셸락

한글명:셸락

카스 번호9000-59-3

상품명:Shellac

CBNumberCB1314474

분자식unspecified

포뮬러 무게0

MOL 파일Mol file

동의어(한글)

셸락

시케락

표백제ED쉘AC

화학적 성질

녹는점	115-120°
밀도	1.035-1.140
저장 조건	2-8°C
용해도	Practically insoluble in water, gives a more or less opalescent solution (wax containing shellac and bleached shellac) or a clear solution (dewaxed shellac and bleached, dewaxed shellac) in anhydrous ethanol. When warmed it is sparingly soluble or soluble in alkaline solutions.
냄새	온화한 우디
Dielectric constant	2.0（Ambient）
안정성	안정적인. 강한 산화제와 호환되지 않습니다.
CAS 데이터베이스	9000-59-3
EPA	Shellac (9000-59-3)

위험 및 안전 성명

WGK 독일	3
HS 번호	1301900190

그림문자(GHS)

셸락 MSDS

셸락 화학적 특성, 용도, 생산

순도시험

(1) 비소 : 이 품목을 비소시험법에 따라 시험할 때, 그 양은 2.0ppm 이하이어야 한다.
  (2) 납 : 이 품목 5.0g을 취하여 원자흡광광도법 또는 유도결합플라즈마발광광도법에 따라 시험할 때, 그 양은 2.0ppm 이하이어야 한다.
  (3) 로진 : 이 품목 2g을 취하여 무수알콜 10mL에 녹이고 헥산 50mL를 흔들어 주며 천천히 가한다. 이를 분액깔대기에 옮기고 물 50mL씩으로 2회 세척후 세척수는 버린다. 상층액을 취하여 여과한 다음 여액을 수욕상에서 증발건고시켜 얻은 잔류물에 무수초산 5mL를 가하고 필요하면 수욕상에서 가온하여 녹인다. 이 액 20mL를 비색병에 넣고 황산 1방울을 가할 때 적자색에서 자색을 거쳐 황토색이 나타나서는 아니된다.
  (4) 왁스 : 이 품목 10g을 비이커에 취한 다음 더운 물 150mL와 탄산나트륨 2.5g을 가하여 검체를 완전히 녹인다. 이어 3시간 가열한 후 찬물로 식힌다. 이 때 왁스가 표면에 뜨면 여과지로 여과한 후 물로 씻고 에탄올 5～10mL로 씻어 건조가 빨리되게 한다. 그 후 여지를 느슨하게 접어 윗부분을 가는 철사로 묶어 약한 열풍으로 건조시키고 클로로포름을 추출용매로 하여 지방추출속슬레장치를 사용하여 2시간 추출하고 수기의 용매를 날려 보내고 105℃에서 2시간 건조하여 추출물의 양을 구할 때, 그 양은 백쉘락은 5.5% 이하, 정제쉘락은 0.2% 이하이어야 한다.
  (5) 산가 : 이 품목을 건조한 다음 미세한 분말 약 2g을 정밀히 달아 중화알콜 50mL를 가해 녹인 액을 시험용액으로 하여 유지류시험법 중 산가에 따라 시험하였을 때, 그 값은 백쉘락은 73～89, 정제쉘락은 75～91이어야 한다.
확인시험

이 품목 50mg에 몰리브덴산암모늄 1g을 황산 3mL에 녹인 액을 몇 방울 가하면 액은 녹색을 나타내고 이를 암모니아시액으로 중화하면 연보라색을 나타낸다.
정의

이 품목은 개각충(介殼蟲) Laccifer(Tachardia), Lacca Kerr(Coccidae)의 수지성 분비물인 Lac을 탄산나트륨용액에 녹이고 차아염소산나트륨으로 표백한 후 묽은황산으로 침전시켜 건조한 것을 백쉘락(White Shellac, Bleached Shellac, Regular Bleached Shellac)이라 칭하며, 여과하여 왁스를 제거한 것을 정제백쉘락(Refined Bleached Shellac, Wax-Free Bleached Shellac)이라 칭한다.
화학적 성질
Shellac is a natural resin that may be obtained in a variety of colors ranging from light yellow to dark red in the form of hard, brittle flakes with or without wax, depending on the refining process; see Sections 4 and 13. The different types of shellac include bleached shellac, bleached dewaxed shellac, dewaxed and decolorized shellac, dewaxed flake shellac, dewaxed orange shellac, dewaxed shellac, orange shellac, purified shellac, refined bleached shellac, regular bleached shellac, regular waxy shellac, wax-containing shellac, and white shellac. The flakes may be crushed or milled to a coarse or fine powder. Bleached shellac is supplied as a coarse offwhite powder. Shellac is tasteless and may have a faint odor. The typical odor of shellac is the result of a complex fragrance system.
용도
Shellac is used in the preparation of cosmetic products such as mascara and acrylic nail products. It is also used in the formulation of aqueous-core capsules for riboflavin release.
정의
shellac: A hard resin produced as asecretion by a plant parasite, thesouth-east Asian lac insect Laciferlacca. It is used in sealing wax, varnish(French polish), and electrical insulators.
위험도
(Alcohol solution) Flammable, dangerous fire risk.
Pharmaceutical Applications
Shellac is widely used as a moisture barrier coating for tablets and pellets due to its low water vapor and oxygen permeability. It has usually been applied in the form of alcoholic or aqueous solutions (pharmaceutical glazes). However, due to stability problems with alcoholic shellac solutions, it has had limited use in the pharmaceutical industry for modified-release or enteric coatings.
Shellac, particularly novel aqueous shellac solutions, is mainly used in food products and nutritional supplements. Recent research results indicate good application properties and chemical stability of shellac films from aqueous shellac solutions. Aqueous ammonium shellac solutions, based on dewaxed orange shellac, do not show the problems exhibited by alcoholic shellac solutions and are used as an enteric coating for pellets, tablets, soft and hard gelatine capsules, primarily in nutritional supplements.
Shellac is a primary ingredient of pharmaceutical printing inks for capsules and tablets, and can be applied as a 40% w/v alcoholic solution. It has also been used to apply one or two sealing coats to tablet cores to protect them from moisture before being film- or sugar-coated.
Other applications of shellac are the coating or encapsulation of powders or granules, e.g. in probiotics. Prior to the introduction of film coating, a combination of shellac, cetostearyl alcohol and stearic acid was used as an enteric coating. In cosmetics, shellac is used in hairsprays, mascara and lipstick formulations. Aqueous shellac solutions are also used for colonic drug delivery.
Safety
Shellac is used in oral pharmaceutical formulations, food products, and cosmetics. It is generally regarded as an essentially nonirritant and nontoxic material at the levels employed as an excipient.
저장
After long periods of storage, shellac becomes less readily soluble in alcohol, less fluid on heating, and darker in color.
Shellac should be stored in a well-closed container at temperatures below 15°C. Wax-containing grades should be mixed before use to ensure uniform distribution of the wax. Orange and dewaxed orange shellac have a shelf-life of 1 to 2 years. The shelf-life of bleached shellac is approximately 6 months.
비 호환성
Shellac is chemically reactive with aqueous alkalis, organic bases, alcohols, and agents that esterify carboxyl groups. Therefore, shellac should be used with caution in the presence of such compounds.
Regulatory Status
Accepted as a food additive in the USA, Europe, and Japan. Included in the FDA Inactive Ingredients Database (oral capsules and tablets). Included in nonparenteral medicines (oral tablets and capsules, often in printing ink formulations) licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

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