Natriumacetat

NaOAC · Sodium acetate anhydrous · AcONa · Anhydrous sodium acetate · BUFFER SOLUTION · FEMA 3024 · Natriumacetat · sodium ethanoate

https://huagongshe.com/de/chemical/517045

Identifikatoren & physikalische Daten

CAS No.	127-09-3
Summenformel	C2H3NaO2
Durchschnittliche Molmasse	82,03 g/mol
Monoisotopische Masse	82,00307362 g/mol
SMILES	CC(=O)[O-].[Na+]
InChIKey	VMHLLURERBWHNL-UHFFFAOYSA-M
PubChem CID	517045
ChEMBL	CHEMBL1354
ChEBI	CHEBI:32954
EC No.	204-823-8
DTXSID	DTXSID2027044
Lokaler Name	Natriumacetat

Chemische & physikalische Eigenschaften

Polarare Oberfläche (TPSA)	40,1
H-Brücken-Donoren	0
H-Brücken-Akzeptoren	2
Frei drehbare Bindungen	0
Schwere Atome	5
Formalladung	0
Komplexität	34
pH	8,0-9,5 (1 % aqueous solution)7.87(1 mM solution)8.33(10 mM solution)8.75(100 mM solution)9.04(1000 mM solution)
Geruch	Odorless
Dichte	1.528 g/ml1.5 g/cm³1.528 @25 °C1.01 g/mL at 20 °C
Color/Form	WHITE GRANULAR POWDER OR MONOCLINIC CRYSTALSColorless
Löslichkeit	WATER: 119 G/100 ML @ 0 °C, 170.15 G/100 ML @ 100 °CSLIGHTLY SOL IN ALCOHOLSolubility in water, g/100ml at 20 °C: 46.5H2O: 3 M at 20 °C, clear, colorless500 g/L (20 ºC)
Schmelzpunkt	324 °C328 °C328.2 °C>300 °C (dec.)(lit.)
Dampfdruck	0.00000071 [mmHg]
Brechungsindex	INDEX OF REFRACTION: 1.4641.4640
Physical Description	Other SolidDry PowderLarge CrystalsLiquidAnhydrous:White, odourless, granular, hygroscopic powderWhite hygroscopic solid[ICSC] Colorless odorless hygroscopic solid[CHEMINFO] White odorless crystalline powder[MSDSonline]WHITE HYGROSCOPIC CRYSTALLINE POWDER.
Stability/Shelf Life	SOLUTIONS ARE STABLEEFFLORESCES IN WARM, DRY AIR /SODIUM ACETATE TRIHYDRATE, USP/
Selbstentzündungstemperatur	1125 °F /SODIUM ACETATE TRIHYDRATE/607 °C
Other Experimental Properties	HYGROSCOPICCOLORLESS, TRANSPARENT CRYSTALS OR GRANULAR, CRYSTALLINE POWDERODORLESS OR HAS FAINT, ACETOUS ODOR. /SODIUM ACETATE TRIHYDRATE, USP/SOL: 76.2 G/100 ML WATER AT 0 °C138.8 G/100 ML WATER @ 50 °C2.1 G/100 ML ALC AT 18 °CSOL IN ETHERINDEX OF REFRACTION: 1.464 (BETA)DENSITY 1.45 G/MLMP 58 °CCOLORLESS MONOCLINIC PRISMS. /SODIUM ACETATE TRIHYDRATE/
FEMA	3024 \| SODIUM ACETATE
Flammpunkt	>250 °C
Lagerbedingungen	Store at +5°C to +30°C.
Aggregatzustand	powder
pKa (Säurekonstante)	4.756[at 20 ℃]
Wichte	1.45
Farbe	white
Geruch	Slight acetic acid
Geruchsart	odorless
Biologische Quelle	synthetic
Spezifische Wärmekapazität	Cp(crystal): 0.97 J/(g·K), at 25℃
Merck	14,8571
Siedepunkt	>400°C(decomposition)
BRN	3595639
Stabilität	Stable. Incompatible with strong oxidizing agents, halogens. Moisture sensitive.
Kosmetik-Inhaltsstoffe Funktionen	BUFFERINGFRAGRANCE
InChI	1S/C2H4O2.Na/c1-2(3)4/h1H3,(H,3,4)/q+1/p-1
InChIKey	VMHLLURERBWHNL-UHFFFAOYSA-M
SMILES	[Na+].CC([O-])=O
LogP (Verteilungskoeffizient)	-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)
Absorption	≤0.01 at 260nm in H2O at 100mM≤0.01 at 280nm in H2O at 100mM

Sicherheit & Vorschriften

GHS-Einstufung	This chemical does not meet GHS hazard criteria for 95.4% (1320 of 1383) of all reports.Not ClassifiedReported as not meeting GHS hazard criteria by 1320 of 1383 companies (only 4.6% companies provided GHS information). For more detailed information, please visit ECHA C&L website.Aggregated GHS information provided per 1383 reports by companies from 10 notifications to the ECHA C&L Inventory.Reported as not meeting GHS hazard criteria per 1320 of 1383 reports by companies.There are 7 notifications provided by 63 of 1383 reports by companies with hazard statement code(s).Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Regulatorische Informationen	Chemical: Acetic acid, sodium saltAcetic acid, sodium salt (1:1) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Acetic acid, sodium salt (1:1) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 27-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15311Sodium acetate: Does not have an individual approval but may be used under an appropriate group standard
Weitere Sicherheitsinformationen	IMAP assessments - Acetic acid, sodium salt: Human health tier I assessmentIMAP assessments - Acetic acid, sodium salt: Environment tier I assessment
Brandgefahren	Combustible.
Gefahrenübersicht	Emergency treatment: Irritants[HSDB] A mild skin and eye irritant[ICSC] May cause mild skin and eye irritation, based on animal studies[CHEMINFO] Causes toxic psychosis in rabbits after intravenous dose >1300 mg/kg[RTECS]
FDA-Anforderungen	Manufacturers, packers, and distributors of drug and drug products for human use are responsible for complying with the labeling, certification, and usage requirements as prescribed by the Federal Food, Drug, and Cosmetic Act, as amended (secs 201-902, 52 Stat. 1040 et seq., as amended

Anwendungen & Verwendung

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.

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.

Herstellung & Synthese

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