Shellac refined bleached

Bleached shellac CertiSeal dewaxed orange shellac E904 lac Mantrolac R-49-, orange shellac refined bleached shellac regular bleached shellac Swanlac. 

The PhEur 2005 defines four types of shellac depending on the nature of the treatment of the crude shellac (seed lac) wax-containing shellac bleached shellac dewaxed shellac and bleached dewaxed shellac. The USPNF 23 similarly defines four types of shellac orange shellac dewaxed orange shellac regular bleached (white) shellac and refined bleached shellac. The JP 2001 defines two types purified shellac and white shellac (bleached). 

Bleached or white shellac is obtained by dissolving shellac in aqueous sodium carbonate, bleaching the solution with sodium hypochlorite, and precipitating the bleached shellac with 2 N sulfuric acid. Removal of wax by filtration results in a refined bleached shellac. 

Synonyms white shellac regular bleached shellac wax-free shellac refined bleach shellac lac ... 

Raw lac is first treated to remove water-soluble carbohydrates and the dye that gives lac its red color. Also removed are woody materials, insect bodies, and trash. It is further refined by either hot filtration or a solvent process. In the heat process, the dried, refined lac is filtered molten through cloth or wine screens to produce the standard grades of orange shellac. In the solvent process, lac is dissolved and refluxed in alcohol solvents, filtered to remove dirt and impurities, and concentrated by evaporation. The lac can be further decolori2ed in this process to produce very pale grades. Bleached shellac is prepared by treatment with dilute sodium hypochlorite and coalesced into slabs. 

CAS 97766-50-2 EINECS/ELINCS 307-913-6 Synonyms Lac resin wax Shellac cera Waxes and waxy substances, shellac Definition Waxy fraction of bleached shellac obtained by physical means Uses Emollient, film-former in cosmetics, pharmaceuticals wax coating on produce Regulatory FDA 21CFR 101.4 Trade Name Synonyms Cire de Gomme Laque ES [Baerlocher France] Cire de Gomme Laque N262 [Baerlocher France] Ross Bleached Refined Shellac Wax [Frank B. Ross] Ross Bleached Refined Shellac Wax Cosmetic Grade [Frank B. Ross]... 

Various different grades of modified or refined shellac are available, which may be broadly defined as either bleached or orange shellac. Orange shellac is essentially the crude shellac obtained from seed lac, as described above. It may retain most of its wax or be dewaxed, and may contain less of the natural color than was originally present. The quantities of wax, coloring material, and other impurities present may vary the... 

Lac incmstations deposited by the insects on trees are separated from the twigs by scraping. Lac, thus gathered is known as stick lac. It contains lac resin together with woody materials, sand, dust and other water-soluble impurities. This is subjected to various refining processes. The various refined forms of sticklac are seedlac, shellac, buttonlac, garnet lac, bleached lac, and decolorized lac. 

Ross Beeswax Synthetic Cosmetic Grade, Ross Beeswax Synthetic. See Beeswax, synthetic Ross Beeswax. See Beeswax Ross Bieached Montan Wax Cosmetic, Ross Bieached Montan Wax. See Montan wax Ross Bieached Refined Sheiiac Wax Cosmetic Grade, Ross Bleached Refined Shellac Wax. See Shellac wax... 

Cire de Gomme Laque ES Cire de Gomme Laque N262 Ross Bleached Refined Shellac Wax Ross Bleached Refined Shellac Wax Cosmetic Grade Shellac wax 97808-04-3 Amine 780... 

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