2021 wholesale price Pva Fiber - Manufacturer Good Price Butylal (Dibutoxymethane) CAS: 2568-90-3 – INCHEE
2021 wholesale price Pva Fiber - Manufacturer Good Price Butylal (Dibutoxymethane) CAS: 2568-90-3 – INCHEE Detail:
description
Applications of Butylal
- Formaldehyde dibutyl acetal is a halogen-free and less toxic solvent that can be used to solubilize commercial low-density polyethylene (LDPE) samples to analyze molecular weight distribution using gel permeation chromatography (GPC). It can also be used as a reactant to prepare butoxymethyltriphenylphosphonium iodide, which is used for carbon homologation and also as a useful key intermediate in organic synthesis.
- Preparation：A flask containing 15 gm (0.5 mole) of paraformaldehyde, 74 gm (1.0 mole) of η-butyl alcohol, and 2.0 gm of anhydrous ferric chloride is refluxed for 10 hr. The lower layer of 3-4 ml of material is discarded and then 50 ml of 10% aqueous sodium carbonate solution is added to remove the ferric chloride as ferric hydroxide. The product is shaken with a mixture of 40 ml of 20% hydrogen peroxide and 5 ml of 10% sodium carbonate solution at 45°C in order to remove any remaining aldehyde. The product is also washed with water, dried, and distilled from excess sodium metal to afford 62 gm (78%).
Specification of Butylal
|
Compound |
Specification |
|
Appearance |
Clear, colorless liquid |
|
Purity (GC) |
≥99% |
|
Moisture(K-F%) |
≤0.1% |
|
n-butyl alcohol (GC) |
≤0.75% |
|
Formaldehyde(GC) |
≤0.15% |
Packing of Butylal
170KG/drum
Storage should be at cool, dry and ventilate.
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