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Asparaginsure

L-Aspartic acid  Struktur
56-84-8
CAS-Nr.
56-84-8
Bezeichnung:
Asparaginsure
Englisch Name:
L-Aspartic acid
Synonyma:
ASPARTIC ACID;ASP;ASPARTATE;L-ASP;H-ASP-OH;Aspartic;Asparaginic acid;(S)-2-AMINOSUCCINIC ACID;L-Asp-OH;L-ASPARGINE
CBNumber:
CB3141599
Summenformel:
C4H7NO4
Molgewicht:
133.1
MOL-Datei:
56-84-8.mol

Asparaginsure Eigenschaften

Schmelzpunkt:
>300 °C (dec.)(lit.)
alpha 
25 º (c=8, 6N HCl)
Siedepunkt:
245.59°C (rough estimate)
Dichte
1.66
Brechungsindex
1.4540 (estimate)
FEMA 
3656 | L-ASPARTIC ACID
storage temp. 
Store below +30°C.
L?slichkeit
H2O: 5 mg/mL
Aggregatzustand
powder
pka
1.99(at 25℃)
Farbe
White
PH
2.5-3.5 (4g/l, H2O, 20℃)
Geruch (Odor)
acid taste
Optische Aktivit?t
[α]20/D +24.7±1°, c = 5% in 5 M HCl
Geruchsart
odorless
Wasserl?slichkeit
5 g/L (25 ºC)
maximale Wellenl?nge (λmax)
λ: 260 nm Amax: 0.20
λ: 280 nm Amax: 0.10
JECFA Number
1429
Merck 
14,840
BRN 
1723530
Stabilit?t:
Stable. Combustible. Incompatible with strong oxidising agents.
InChIKey
CKLJMWTZIZZHCS-REOHCLBHSA-N
LogP
-0.67
CAS Datenbank
56-84-8(CAS DataBase Reference)
NIST chemische Informationen
Aspartic acid(56-84-8)
EPA chemische Informationen
Aspartic acid (56-84-8)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xi,Xn
R-S?tze: 36-36/37/38-20/21/22
S-S?tze: 26-24/25-22-36
WGK Germany  2
RTECS-Nr. CI9098500
10
TSCA  Yes
HazardClass  IRRITANT
HS Code  29224995
Giftige Stoffe Daten 56-84-8(Hazardous Substances Data)
Toxizit?t LD50 intraperitoneal in mouse: 6gm/kg
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitssch?dlich bei Verschlucken. Akute Toxizit?t oral Kategorie 4 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P270, P301+P312, P330, P501
Sicherheit
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P270 Bei Gebrauch nicht essen, trinken oder rauchen.
P301+P312 BEI VERSCHLUCKEN: Bei Unwohlsein GIFTINFORMATIONSZENTRUM/Arzt/... (geeignete Stelle für medizinische Notfallversorgung vom Hersteller/Lieferanten anzugeben) anrufen.
P501 Inhalt/Beh?lter ... (Entsorgungsvorschriften vom Hersteller anzugeben) zuführen.

Asparaginsure Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

FARBLOSE KRISTALLE.

PHYSIKALISCHE GEFAHREN

Staubexplosion der pulverisierten oder granulierten Substanz in Gemischen mit Luft m?glich. Die trockene Substanz kann durch Verwirbeln, Druckluft, Flie?en usw. elektrostatisch aufgeladen werden.

CHEMISCHE GEFAHREN

Zersetzung beim Verbrennen unter Bildung giftiger Gase mit Stickstoffoxiden. Reagiert sehr heftig mit Oxidationsmitteln.

ARBEITSPLATZGRENZWERTE

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

AUFNAHMEWEGE

Aufnahme in den K?rper durch Verschlucken.

INHALATIONSGEFAHREN

Verdampfen bei 20°C vernachl?ssigbar; eine bel?stigende Partikelkonzentration in der Luft kann jedoch beim Dispergieren schnell erreicht werden, besonders als Pulver.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Die Substanz reizt die Augen und die Atemwege.

LECKAGE

Verschüttetes Material in Beh?ltern sammeln; falls erforderlich durch Anfeuchten Staubentwicklung verhindern. Reste mit viel Wasser wegspülen. Pers?nliche Schutzausrüstung: Atemschutzger?t, P1-Filter für inerte Partikel.

R-S?tze Betriebsanweisung:

R36:Reizt die Augen.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.

S-S?tze Betriebsanweisung:

S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S22:Staub nicht einatmen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.

Beschreibung

L-Aspartic acid is the L-form of the aspartic acid. It is one of the 20 amino acids that used in the protein synthesis. It is the non-essential amino acids for humans as it can be synthesized in vivo. It is important in the synthesis of other amino acids and some nucleotides, and is a metabolite in the citric acid and urea cycles. In animals, it may be used as a neurotransmitter. It can be chemically synthesize from the diethyl sodium phthalimidomalonate. Currently, almost all the aspartic acids are manufactured in China. Its application include being used as low calorie sweetener (as the part of the aspartame), scale and corrosion inhibitor, and in resins. One of its growing applications is for the manufacturing of biodegradable superabsorbent polymer, polyaspartic acid. It can also be used in fertilizer industry to improve water retention and nitrogen uptake.

Physikalische Eigenschaften

Solubility 0.5 (25 ℃) g/100 g H2O, pI 2.98, dissociation constants: pK1 2.1, pK2 3.86 (β-COOH), pK3 9.82    

Chemische Eigenschaften

Colorless crystals. Soluble in water; insoluble in alcohol and ether. Optically active. dl-aspartic acid.

Occurrence

Dietary sources
Aspartic acid is not an essential amino acid, which means that it can be synthesized from central metabolic pathway intermediates in humans. Aspartic acid is found in :
Animal sources : luncheon meats, sausage meat, wild game
Vegetable sources: sprouting seeds, oat flakes, avocado,
asparagus , young sugarcane, and molasses from sugar beets.
Chemical synthesis
Racemic aspartic acid can be synthesized from diethyl sodium phthalimido malonate, (C6H4(CO)2NC(CO2Et)2).
The major disadvantage of the above technique is that equimolar amounts of each enantiomer are made. Using biotechnology it is now possible to use immobilized enzymes to create just one type of enantiomer owing to their stereo specificity. Aspartic acid is made synthetically using ammonium fumarate and aspartase from E.coli, E.coli usually breaks down the aspartic acid as a nitrogen source but using excess amounts of ammonium fumarate a reversal of the enzyme's job is possible, and so aspartic acid is made to very high yields, 98.7 mM from 1 M.

History

Aspartic acid was first discovered in 1827 by Plisson, derived from asparagine, which had been isolated from asparagus juice in 1806, by boiling with a base.

Verwenden

L-aspartic acid is used as a dietary supplement, it can be blended with minerals to make compounds like potassium aspartate, copper aspartate, manganese aspartate, magnesium aspartate, zinc aspartate and more. Increasing the absorption, and hence utilization potentials, of these minerals via the addition of aspartate induces certain health benefits. Many athletes use L-aspartic acid-based mineral supplements orally to enhance their performance capacities. Aspartic acid and glutamic acid play important roles as general acids in enzyme active centers, as well as in maintaining the solubility and ionic character of proteins. It can help promote a robust metabolism, and is sometimes used to treat fatigue and depression. Aspartic acid is used as a component of parenteral and enteral nutrition. In pharmaceutical agents aspartic acid is used as an ammoniac detoxicating agent, hepar function accelerator and fatigue refresher.

Definition

ChEBI: The L-enantiomer of aspartic acid.

Allgemeine Beschreibung

To request documentation for this product, please contact Customer Support and select ‘Product Documentation′. Please note that access to the documentation for this product requires a confidentiality disclosure agreement.

Hazard

Low toxicity.

Biologische Aktivit?t

Endogenous NMDA receptor agonist.

Sicherheitsprofil

Low toxicity by intraperitoneal route. When heated to decomposition emits toxic fumes of NOx.

Asparaginsure Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Asparaginsure Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 1028)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
NINGBO CREATE-BIO ENGINEERING CO.,LTD
+8613906695486
13906695486@126.com China 1 58
Hebei Weibang Biotechnology Co., Ltd
+8615531157085
abby@weibangbio.com China 8810 58
Hebei Chuanghai Biotechnology Co,.LTD
+86-13131129325
sales1@chuanghaibio.com China 5889 58
Shandong Juchuang Chemical Co., LTD
+undefined15030412209
admin@juchuangchem.com China 387 58
Shaanxi TNJONE Pharmaceutical Co., Ltd
+8618092446649
sarah@tnjone.com China 1143 58
Hebei Zhuanglai Chemical Trading Co.,Ltd
+8613343047651
admin@zlchemi.com China 3002 58
Hebei Shengyang Water Conservancy Engineering Co., Ltd.
+8615373025980
clara@hbshengyang.com China 875 58
HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD
+8615350851019
admin@86-ss.com China 1001 58
Capot Chemical Co.,Ltd.
+86-(0)57185586718 +86-13336195806
sales@capot.com China 29791 60
Shanghai Daken Advanced Materials Co.,Ltd
+86-371-66670886
info@dakenam.com China 18751 58

56-84-8(Asparaginsure)Verwandte Suche:


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