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2-Ethylhexanoic acid Basic information

Product Name:	2-Ethylhexanoic acid
Synonyms:	(RS)-2-Ethylhexansαure;2-Ethyl-1-hexanoic acid;2-Ethyl-1-hexanoicacid;2-ethylhexanoic;2-ethylhexanoicacid(eha);2-ethyl-hexansyra;2-Ethylhexansαure;alpha-Ethylhexanoic acid
CAS:	149-57-5
MF:	C8H16O2
MW:	144.21
EINECS:	205-743-6
Product Categories:	Industrial/Fine Chemicals;Building Blocks;C8;Carbonyl Compounds;Carboxylic Acids;Chemical Synthesis;Organic Building Blocks
Mol File:	149-57-5.mol

2-Ethylhexanoic acid Chemical Properties

Melting point	-59 °C
Boiling point	228 °C(lit.)
density	0.906
vapor density	4.98 (vs air)
vapor pressure	<0.01 mm Hg ( 20 °C)
refractive index	n20/D 1.425(lit.)
Fp	230 °F
storage temp.	room temp
solubility	1.4g/l
form	Liquid
color	Clear
PH	3 (1.4g/l, H2O, 20℃)
explosive limit	1.04%, 135°F
Water Solubility	2 g/L (20 ºC)
BRN	1750468
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, reducing agents, bases.
CAS DataBase Reference	149-57-5(CAS DataBase Reference)
NIST Chemistry Reference	Hexanoic acid, 2-ethyl-(149-57-5)
EPA Substance Registry System	Hexanoic acid, 2-ethyl-(149-57-5

2-Ethylhexanoic acid Usage And Synthesis

Chemical Properties colourless liquid

Uses Paint and varnish driers (metallic salts). Ethylhexoates of light metals are used to convert some mineral oils to greases. Its esters are used as plasticizers.

General Description 2-Ethylhexanoic acid is a colorless to light yellow liquid with a mild odor. 2-Ethylhexanoic acid will burn though 2-Ethylhexanoic acid may take some effort to ignite. 2-Ethylhexanoic acid is slightly soluble in water. 2-Ethylhexanoic acid is corrosive to metals and tissue. 2-Ethylhexanoic acid is used to make paint dryers and plasticizers.

Reactivity Profile 2-Ethylhexanoic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in 2-Ethylhexanoic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reaction