Natriumacetat

Sodium acetate Struktur
127-09-3
CAS-Nr.
127-09-3
Bezeichnung:
Natriumacetat
Englisch Name:
Sodium acetate
Synonyma:
Sodium acetate anhydrous;Anhydrous sodium acetate;BUFFER SOLUTION;Natriumacetat;sodium ethanoate;SODIUM ACETATE BUFFER;NA ACETATE;sodiiacetas;femanumber3024;natriumaceticum
CBNumber:
CB1230044
Summenformel:
C2H3NaO2
Molgewicht:
82.03379
MOL-Datei:
127-09-3.mol

Natriumacetat Eigenschaften

Schmelzpunkt:
>300 °C (dec.)(lit.)
Dichte
1.01 g/mL at 20 °C
FEMA 
3024 | SODIUM ACETATE
Brechungsindex
1.4640
Flammpunkt:
>250 °C
storage temp. 
Store at +5°C to +30°C.
Löslichkeit
H2O: 3 M at 20 °C, clear, colorless
pka
4.756[at 20 ℃]
Aggregatzustand
powder
Farbe
white
Wichte
1.45
Geruch (Odor)
Slight acetic acid
Säure-Base-Indikators(pH-Indikatoren)
8.5 - 9.9 at 246 g/l at 25 °C
PH
7.87(1 mM solution);8.33(10 mM solution);8.75(100 mM solution);9.04(1000 mM solution)
Geruchsart
odorless
Wasserlöslichkeit
500 g/L (20 ºC)
Sensitive 
Hygroscopic
Hydrolytic Sensitivity
0: forms stable aqueous solutions
maximale Wellenlänge (λmax)
λ: 260 nm Amax: 0.03
λ: 280 nm Amax: 0.02
Merck 
14,8571
BRN 
3595639
Siedepunkt:
>400°C(decomposition)
Stabilität:
Stable. Incompatible with strong oxidizing agents, halogens. Moisture sensitive.
InChIKey
VMHLLURERBWHNL-UHFFFAOYSA-M
LogP
-3.72
CAS Datenbank
127-09-3(CAS DataBase Reference)
NIST chemische Informationen
Sodium ethanoate(127-09-3)
EPA chemische Informationen
Sodium acetate (127-09-3)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
S-Sätze: 22-24/25
WGK Germany  1
RTECS-Nr. AJ4300010
3
Selbstentzündungstemperatur 607 °C
TSCA  Yes
HS Code  29152200
Giftige Stoffe Daten 127-09-3(Hazardous Substances Data)
Toxizität LD50 orally in Rabbit: 3530 mg/kg LD50 dermal Rabbit > 10000 mg/kg
Bildanzeige (GHS) GHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H320 Causes eye irritation Serious eye damage/eye irritation Category 2B Warnung P264, P305+P351+P338,P337+P313
Sicherheit
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P337+P313 Bei anhaltender Augenreizung: Ärztlichen Rat einholen/ärztliche Hilfe hinzuziehen.

Natriumacetat Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD

WEISSES, HYGROSKOPISCHES, KRISTALLINES PULVER

CHEMISCHE GEFAHREN

Zersetzung beim Erhitzen und bei Kontakt mit starken Säuren unter Bildung von Essigsäurerauchen. Reagiert heftig mit starken Oxidationsmitteln. Schwache Base in wässriger Lösung.

ARBEITSPLATZGRENZWERTE

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

AUFNAHMEWEGE

Aufnahme in den Körper durch Verschlucken.

INHALATIONSGEFAHREN

Nur ungenügende Angaben vorhanden über die Geschwindigkeit, mit der eine gesundheitsschädliche Konzentration in der Luft erreicht wird.

WIRKUNGEN BEI KURZZEITEXPOSITION

WIRKUNGEN BEI KURZZEITEXPOSITION:
Der Stoff ist schwach reizend auf die Augen und die Haut.

LECKAGE

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

S-Sätze Betriebsanweisung:

S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.

Beschreibung

Sodium acetate (CH3COONa) is the sodium salt of acetic acid. It appears as a colorless deliquescent salt with a wide range of applications. In industry, it can be used in textile industry to neutralize sulfuric acid waste streams and as a photoresist upon using aniline dyes. In concrete industry, it can be used as a concrete sealant to mitigate the water damage. In food, it can be used as a seasoning. It can also be used as a buffer solution in lab. In addition, it is also used in heating pads, hand warmers and hot ice. For laboratory use, it can be produced by the reaction between acetate with the sodium carbonate, sodium bicarbonate and sodium hydroxide. In industry, it is prepared from the glacial acetic acid and sodium hydroxide.

Chemische Eigenschaften

Sodium acetate, CH3COONa, also abbreviated NaOAc , also sodium ethanoate, is the sodium salt of acetic acid, was made by the reaction of acetic acid with sodium carbonate. It is soluble in water but less so in alcohol. This colourless salt has a wide range of uses. Sodium acetate was used as a pH modifier for toning baths.

Physikalische Eigenschaften

Anhydrous salt is a colorless crystalline solid; density 1.528 g/cm3; melts at 324°C; very soluble in water; moderately soluble in ethanol. The colorless crystalline trihydrate has a density 1.45 g/cm3; decomposes at 58°C; is very soluble in water; pH of 0.1M aqueous solution is 8.9; moderately soluble in ethanol, 5.3 g/100mL.

Occurrence

Acetic acid or acetates are present in most plant and animal tissues in small, but detectable amounts

Verwenden

Used as buffers.
Acidity regulation (buffering)
Sodium acetate mixed with acetic acid forms a pH buffer, which can be used to stabilise the pH of foods in the pH-range from 3 to 6. The table below gives indicative values of the composition needed to give a certain pH. The mixtures below can be diluted at least 10 times with minimum effect on pH, however, the stability decreases.
Acidity regulation (Sodium acetate buffering)

synthetische

Sodium acetate is prepared by reacting sodium hydroxide or sodium carbonate with acetic acid in aqueous solution. The solution is evaporated to obtain hydrated crystals of sodium acetate.
NaOH + CH3COOH → CH3COONa + H2O
Na2CO3 + CH3COOH → 2CH3COONa + CO2 + H2O

Definition

ChEBI: Sodium acetate is an organic sodium salt. It contains an acetate.

Synthese

For laboratory use, sodium acetate is very inexpensive, and is usually purchased instead of being synthesized. It is sometimes produced in a laboratory experiment by the reaction of acetic acid (ethanoic acid) with sodium carbonate, sodium bicarbonate, or sodium hydroxide. These reactions produce aqueous sodium acetate and water. Carbon dioxide is produced in the reaction with sodium carbonate and bicarbonate, and it leaves the reaction vessel as a gas (unless the reaction vessel is pressurized). This is the well-known "volcano" reaction between baking soda (sodium bicarbonate) and vinegar.
CH3COOH + NaHCO3 → CH3COONa + H2O + CO2
Industrially, sodium acetate is prepared from glacial acetic acid and sodium hydroxide.
CH3COOH + NaOH → CH3COONa + H2O.

Reaktionen

Sodium acetate can be used to form an ester with an alkyl halide such as bromo ethane:
CH3COONa + Br CH2CH3→ CH3COOCH2CH3+ NaBr
Caesium salts catalyze this reaction.

Allgemeine Beschreibung

Sodium Acetate is reported to inhibit the growth of Listeria monocytogenes.

Reaktivität anzeigen

When sodium acetate reacts with strong acids, irritating, noxious vapors of acetic acid are usually produced. Sodium acetate is sufficiently basic to catalyze the violent polymerization of diketene, perhaps as well as other reactive dimers that are susceptible to polymerization in the presence of a mild base.

Biologische Aktivität

Commonly used laboratory reagent

Sicherheitsprofil

Poison by intravenous route. Moderately toxic by ingestion. A skin and eye irritant. Migrates to food from packagmg materials. Violent reaction with F2, m03, diketene. When heated to decomposition it emits toxic fumes of Na2O.

läuterung methode

Crystallise it from acetic acid and keep it under vacuum for 10hours at 120o. Alternatively, it is crystallised from aqueous EtOH, as the trihydrate. This material can be converted to anhydrous salt by heating slowly in a porcelain, nickel or iron dish, so that the salt liquefies. Steam is evolved and the mass again solidifies. Heating is now increased so that the salt melts again. (NB: if it is heated too strongly, the salt can char; avoid this.) After several minutes, the salt is allowed to solidify and is cooled to a convenient temperature (in a desiccator) before being powdered and bottled. The water content should now be less than 0.02%. [Beilstein 2 II 113, 2 III 184, 2 IV 109.]

Natriumacetat Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


Natriumacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 1150)Lieferanten
Firmenname Telefon E-Mail Land Produktkatalog Edge Rate
Jiangsu Kolod Food Ingredients Co.,Ltd.
+86-518-85110578 +8618805133257
sales3257@jskolod.com China 132 60
Shanghai UCHEM Inc.
+862156762820 +86-13564624040
sales@myuchem.com China 6645 58
Henan Fengda Chemical Co., Ltd
+8613613820652
info@fdachem.com China 5505 58
Hebei Saisier Technology Co., LTD
+8618400010335
admin@hbsaisier.cn China 143 58
Hebei Dongdu Import and Export Co. LTD
+86-15333296769 +86-15333296769
manager@cndongdu.com China 71 58
Henan Bao Enluo International TradeCo.,LTD
+86-17331933971 +86-17331933971
deasea125996@gmail.com China 2504 58
Shandong Juchuang Chemical Co., LTD
+86-18885615001 +86-18885615001
admin@juchuangchem.com China 387 58
Shaanxi TNJONE Pharmaceutical Co., Ltd
+86-13474506593 +86-13474506593
sarah@tnjone.com China 230 58
Capot Chemical Co.,Ltd.
571-85586718 +8613336195806
sales@capotchem.com China 29797 60
Henan Tianfu Chemical Co.,Ltd.
+86-0371-55170693 +86-19937530512
info@tianfuchem.com China 21700 55

127-09-3(Natriumacetat)Verwandte Suche:


  • SODIUM ACETATE ANHYDROUS USP
  • Sodium Acetate Anhydrous, Medical Grade
  • SodiumAcetateAnhydrousAr
  • SodiumAcetateAnhydrosGr
  • SodiumAcetate,Anhydrous,A.R.A1692
  • SodiumAcetateAnhydrousAcs/Usp/Fcc
  • SodiumAcetateAnhydrousPowderPhoto
  • SodiumAcetateAnhydrousC2H3NaO2
  • SodiumAcetateAnhydrousExtraPure
  • SodiumAcetateAnhydrousFcc
  • Acetic acid, sodium salt, anhydrous, DNAse, RNAse and Protease free, for molecular biology, 99+%
  • Acetic acid, sodium salt, anhydrous, extra pure, 99+%
  • Acetic acid, sodium salt, anhydrous, for analysis ACS, 99+%
  • Acetic acid, sodium salt, anhydrous, for analysis, 99+%
  • SODIUM ACETATE, ANHYDROUS BIO-REFINED
  • SODIUM ACETATE, ANHYDROUS REAGENT (ACS)
  • Sodium Acetate-12C (depleted of 13C)
  • Sodium acetate buffer pH 5.2, solution 3M
  • Sodium acetate buffer pH 7.0, solution 3M
  • Sodiumacetate,anhydrous,99+%(ACS)
  • SODIUMACETATE,ANHYDROUS,BIOTECHGRADE
  • SODIUMACETATE,ANHYDROUS,TECHNICAL
  • Sodium acetate, anhydrous, food grade
  • Sodium acetate, anhydrous, ACS, 99.0% min
  • Sodium acetate, anhydrous, 99.997% (metals basis)
  • SODIUM ACETATE ANHYDROUS extrapure AR
  • NATRIUMACETAT, WASSERFREI
  • SODIUM ACETATE - SOLUTION 3 M (PH 4.6)
  • SODIUM ACETATE - SOLUTION 3 M (PH 7.0)
  • Sodium acetate Acetic acid sodium salt
  • Sodium acetate anhydrous, extra pure, USP, FCC, E262
  • Sodium acetate, solution 1 mol/l
  • Sodium acetate anhydrous, reagent grade, ACS
  • Sodium acetate anhydrous, molecular biology grade
  • "Sodium acetate, anhydrous/ 99+%"
  • Sodium acetate/ 99.99+%
  • SODIUM ACETATE, ACS
  • Sodium acetate ,99% [anhydrous]
  • Sodium Acetate (1 g) (AS)
  • SODIUM ACETATE - 13C DEPLETED
  • Acetic acid, sodiuM salt, 99+%, ACS reagent, anhydrous
  • Acetic acid, sodiuM salt, anhydrous, extra pure, 99+% 1KG
  • Acetic acid, sodiuM salt, anhydrous, for analysis, 99+% 250GR
  • Acetic acid, sodiuM salt, 99%, for HPLC, anhydrous
  • Acetic acid, sodiuM salt, 99+%, for Molecular biology, anhydrous, DNAse, RNAse and Protease free
  • Acetic acid, sodiuM salt, 99%, for biocheMistry, anhydrous
  • SODIUM ACETATE ANHYDROUS FOR ANALYSIS
  • SODIUM ACETATE ANHYD 99.99 SUPRA
  • SodiuM acetate ACS reagent, >=99.0%
  • SodiuM acetate, >=99.999% (Metals basis)
  • Sodium acetate, anhydrate
  • Mettler-Toledo Calibration substance ME 30130599, Sodium acetate anhydrous
  • Sodium anhydrous
  • Sodium acetateanhydrous ,Acetic acid sodium salt
  • Sodium acetate 99.995% trace metals basis
  • Sodium acetate anhydrous, free-flowing, Redi-Dri, ACS reagent, >=99.0%
  • SODIUM ACETATE BIOXTRA
  • SODIUM ACETATE SOLUTION, F. MOL. BIO
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