Kaliumacetat

Bezeichnung:Kaliumacetat

CAS-Nr127-08-2

Englisch Name:Potassium Acetate

CBNumberCB8690168

SummenformelC2H3KO2

Molgewicht98.14

MOL-Datei127-08-2.mol

Synonyma

Kaliumacetat

Essigsäure, Kaliumsalz

Kaliumacetat physikalisch-chemischer Eigenschaften

Schmelzpunkt	292 °C
Dichte	1.57 g/cm3 at 25 °C (lit.)
Brechungsindex	n20/D 1.370
FEMA	2920 \| POTASSIUM ACETATE
Flammpunkt	>250℃
storage temp.	room temp
Löslichkeit	65% soluble in water, 35% soluble in alcohol, insoluble in most oils
pka	4.756[at 20 ℃]
Aggregatzustand	Solid
Wichte	1.57
Farbe	White to light brown
Geruch (Odor)	Odorless
Säure-Base-Indikators(pH-Indikatoren)	7 - 9 at 98.2 g/l at 25 °C
PH	7.87(1 mM solution);8.33(10 mM solution);8.75(100 mM solution);9.06(1000 mM solution)
Wasserlöslichkeit	2694 g/L (25 ºC)
Sensitive	Hygroscopic
Hydrolytic Sensitivity	0: forms stable aqueous solutions
maximale Wellenlänge (λmax)	λ: 260 nm Amax: 0.04 λ: 280 nm Amax: 0.02
Merck	14,7605
BRN	3595449
Stabilität	Deliquescent. Stable. Incompatible with strong oxidizing agents.
InChIKey	SCVFZCLFOSHCOH-UHFFFAOYSA-M
LogP	-3.72
CAS Datenbank	127-08-2(CAS DataBase Reference)
NIST chemische Informationen	Potassium acetate(127-08-2)
EPA chemische Informationen	Potassium acetate (127-08-2)

Sicherheit

S-Sätze:	26-24/25
WGK Germany	1
RTECS-Nr.	AJ3325000
Hazard Note	Hygroscopic
TSCA	Yes
HS Code	29159000
Toxizität	LD50 orally in rats: 3.25 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969)

Gefahreninformationscode (GHS)

Potassium Acetate Chemische Eigenschaften,Einsatz,Produktion Methoden

ERSCHEINUNGSBILD
WEISSE FLOCKEN ODER 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 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.
R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R25:Giftig beim Verschlucken.
R23/24/25:Giftig beim Einatmen, Verschlucken und Berührung mit der Haut.
R21:Gesundheitsschädlich bei Berührung mit der Haut.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
Beschreibung
Potassium acetate (CH₃CO₂K) is the potassium salt of acetic acid.
Chemische Eigenschaften
Pure potassium acetate is odorless or has a faint acetic odor and a saline taste.
Chemische Eigenschaften
Potassium acetate, KC2H302, is a white, deliquescent solid, soluble in water and alcohol, insoluble in ether, that melts at 292°C. It is used as an analytical reagent, dehydrating agent, in medicine, and in crystal glass manufacture.
Verwenden
Potassium acetate was originally used in the preparation of Cadet's fuming liquid, the first organometallic compound produced. It is used as diuretic and urinary alkaliser, and acts by changing the physical properties of the body fluids and by functioning as an alkali after absortion.
Verwenden
Potassium acetate is used in the manufacture of glass; as a softening agent for papers and textiles; as a dehydrating agent; and as a buffer. In medicine it is used as an expectorant and diuretic.
Verwenden
Used as buffers.
Verwenden
1) Potassium acetate, crystalline powder, USP is, as its name suggests, the potassium salt of acetic acid and is used as a catalyst for producing polyurethanes2) In the food industry it is used as a food additive, an acidity regulator and a preservative
Definition
ChEBI: A potassium salt comprising equal numbers of potassium and acetate ions
synthetische
Potassium Acetate can be prepared by treating a potassium-containing base such as potassium hydroxide or potassium carbonate with acetic acid:
2 CH₃COOH + K₂CO₃→ 2 CH₃CO₂K + CO₂ + H₂O
This sort of reaction is known as an acid-base neutralization reaction. Potassium acetate is the salt that forms along with water as acetic acid and potassium hydroxide are neutralized together.
Conditions/substances to avoid are: moisture, heat, flames, ignition sources, and strong oxidizing agents.
synthetische
Potassium acetate is prepared by addition of potassium carbonate in a small volume of water to acetic acid solution, followed by evaporation and crystallization:
K2CO3+ 2CH3COOH →2CH3COOK + H2O
Application
Potassium acetate is used as a catalyst in the production of polyurethanes.
Potassium acetate can be used as a deicer instead of chloride salts such as calcium chloride or magnesium chloride. It offers the advantage of being less aggressive on soils and much less corrosive, and for this reason is preferred for airport runways. It is, however, more expensive. Potassium acetate is also the extinguishing agent used in class K fire extinguishers because of its ability to cool and form a crust over burning oils.
3 – 1 - Food additive
Potassium acetate is used as a food additive as a preservative and acidity regulator. In the European Union, it is labeled by the E number E261 ; it is also approved for usage in the USA and Australia and New Zealand. Potassium diacetate (CAS # 4251-29-0) with formula KH(O₂CCH₃)₂ is a related food additive with the same E number as potassium acetate.
3 – 2 - Medicine and biochemistry
In medicine, potassium acetate is used as part of replacement protocols in the treatment of diabetic ketoacidosis because of its ability to break down into bicarbonate and help neutralize the acidotic state.
In molecular biology, potassium acetate is used to precipitate dodecyl sulfate (DS) and DS-bound proteins, allowing the removal of proteins from DNA. It is also used as a salt for the ethanol precipitation of DNA.
Allgemeine Beschreibung
Potassium acetate is generally used as an acidity regulator, buffer, preservative and firming agent.
Flammability and Explosibility
Non flammable

Potassium Acetate Upstream-Materialien And Downstream Produkte

Kaliumacetat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

127-08-2, Potassium Acetate Verwandte Suche:

Send Inquriy