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(CAS RN:17887-80-8 Product Number:B3563)



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Product Number B3563

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Purity/Analysis Method >98.0%(GC)
Storage Temperature
M.F. / M.W. C9H24O2Si2=220.46
CAS RN 17887-80-8
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Purity(GC) min. 98.0 %
Specific gravity (20/20) 0.8400 to 0.8440
Refractive index n20/D 1.4040 to 1.4080

Data of Reference

bp 77°C/15mmHg(lit.)


Beilstein 4(4)400
Reaxys-RN 1748398
PubChem SID 125307383


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.

Transport Information

HS Number 2931399090


Acetalization of Carbonyl Compounds

Typical Procedure: To a solution of carbonyl compound (2 mmol), 1,3-bis(trimethylsilyloxy)propane (2.6–10 mmol) in anhydrous CH2Cl2 (10 mL), NBS (0.06–0.14 mmol) is added, and the resulting solution is stirred at room temperature. After completion of the reaction (TLC or GC), a cold aq. solution of NaOH (5%, 25 mL) is added and the mixture is extracted with CH2Cl2 (3 × 15 mL). The organic extracts are washed successively with NaOH (5%, 15 mL), water (4 × 15 mL) and dried over anhydrous Na2SO4. Evaporation of the solvent under reduced pressure gives almost pure products. Further purification is carried out by vacuum distillation, re-crystallization in appropriate solvent or flash chromatography using appropriate eluent to afford pure acetals.


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