7446-16-4
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Basic information
- Product Name: RADIUMSULFATE
- Synonyms: RADIUMSULFATE;Sulfuric acid radium salt
- CAS NO:7446-16-4
- Molecular Formula: RaSO4
- Molecular Weight: 322.0891
- EINECS: N/A
- Product Categories: N/A
- Mol File: 7446-16-4.mol
- Article Data: 0
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Chemical Properties
- Melting Point: N/A
- Boiling Point: 330°Cat760mmHg
- Flash Point: °C
- Appearance: /white crystals
- Density: g/cm3
- Vapor Pressure: 3.35E-05mmHg at 25°C
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- Water Solubility: insoluble H2O, acids [HAW93]
- CAS DataBase Reference: RADIUMSULFATE(CAS DataBase Reference)
- NIST Chemistry Reference: RADIUMSULFATE(7446-16-4)
- EPA Substance Registry System: RADIUMSULFATE(7446-16-4)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 7446-16-4(Hazardous Substances Data)
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7446-16-4 Usage
Description
Radium sulfate has the molecular formula of RaSO4 and the molecular weight of 322.0626 g/mol. It can be prepared by dissolving radium oxide in sodium sulfate solution: RaO+Na2SO4+H2O ? RaSO4+NaOH Radium sulfate is insoluble in water with a solubility product of 3.66×10-11. The solubility of radium sulfate would appear as at least 100-fold less than barium sulfate. Thus, it is the most insoluble sulfate known. Its CAS Number is 7446-16-4. It appears as white crystals. Since radium is a decay product in the 238U series which then allows radon to accumulate in household basements, it is RaSO4 that has received some attention in the scientific literature.Chemical Properties
white, rhomb crystal(s) when pure, else colored yellow, orange, pink; radioactive [HAW93] [CRC10]Uses
Radium sulfate (RaSO4) is the most insoluble sulfate known in chemistry and is created when radium combines with a sulfate ion (Ra + H2SO4 → RaSO4 + H2↑).Check Digit Verification of cas no
The CAS Registry Mumber 7446-16-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,4 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.Calculate Digit Verification of CAS Registry Number 7446-16:
(6*7)+(5*4)+(4*4)+(3*6)+(2*1)+(1*6)=104
104 % 10 = 4
So 7446-16-4 is a valid CAS Registry Number.
InChI:InChI=1/H2O4S.Ra/c1-5(2,3)4;/h(H2,1,2,3,4);/p-2
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RADIUMSULFATE
