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アルギン酸

アルギン酸 化学構造式
9005-32-7
CAS番号.
9005-32-7
化学名:
アルギン酸
别名:
アルギン酸;アルギン酸, 膨潤性;アルギン酸, 非膨潤性;アルギン酸 FROM BROWN ALGAE
英語化学名:
Alginic acid
英語别名:
Sazio;sazzio;Nopgine;kelacid;norgine;landalgine;Alginic aci;ALGINIC ACID;ALGINICACID,NF;ALGINICACID,FCC
CBNumber:
CB2145055
化学式:
(C6H8O6)n
分子量:
0
MOL File:
Mol file

アルギン酸 物理性質

融点 :
300 °C
溶解性:
H2O: insoluble, but swells
外見 :
Powder
色:
White to pale yellow to beige
水溶解度 :
Insoluble in water.
Sensitive :
Hygroscopic
Merck :
14,242
CAS データベース:
9005-32-7
EPAの化学物質情報:
Alginic acid (9005-32-7)

安全性情報

主な危険性  Xi
Rフレーズ  36/37/38
Sフレーズ  24/25-36-26
WGK Germany  2
RTECS 番号 AZ5775000
3
TSCA  Yes
HSコード  39131000
有毒物質データの 9005-32-7(Hazardous Substances Data)
化審法 (8)-236 届出不要化学物質

アルギン酸 価格 もっと(15)

メーカー 製品番号 製品説明 CAS番号 包装 価格 更新時間 購入
富士フイルム和光純薬株式会社(wako) W01AFAA17582 アルギン酸
Alginic acid
9005-32-7 100g ¥8890 2021-03-23 購入
富士フイルム和光純薬株式会社(wako) W01AFAA17582 アルギン酸
Alginic acid
9005-32-7 500g ¥28160 2021-03-23 購入
東京化成工業 A0733 アルギン酸
Alginic Acid
9005-32-7 25g ¥1700 2021-03-23 購入
東京化成工業 A0733 アルギン酸
Alginic Acid
9005-32-7 500g ¥6300 2021-03-23 購入
関東化学株式会社(KANTO) 27058-1A アルギン酸
Alginic acid
9005-32-7 100g ¥6700 2021-03-23 購入

アルギン酸 化学特性,用途語,生産方法

外観

白色~うすい黄褐色, 粉末

定義

本品は、種々の褐藻(Paeophyceae)からアルカリ抽出により得られる炭水化物である。

溶解性

水に不溶。水酸化アルカリ溶液にやや可溶。

化粧品の成分用途

結合剤、皮膚コンディショニング剤、親水性増粘剤

効能

乳化剤, 賦形剤

化学的特性

Alginic acid is a tasteless, practically odorless, white to yellowishwhite, fibrous powder.

化学的特性

Alginic acid found in the walls of brown seaweeds (Phaeophyceae) consists of D-mannuronic acid  units and L-guluronic acid units probably linked β (1->4). The chains contain three distinct regions; in one, the D-mannuronic acid units alternate with L-guluronic acid units, whereas the remaining regions are homogeneous and contain either D-mannuronic acid or L-guluronic acid. The lengths and proportions of the three regions vary with the seaweed species and are responsible for the differences in chemical and physical properties of the various alginates.
Alginic acid is biosynthesised from GDP-D-mannuronic acid and GDP-guluronic acid. It seems probable that guluronic acid is derived from its isomer, mannuronic acid, the re action being catalysed by an epimerase.
D-mannuronic acid or L-guluronic acid
Monovalent salts of alginic acid are soluble in water, but polyvalent salts are either insoluble or form gels. Solutions of alginates are very viscous due to the high molecular weight and random-coil formation of the polymers. The jellying and thickening properties of alginates are widely used commercially in foodstuffs, etc.

使用

Gum derived from alginic acid which is obtained from brown seaweed genera, such as Macrocystis pyrifera. The derivatives are sodium, ammonium, and potassium ates of which the sodium salt is most common. They are used to provide thickening, gelling, and binding. A derivative designed for improved acid and calcium stability is propylene glycol ate. The s are soluble in cold water and form nonthermoreversible gels in reaction with calcium ions and under acidic conditions. Algin is used in ice cream, icings, puddings, dessert gels, and fabricated fruit.

使用

corrosive moisture sensitive

使用

algin (alginic acid) is used in cosmetic formulations as a thickener, stabilizer, and gelling agent. It is obtained from different varieties of brown seaweed.

使用

Alginic Acid is the acidic, insoluble form of algin that is a white to yellowish fibrous powder obtained from brown seaweed genera, such as macrocystis pyrifera. the derivatives are soluble and include sodium, potassium, and ammonium alginate and propylene glycol alginate. it is used as a tablet disintegrant and as an antacid ingredient.

定義

A polysaccharide composed of β,d-mannuronic acid residues linked so that the carboxyl group of each unit is free, while the aldehyde group is shielded by a glycosidic linkage. It is a linear polymer of the mannuronic acid in the pyranose ring form.

調製方法

Alginic acid is a hydrophilic colloid carbohydrate that occurs naturally in the cell walls and intercellular spaces of various species of brown seaweed (Phaeophyceae). The seaweed occurs widely throughout the world and is harvested, crushed, and treated with dilute alkali to extract the alginic acid.

定義

A yellow-white organic solid that is found in brown algae. It is a complex polysaccharide and produces, in even very dilute solutions, a viscous liquid. Alginic acid has various uses, especially in the food industry as a stabilizer and texture agent.

応用例(製薬)

Alginic acid is used in a variety of oral and topical pharmaceutical formulations. In tablet and capsule formulations, alginic acid is used as both a binder and disintegrating agent at concentrations of 1–5% w/w. Alginic acid is widely used as a thickening and suspending agent in a variety of pastes, creams, and gels; and as a stabilizing agent for oil-in-water emulsions.
Alginic acid has been used to improve the stability of levosimendan.
Therapeutically, alginic acid has been used as an antacid.In combination with an H2-receptor antagonist, it has also been utilized for the management of gastroesophageal reflux.

安全性プロファイル

Moderately toxic by intraperitoneal route. When heated to decomposition it emits acrid smoke and irritating fumes

安全性

Alginic acid is widely used in food products and topical and oral pharmaceutical formulations. It is generally regarded as a nontoxic and nonirritant material, although excessive oral consumption may be harmful. Inhalation of alginate dust may be an irritant and has been associated with industrially related asthma in workers involved in alginate production. However, it appears that the cases of asthma were linked to exposure to unprocessed seaweed dust rather than pure alginate dust. An acceptable daily intake of alginic acid and its ammonium, calcium, potassium, and sodium salts was not set by the WHO because the quantities used, and the background levels in food, did not represent a hazard to health.
LD50 (rat, IP): 1.6 g/kg

貯蔵

Alginic acid hydrolyzes slowly at warm temperatures producing a material with a lower molecular weight and lower dispersion viscosity.
Alginic acid dispersions are susceptible to microbial spoilage on storage, which may result in some depolymerization and hence a decrease in viscosity. Dispersions should therefore be preserved with an antimicrobial preservative such as benzoic acid; potassium sorbate; sodium benzoate; sorbic acid; or paraben. Concentrations of 0.1–0.2% are usually used.
Alginic acid dispersions may be sterilized by autoclaving or filtration through a 0.22 μm filter. Autoclaving may result in a decrease in viscosity which can vary depending upon the nature of any other substances present.
Alginic acid should be stored in a well-closed container in a cool, dry place.

純化方法

To 5g of acid in 550mL water containing 2.8g KHCO3 are added 0.3mL of acetic acid and 5g potassium acetate. EtOH is added to make the solution to 25% (v/v) in EtOH, and any insoluble material is discarded. Further addition of EtOH, to 37% (v/v), precipitated alginic acid. Collect the acid and dry it in vacuo. [Pal & Schubert J Am Chem Soc 84 4384 1962.]

不和合性

Incompatible with strong oxidizing agents; alginic acid forms insoluble salts in the presence of alkaline earth metals and group III metals with the exception of magnesium.

規制状況(Regulatory Status)

GRAS listed. Accepted in Europe for use as a food additive. Included in the FDA Inactive Ingredients Database (ophthalmic preparations, oral capsules, and tablets). Included in the Canadian List of Acceptable Non-medicinal Ingredients. Included in nonparenteral medicines licensed in the UK.

アルギン酸 上流と下流の製品情報

原材料

準備製品


アルギン酸 生産企業

Global( 225)Suppliers
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Henan Tianfu Chemical Co.,Ltd.
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BOC Sciences
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1-631-614-7828 inquiry@bocsci.com United States 19753 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 37282 58

9005-32-7(アルギン酸)キーワード:


  • 9005-32-7
  • ALGINIC ACID
  • kelacid
  • landalgine
  • norgine
  • polymannuronicacid
  • sazzio
  • Alginic acid ammonium
  • Alginic acid from brown algae, AR
  • Mixed polymer of mannuronic and guluronic acid
  • Nopgine
  • ALGINIC ACID FREE ACID FROM MACROCYSTIS PYRIFERA (K
  • ALGINIC ACID, FROM BROWN ALGAE
  • AlginicAcid,SodiumSalt,~99%
  • alginic acid from macrocystis pyrifera (kelp)
  • ALGINICACID,FCC
  • ALGINICACID,NF
  • ALGINICACIDANDITSCOMMONSALTS
  • ALGINICACID,SALTS
  • Alginic acid from Macrocystis pyrifera (kelp), Mixed polymer of mannuronic and guluronic acid
  • Sazio
  • Alginic acid 100GR
  • Alginic aci
  • Alginic Acid Alginic acid from Macrocystis pyrifera (kelp) Mixed polymer of mannuronic and guluronic acid
  • アルギン酸
  • アルギン酸, 膨潤性
  • アルギン酸, 非膨潤性
  • アルギン酸 FROM BROWN ALGAE
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