???? ??
|
|
???? ?? ??
- ???
- 292 °C
- ??
- 1.57 g/cm3 at 25 °C (lit.)
- ???
- <0.0000001 hPa ( 25 °C)
- ???
- n
20/D 1.370
- ???
- >250℃
- ?? ??
- room temp
- ???
- H2O: 1 M at 20 °C, ??, ??
- ?? ?? (pKa)
- 4.756[at 20 ℃]
- ??? ??
- ??
- ??? ??
- ??? ??
- ??
- ???? ?? ????
- Specific Gravity
- 1.57
- ??
- ?? ??
- pH ??
- 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)
- ???? ??
- synthetic
- ???
- 2694 g/L (25 ºC)
- ??
- Hygroscopic
- Hydrolytic Sensitivity
- 0: forms stable aqueous solutions
- ?? ??(λmax)
- λ: 260 nm Amax: 0.04
λ: 280 nm Amax: 0.02
- Merck
- 14,7605
- BRN
- 3595449
- ???
- ?? ???? ???. ????. ?? ???? ???? ????.
- ??? ?? ??
- ?? ???
- InChI
- 1S/C2H4O2.K/c1-2(3)4;/h1H3,(H,3,4);/q;+1/p-1
- InChIKey
- SCVFZCLFOSHCOH-UHFFFAOYSA-M
- SMILES
- [K+].CC([O-])=O
- LogP
- -3.72
- CAS ??????
- 127-08-2(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ????? | 26-24/25 | ||
|---|---|---|---|
| WGK ?? | 1 | ||
| RTECS ?? | AJ3325000 | ||
| ?? ?? ?? | Hygroscopic | ||
| TSCA | TSCA listed | ||
| HS ?? | 29159000 | ||
| ???? ??? | 13 - Non Combustible Solids | ||
| ?? | LD50 orally in rats: 3.25 g/kg, H. F. Smyth et al., Am. Ind. Hyg. Assoc. J. 30, 470 (1969) | ||
| ???? ?? | KE-29069 |
???? ?? C??? ??, ??, ??
??
??? ?? ?? ??. ??? 292℃. d 1.8. ???. ??? ? 0℃, 217g/100g ; 90℃, 369g/100g : ??? 33g/100g : ???? ?? ???.??
???, ?? ??? ??. ?? ???? ????.??
Potassium acetate (CH3CO2K) is the potassium salt of acetic acid.??? ??
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.??
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??
ChEBI: A potassium salt comprising equal numbers of potassium and acetate ions?? ??
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
?? ??
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.
?? ??
Potassium acetate is generally used as an acidity regulator, buffer, preservative and firming agent.???? ?? ?? ?? ? ???
???
?? ??
???
???
2,2'-(1-Methyl-2,6-piperidinediyl)diacetophenon
4-AMINO-3-METHOXYPHENYLBORONIC ACID, PINACOL ESTER
3,4-(??????)??????, ?????? ???
5-bromo-1H-indazole
(4-OXO-3,4-DIHYDROPHTHALAZIN-1-YL)ACETIC ACID
4-Nitrophenylboronic acid
ribonucleic acid for injection
Deoxycorticosterone acetate
1-????????
2,4-???????????
5-?????
5-BROMO-4-(TRIFLUOROMETHYL)PYRIMIDINE
3-(1,3-?????-5-YL)-2-??????????
2,5-????????????
2-(4-?????)???
????
?????????
17,21-dihydroxy-16beta-methylpregna-1,4,9(11)-triene-3,20-dione 21-acetate
3,4-????
FENPICLONIL
??????
??-3-????
4-?????
2-Amino-9,9-dimethylfluorene
????-21-????
???? ?? ?? ??
???( 902)?? ??
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