$30.00 – $300.00
+ Free ShippingThe basic procedure in the bleached process consists in dissolving in aqueous sodium carbonate solution at 90-100 degree celcius, stirring off the solution with sodium hydrochloride and the start filtering after cooling down the temperature of solution. The bleached shellac is reclaimed from the filtered solution with sulphuric acid. The precipitated bleached shellac is ten filtered and washed from water for removal of acid and dried.
Specification of Dewaxed Bleached Shellac
| Acid Value | 65-90 |
| Ester Value | 135-195 |
| Saponification Value | 200-260 |
| Melting Point (Capillary Method) | 75ºC-91ºC |
| Wax Content: | 0.20% max. |
| Moisture: | 6% max. |
| Insolubility in Hot Alcohol | 0.10% max. |
| Rosin Content | Nil |
| Ash Content | 0.50% max. |
| Heavy Metals | 10 PPM |
| Colour | Pale Yellow |
| Arsenic | Nil |
| Iron | Nil |
| Weight | N/A |
|---|---|
| Quantity | 1Kg, 5Kg, 10Kg |
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