POLY(VINYL FORMAL)
- CAS NO.：9003-33-2
- Empirical Formula: C5H8O2
- Molecular Weight: 100.11582
- MDL number: MFCD00084463
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-10-22 15:21:50
What is POLY(VINYL FORMAL)?
The Uses of POLY(VINYL FORMAL)
It is used in the anomalous sorption and pervaporation of aqueous organic mixtures by poly(vinyl acetal) membranes. Poly(vinyl formal) is mainly used in three general applications wire coatings, surface coatings and adhesives. The first and extensive application of poly(vinyl formal) is in the manufacture of a tough, adhesive and heat resistant wire enamel.
Preparation
Poly(vinyl formal) was developed by General Electric as a wire coating and the early process involved direct reaction of a mixture of poly(vinyl acetate), glacial acetic acid, formalin and concentrated sulfuric acid at 70°C. After the desired degree of polymerization is obtained, ammonium hydroxide is added to bring the pH to about 9-10. The reaction mixture is poured into water to precipitate the poly(vinyl formal). Poly(vinyl formais) have also been used as fibers.
Properties of POLY(VINYL FORMAL)
| Melting point: | 85-120 °C |
| Density | 1.23 g/mL at 25 °C (lit.) |
| refractive index | n |
| solubility | Soluble in acetone, chloroform, dioxane, THF |
| form | powder |
| Specific Gravity | 1.23 |
| EPA Substance Registry System | Ethene, 1,1'-[methylenebis(oxy)]bis-, homopolymer (9003-33-2) |
Safety information for POLY(VINYL FORMAL)
Computed Descriptors for POLY(VINYL FORMAL)
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