produktbeskrivelse

L-eplesyre naturlig Grunnleggende informasjon

Produktnavn:	L-eplesyre naturlig
Synonyms:	L-(-)-Malic acid, CP;Butanedioic acid, 2-hydroxy-, (2S)-;pinguosuan;Butanedioicacid,hydroxy-,(S)-;hydroxy-,(S)-Butanedioicacid;l-(ii)-malicacid;L-Gydroxybutanedioicacid;L-Mailcacid
CAS:	97-67-6
MF:	C4H6O5
MW:	134.09
EINECS:	202-601-5
Product Categories:	Plant extracts;Aliphatics;Chiral Reagents;Chiral chemicals;MalicAcidSeries;Carboxylic Acids (Chiral);Chiral Building Blocks;for Resolution of Bases;Optical Resolution;Synthetic Organic Chemistry;Food & Feed ADDITIVES;Food additive and acidulant;Imidazoles ,Heterocyclic Acids
Mol-fil:	97-67-6.mol

L-malic acid natural Chemical Properties

Melting point	101-103 °C(lit.)
alfa	-2 º (c=8.5, H2O)
Kokepunkt	167.16°C (rough estimate)
density	1.60
FEMA	2655 \| L-MALIKSYRE
brytningsindeks	-6.5 ° (C=10, Acetone)
Fp	220 °C
storage temp.	Store at RT.
løselighet	H2O: 0.5 M at 20 °C, clear, colorless
skjema	Pulver
color	White
Specific Gravity	1.595 (20/4℃)
PH	2,2 (10g / l, H2O, 20â „ƒ)
pka	(1) 3.46, (2) 5.10 (ved 25â „ƒ)
optisk aktivitet	[α]20/D 30±2°, c = 5.5% in pyridine
Vannløselighet	løselig
Merck	14,5707
JECFA Number	619
BRN	1723541
InChIKey	BJEPYKJPYRNKOW-REOHCLBHSA-N
CAS DataBaseReference	97-67-6(CAS DataBase Reference)
NISTChemistry Reference	Butandisyre, hydroksy-, (s) - (97-67-6)
EPA Substance Registry System	Butanedioic acid, 2-hydroxy-, (2S)- (97-67-6)

L-malic acid natural Safety Information

L-malic acid natural MSDS Information

L-malic acid natural Usage And Synthesis

Description	ι-Malic acid is nearly odorless (sometimes a faint, acrid odor) with a tart, acidic taste. It is nonpungent. May be prepared by hydration of maleic acid; by fermentation from sugars.
Kjemiske egenskaper	L-eplesyre er nesten luktfri (noen ganger en svak, skarp lukt). Denne forbindelsen har en syrlig, sur, ikke-skarp smak.
Chemical Properties	klar fargeløs løsning
Hendelse	Forekommer i lønnesaft, eple, melon, papaya, øl, druevin, kakao, sake, kiwi og cikoriarot.
Bruker	Den naturlig forekommende isomeren er L-formen som har blitt funnet i epler og mange andre frukter og planter. Selektiv Î ± -aminobeskyttende reagens for aminosyrederivater. Allsidig synthon for fremstilling av chiralforbindelser inkludert Îº-opioidmottak
Bruker	Intermediate in chemical synthesis. Chelating and buffering agent. Flavoring agent, flavor enhancer and acidulant in foods.
Definition	ChEBI: An optically active form of malic acid having (S)-configuration.
Forberedelse	Ved hydrering av maleinsyre; ved gjæring fra sukker.
Rensing Metoder	Crystallise S-malic acid (charcoal) from ethyl acetate/pet ether (b 55-56o), keeping the temperature below 65o. Or dissolve it by refluxing in fifteen parts of anhydrous diethyl ether, decant, concentrate to one-third volume and crystallise it at 0o, repeatedly to constant melting point. [Beilstein 3 IV 1123.]