TRIMETHYLSILYL ISOTHIOCYANATE
Synonym(s):Isothiocyanatotrimethylsilane
- CAS NO.:2290-65-5
- Empirical Formula: C4H9NSSi
- Molecular Weight: 131.27
- MDL number: MFCD00004797
- EINECS: 218-929-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:16:47
What is TRIMETHYLSILYL ISOTHIOCYANATE?
Chemical properties
clear colorless to light yellow liquid
The Uses of TRIMETHYLSILYL ISOTHIOCYANATE
Trimethylsilyl isothiocyanate is used as derivatizing reagent during the synthesis of amino acid thiohydantoins. It participates in ring opening reaction of N-substituted aziridines and cyclohexene oxide.
The Uses of TRIMETHYLSILYL ISOTHIOCYANATE
Trimethylsilyl isothiocyanate was used as derivatizing reagent during the synthesis of amino acid thiohydantoins.
General Description
Trimethylsilyl isothiocyanate (TMS-ITC) reacts with fullerene-mixed peroxide C60(O)(OOtBu)4 to yield isothiocyanate derivative C60(NCS)(OH)(OOtBu)4. TMS-ITC undergoes condensation with ethyl 2-benzylamino-5-methyl-3-phenylcyclopent-1-enecarboxylate to yield 1-benzyl-5-methyl-7-phenyl-2-thioxo-1,2,3,5,6,7-hexahydrocyclopentapyrimidin-4-one. It participates in ring opening reaction of N-substituted aziridines and cyclohexene oxide.
Purification Methods
The 1H NMR spectrum should have only one peak; if not purify it by repeated fractionation in an all-glass system using a 50cm (4mm internal diameter) column without packing. [Anderson J Am Chem Soc 69 3049 1947, Fehér & Blümcke Chem Ber 90 1934 1957, Neidleim & Hege Synthesis 51 1975, Beilstein 4 III 1861, 4 IV 4011.]
Properties of TRIMETHYLSILYL ISOTHIOCYANATE
| Melting point: | −32.8 °C(lit.) |
| Boiling point: | 143 °C(lit.) |
| Density | 0.931 g/mL at 25 °C(lit.) |
| vapor density | >1 (vs air) |
| refractive index | n |
| Flash point: | 95 °F |
| storage temp. | 2-8°C |
| form | liquid |
| Specific Gravity | 0.931 |
| Water Solubility | Reacts with water. |
| Sensitive | Moisture Sensitive |
| Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
| BRN | 1745262 |
| CAS DataBase Reference | 2290-65-5(CAS DataBase Reference) |
| EPA Substance Registry System | Isothiocyanatotrimethylsilane (2290-65-5) |
Safety information for TRIMETHYLSILYL ISOTHIOCYANATE
| Signal word | Danger |
| Pictogram(s) |
![]() Flame Flammables GHS02 ![]() Skull and Crossbones Acute Toxicity GHS06 ![]() Health Hazard GHS08 |
| GHS Hazard Statements |
H226:Flammable liquids H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H334:Sensitisation, respiratory H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P310:IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for TRIMETHYLSILYL ISOTHIOCYANATE
| InChIKey | XLTUPERVRFLGLJ-UHFFFAOYSA-N |
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