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ラック樹脂

ラック樹脂 化学構造式
9000-59-3
  • CAS番号.9000-59-3
  • 化学名:ラック樹脂
  • 别名:シェラック;ラック樹脂;セラック;セラックガム, 精製品
  • 英語化学名:Shellac
  • 英語别名:Lacca;Shellac;Gum lac;Molumba;Opaglos;seedlac;SHELLACS;Sllellac;C60H90O5;Schellack
  • CBNumber:CB1314474
  • Molecular Formula:
  • Formula Weight:0
  • MOL File:Mol file
ラック樹脂 物理性質
  • 融点  :115-120°
  • 比重(密度)  :1.035-1.140
  • 貯蔵温度  :2-8°C
  • 溶解性 :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.
  • 安定性: :Stable. Incompatible with strong oxidizing agents.
  • CAS データベース :9000-59-3
  • EPAの化学物質情報 :Shellac (9000-59-3)
安全性情報
  • WGK Germany  :3
  • HSコード  :1301900190
ラック樹脂 価格 もっと(3)
  • メーカー: 富士フイルム和光純薬株式会社(wako)
  • 製品番号: W01SPES1024
  • 製品説明 : セラックガム, 精製品
  • 純度: Shellac Gum, Refined
  • 包装: 500g
  • 価格: ¥32400
  • 更新時間: 2021/03/23
  • 購入: 購入
  • メーカー: Sigma-Aldrich Japan
  • 製品番号: 1600314
  • 製品説明 : 
  • 純度: Regular Bleached ShellacUnited States Pharmacopeia (USP) Reference Standard
  • 包装: 100mg
  • 価格: ¥71900
  • 更新時間: 2021/03/23
  • 購入: 購入
  • メーカー: Sigma-Aldrich Japan
  • 製品番号: 1600303
  • 製品説明 : 
  • 純度: Refined Bleached ShellacUnited States Pharmacopeia (USP) Reference Standard
  • 包装: 1g
  • 価格: ¥74100
  • 更新時間: 2021/03/23
  • 購入: 購入

ラック樹脂 MSDS


Shellac

Shellac 化学特性,用途語,生産方法

  • 定義 本品は、ラックカイガラムシ Laccifer lacca の分泌物である。
  • 解説 ラック貝殻虫Coccus laccaが分泌する樹脂状の物質.電気絶縁材料,ワニス製造原料として用いる.
    森北出版「化学辞典(第2版)
  • 化粧品の成分用途 ヘアスタイリング剤、結合剤、皮膜形成剤
  • 化学的特性 solid
  • 化学的特性 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.
  • 使用 Chiefly in lacquers and varnishes; also in manufacture of buttons, grinding wheels, sealing wax, cements, inks, phonograph records, paper; for stiffening hats; in electrical machines; coating confections and medicinal tablets; finishing leather.
  • 調製方法 Shellac or lac is cultivated and refined from lacca, a resinous secretion produced by the tiny insect Kerria lacca (Kerr) Lindinger (Coccideae), formerly Laccifer lacca (Kerr). The insects are parasitic on certain trees, mainly in India. In Thailand and South China, the resin is secreted by another species, Laccifer chinensis (Madihassan) on different trees. The insects pierce through the bark of the tree and transform the sap into a natural polyester resin, called stick lac,which is secreted through the surface of their body. The resin forms thick encrustations on the smaller branches and twigs, which are then scraped off the twigs and further processed to produce seed lac, as it is known at this stage. Seed lac is then refined to become shellac.
    The chemical composition, properties and the color of shellac depend on the insect or insect strain, and thus the host tree, as well as the process used for refining. Three very different processes are used for refining the seed lac to shellac (bleaching, melting, and solvent extraction), resulting in products with different characteristics and properties.
    Bleaching process Refined bleached or white shellac is obtained by dissolving seed lac in an aqueous alkaline solution, which is then filtered, dewaxed, and bleached with sodium hypochlorite to completely remove the color. However, changes in the molecular structure and the addition of chlorine substituents may lead to self-crosslinking and polymerization. Melting process After melting the seed lac, the highly viscous molten lac is pressed through a filter and drawn to a thin film. Once cooled, the film breaks into thin flakes. The shellac wax is not removed by this process and the color depends on the type of seed lac used.
    Solvent extraction process Solvent extraction is a very gentle process for refining shellac. The seed lac is dissolved in ethanol, and wax and impurities are removed by filtration. Activated carbon is used to produce light-colored grades. After a further filtration step and the removal of ethanol, the resin is drawn to a thin film, which breaks into flakes after cooling. The properties of the final product depend on the type of seed lac used and are influenced by the processing parameters and the grade of activated carbon.
    PhEur 6.2 and USP32–NF27 define four types of shellac depending on the refining method, and the JP XV mentions two types.
    The use of the term ‘pharmaceutical grade’ as well as the quality of the shellac depends on the manufacturer. Seed lac is mainly produced in India, Thailand and China. Orange shellac, refined by the melting process, is manufactured by several companies in India, Thailand and South-East Asia. Bleached shellac is produced in the USA, Canada, Japan, India, Thailand and South China. Dewaxed orange shellac is refined by the solvent extraction process in Germany, Japan and India.
  • 定義 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.
  • 危険性 (Alcohol solution) Flammable, dangerous fire risk.
  • 応用例(製薬) 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.
  • 安全性 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.
  • 貯蔵 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.
  • 不和合性 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.
  • 規制状況(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.
ラック樹脂 上流と下流の製品情報
原材料
準備製品
ラック樹脂 生産企業
Global(116)Suppliers
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  • 電話番号:+86-371-66670886
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  • 名前:Baoji Guokang Healthchem co.,ltd
  • 電話番号:09178656283
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  • 国籍:CHINA
  • 製品カタログ:9476
  • 優位度:58
9000-59-3, ラック樹脂 キーワード:
  • 9000-59-3
  • Shellac Flake
  • (5ξ,10β)-10,14-Dihydroxycedr-8-ene-12,15-dioic acid - 9,10,15-trihydroxypentadecanoic acid (1:1)
  • SHELLAC GUM, ORANGE
  • SHELLAC ORANGE
  • Shellac
  • SHELLAC WAX-FREE, PH EUR
  • SHELLAC ORANGE BEST QUALITY
  • Schellack
  • Shellac:dewaxedbleachedshellacpowder
  • Waxshellac
  • WaxvonSchellack
  • Shellac:dewaxedgarnetshellac
  • Shellac:dewaxeddecolorisedshellac
  • Shellac:dewaxedorangeshellac
  • Shellac:waxyshellac
  • Citrus gleam
  • Gum lac
  • Molumba
  • Opaglos
  • Resins, lac or shellac
  • SHELLACS
  • Shellac, Bleached
  • Hodgsons Shellac
  • Lacca
  • Sllellac
  • seedlac
  • Shellac wax-free,Lacca
  • Shellag。Bleached
  • C60H90O5
  • Shellac USP/EP/BP
  • シェラック
  • ラック樹脂
  • セラック
  • セラックガム, 精製品