690-52-8
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Basic information
- Product Name: tri-tert-butoxysilanethiol
- Synonyms:
- CAS NO:690-52-8
- Molecular Formula:
- Molecular Weight: 280.504
- EINECS: N/A
- Product Categories: N/A
- Mol File: 690-52-8.mol
- Article Data: 0
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Chemical Properties
- Melting Point: N/A
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: N/A
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- CAS DataBase Reference: tri-tert-butoxysilanethiol(CAS DataBase Reference)
- NIST Chemistry Reference: tri-tert-butoxysilanethiol(690-52-8)
- EPA Substance Registry System: tri-tert-butoxysilanethiol(690-52-8)
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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: 690-52-8(Hazardous Substances Data)
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690-52-8 Usage
Physical properties
bp 113–115 °C/35 mmHg);1 95 °C/15 mmHg.Uses
Tri(t-butoxy)silanethiol is used as an efficient hydrogen donor and catalyst in the context of polarity reversal catalysis in radical chain reactions.Preparation
this reagent can be prepared by alcoholysis of silicon disulfide (SiS2).1,2 Representative procedure: powdered silicon disulfide (95% pure; 20.2 g, 0.21 mol) was charged into a 100 ml round-bottomed flask containing a robust stirrer bar and equipped with a reflux condenser. t-Butyl alcohol (60.0 g, 0.81 mol) was added and the mixture was stirred and heated under reflux under nitrogen for 72 h. The cooled reaction mixture was filtered through Celite to remove unreacted silicon disulfide and the filter cake was washed with diethyl ether. Excess of alcohol and diethyl ether were removed from the filtrate by rotary evaporation and the residual oil was distilled under reduced pressure to give the silanethiol (18.1 g, 31%) as a colorless liquid, bp 95 °C/15 mmHg, 113–115 °C/35 mmHg).Check Digit Verification of cas no
The CAS Registry Mumber 690-52-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,9 and 0 respectively; the second part has 2 digits, 5 and 2 respectively.Calculate Digit Verification of CAS Registry Number 690-52:
(5*6)+(4*9)+(3*0)+(2*5)+(1*2)=78
78 % 10 = 8
So 690-52-8 is a valid CAS Registry Number.
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tri-tert-butoxysilanethiol
