ChemicalBook
Chinese english Germany Japanese Korea

Alginsure Produkt Beschreibung

Alginic acid Struktur
9005-32-7
CAS-Nr.
9005-32-7
Bezeichnung:
Alginsure
Englisch Name:
Alginic acid
Synonyma:
Sazio;sazzio;Nopgine;kelacid;norgine;landalgine;Alginic aci;ALGINIC ACID;ALGINICACID,NF;ALGINICACID,FCC
CBNumber:
CB2145055
Summenformel:
(C6H8O6)n
Molgewicht:
0
MOL-Datei:
Mol file

Alginsure Eigenschaften

Schmelzpunkt:
300 °C
Löslichkeit
H2O: insoluble, but swells
Aggregatzustand
Powder
Farbe
White to pale yellow to beige
Wasserlöslichkeit
Insoluble in water.
Sensitive 
Hygroscopic
Merck 
14,242
CAS Datenbank
9005-32-7
EPA chemische Informationen
Alginic acid (9005-32-7)

Sicherheit

Kennzeichnung gefährlicher Xi
R-Sätze: 36/37/38
S-Sätze: 24/25-36-26
WGK Germany  2
RTECS-Nr. AZ5775000
3
TSCA  Yes
HS Code  39131000
Giftige Stoffe Daten 9005-32-7(Hazardous Substances Data)

Alginsure Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.

S-Sätze Betriebsanweisung:

S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.

Chemische Eigenschaften

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

Chemische Eigenschaften

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.

Verwenden

corrosive moisture sensitive

Verwenden

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

Verwenden

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.

Verwenden

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.

Definition

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.

Definition

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.

Vorbereitung Methode

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.

Pharmazeutische Anwendungen

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.

Sicherheitsprofil

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

Sicherheit(Safety)

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

Lager

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.

läuterung methode

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.]

Inkompatibilitäten

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.

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.

Alginsure Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Alginsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 234)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 22607 55
Hefei TNJ Chemical Industry Co.,Ltd.
+86-0551-65418679
86-0551-65418697 info@tnjchem.com China 3000 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 29954 58
hdzhl biotechnology co., ltd
86-13032617415
sales@luchibiology.com CHINA 1275 58
Chongqing Chemdad Co.,Ltd
+86-19923101450
sales@chemdad.com CHINA 4000 58
Xiamen AmoyChem Co., Ltd
+86 592-605 1114
sales@amoychem.com CHINA 6369 58
Hubei xin bonus chemical co. LTD
86-13657291602
027-59338440 linda@hubeijusheng.com CHINA 23035 58
Shandong chuangyingchemical Co., Ltd.
18853181302
sale@chuangyingchem.com CHINA 5917 58
BOC Sciences
1-631-485-4226
1-631-614-7828 inquiry@bocsci.com United States 19752 58
Chongqing Chemdad Co., Ltd
+86-13650506873
sales@chemdad.com CHINA 37282 58

9005-32-7(Alginsure)Verwandte Suche:


  • 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
  • 9005-32-7
  • C6H8O6nH2O
  • C12H16O12n
  • C14H22O13
  • Polysaccharide
  • Metabolomics
  • Metabolites and Cofactors on the Metabolic Pathways Chart
  • Metabolic Pathways
  • Biochemicals and Reagents
  • BioChemical
  • Carbohydrates
  • Carbohydrate
  • VX:15689727968
Copyright 2019 © ChemicalBook. All rights reserved