed of small plates. It decomposes in moist air due to its deliquescence. Its specific gravity varies from 4.415 g/cm3 to 4.549 g/cm3, depending upon how the crystals are formed. It loses water at 78°C and the anhydrate forms above 200°C. The melting point of SrI2 is 507°C and its boiling point is 645°C where it decomposes to the oxide and iodine.
UsesMedicine (source of iodine), intermediate.
UsesStrontium iodide (SrI2) is made by treating strontium carbonate with hydrochloric acid. It is used as a medicinal source of iodine.
UsesStrontium iodide is a yellowish granular powder made by treating strontium carbonate with hydriodic acid. It is soluble in water, alcohol, and ether. Strontium iodide was occasionally used to increase contrast in collodion emulsions.
Upstream & downstream products
Upstream raw materials
Related reactions
0 records
No reaction records under the current filter.
Compound notes
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