Bernsteinsureanhydrid

Gefahreninformationscode (GHS)

• Bildanzeige (GHS)

  

• Alarmwort

  Warnung

• Gefahrenhinweise

  H290：Kann gegenüber Metallen korrosiv sein.

• Sicherheit

  P234：Nur im Originalbehälter aufbewahren.

  P390：Verschüttete Mengen aufnehmen, um Materialschäden zu vermeiden.

Succinic anhydride Chemische Eigenschaften,Einsatz,Produktion Methoden

• ERSCHEINUNGSBILD

  FARBLOSE KRISTALLE ODER FLOCKEN

• CHEMISCHE GEFAHREN

  Zersetzung beim Erhitzen unter Bildung reizender Rauche.

• ARBEITSPLATZGRENZWERTE

  TLV nicht festgelegt (ACGIH 2005).
  MAK nicht festgelegt (DFG 2006).
  

• AUFNAHMEWEGE

  Aufnahme in den Körper durch Inhalation und durch Verschlucken.

• INHALATIONSGEFAHREN

  Eine schädliche Partikelkonzentration in der Luft kann schnell erreicht werden.

• WIRKUNGEN BEI KURZZEITEXPOSITION

  WIRKUNGEN BEI KURZZEITEXPOSITION:
  Der Stoff ist stark reizend auf die Augen und reizend auf die Atemwege.

• LECKAGE

  Persönliche Schutzausrüstung: Atemschutzgerät, P1-Filter für inerte Partikel. Verschüttetes Material in abgedeckten Behältern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern.

• R-Sätze Betriebsanweisung:

  R36/37:Reizt die Augen und die Atmungsorgane.
  R22:Gesundheitsschädlich beim Verschlucken.

• S-Sätze Betriebsanweisung:

  S25:Berührung mit den Augen vermeiden.

• Beschreibung

  Succinic anhydride, also called di hydro - 2,5- furandione , is an organic compound with the molecular formula C₄H₄O₃.This colorless solid is the acid anhydride of succinic acid.

• Chemische Eigenschaften

  fine white crystalline solid

• Chemische Eigenschaften

  Succinic anhydride is an odourless, colourless needle-like or white crystalline solid natural product. Molecular formula C4H4O3, molecular weight 100.07 g/mol, relative density 1.503, melting point 237 °F. 239 °F at 5 mmHg, 239 °F at 198 °F and 1 mmHg. Soluble in chloroform, carbon tetrachloride, and ethanol; very slightly soluble in ether and water (insoluble in water). Moderately toxic and irritating, emits pungent and irritating fumes when heated to decomposition.

• Verwenden

  Succinic Anhydride is an acidulant that hydrolyzes very slowly to succinic acid in water. it has thermal stability and a low melting point of 118°c which permits it to be used in products at compara- tively low temperatures. it is used as a leavening acidulant for bak- ing powder.

• Verwenden

  It was used in the preparation of covalently cross-linked oxidized-alginate/N-succinyl-chitosan hydrogels, as injectable systems towards tissue engineering.It was also used in preparing functionalized oxide surfaces on a chip.

• Verwenden

  Succinic Anhydride is a useful compound in the paper manufacturing process.

• synthetische

  A solution of succinic acid (500 mg, 42 mmol) and triethylamine (1.23 mL, 42 mmol) in anhydrous THF (120 mL) was allowed to react with triphosgene (42 mg, 7.0 mmol) at ice-water temperature for 10 min. The reaction mixture was subsequently stirred for a further 15 min at room temperature. The solution was then filtered, and the filtrate was concentrated to dryness. The residue was crystallized from ethyl acetate to afford the desired product as white crystals (370 mg, 85%).

• Vorbereitung Methode

  The compound is produced from succinic anhydride and hydrogen peroxide . This material must be stabilized by using a dehydrating agent such as disodium sulfate or magnesium sulfate.

• Application

  Alkyl succinic anhydride (ASA) is used as a sizing agent or wet strength additive in paper production.

• Definition

  ChEBI: Succinic anhydride is a cyclic dicarboxylic anhydride and a tetrahydrofurandione. It is functionally related to a succinic acid.

• Synthesis Reference(s)

  Synthetic Communications, 23, p. 419, 1993 DOI: 10.1080/00397919308009796

• Allgemeine Beschreibung

  Succinic anhydride is a cyclic anhydride of succinic acid with a five-membered ring. It is widely used in the manufacture of polymeric materials, pharmaceuticals, agrochemicals, dyes, surface-active agents, and organic flame-retardant materials. It also finds application as a cross-linking agent in ion-exchange membranes and a curing agent for epoxy resins.

• Allgemeine Beschreibung

  Colorless needles or white crystalline solid. Melting point 237°F. Sublimes at 239°F at 5 mm Hg pressure; and at 198°F and 1 mm Hg pressure. Moderately toxic and an irritant.

• Air & Water Reaktionen

  Reacts slowly with water. Insoluble in water.

• Reaktivität anzeigen

  Succinic anhydride reacts exothermically with water. Reactions are usually slow, but might become violent if local heating accelerates their rate. Acids accelerate the reaction with water. Incompatible with acids, strong oxidizing agents, alcohols, amines, and bases.

• Brandgefahr

  Flash point data for Succinic anhydride are not available, however, Succinic anhydride is probably combustible.

• Flammability and Explosibility

  Not classified

• Materials Uses

  Succinic anhydride can be used:
  (1) In the preparation of covalently cross-linked oxidized-alginate/N-succinyl-chitosan hydrogels, as injectable systems towards tissue engineering.
  (2) In preparing functionalized oxide surfaces on a chip.
  (3) As a starting material to synthesize polyesters in presence of a metal triflate as a catalyst.
  (4) As a cross-linking agent to enhance the mechanicalproperties and antimicrobial activities of zein films.

• Sicherheitsprofil

  Experimental teratogenic effects. Moderately toxic by ingestion. A severe eye irritant. Mutation data reported. Questionable carcinogen with experimental neoplastigenic data. When heated to decomposition it emits acrid smoke and irritating fumes. See also ANHYDRIDES.

• läuterung methode

  Crystallise the anhydride from redistilled acetic anhydride or CHCl3, then filter, wash with diethyl ether and dry it in a vacuum. [Beilstein 17 H 606, 17 V 6.]

Succinic anhydride Upstream-Materialien And Downstream Produkte

Bernsteinsureanhydrid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

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