L-(-)-Malic Acid Basic information |
Product Name: | L-(-)-Malic Acid |
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;MalicAcidSeries;Carboxylic Acids (Chiral);Chiral chemicals;Chiral Reagents;Food & Feed ADDITIVES;Chiral Building Blocks;for Resolution of Bases;Optical Resolution;Synthetic Organic Chemistry;Food additive and acidulant;Imidazoles ,Heterocyclic Acids |
Mol File: | 97-67-6.mol |
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L-(-)-Malic Acid Chemical Properties |
Melting point | 101-103 °C(lit.) |
alpha | -2 º (c=8.5, H2O) |
Boiling point | 167.16°C (rough estimate) |
density | 1.60 |
FEMA | 2655 | L-MALIC ACID |
refractive index | -6.5 ° (C=10, ) |
Fp | 220 °C |
storage temp. | Store at RT. |
solubility | H2O: 0.5 M at 20 °C, clear, colorless |
form | Powder |
color | White |
Specific Gravity | 1.595 (20/4℃) |
PH | 2.2 (10g/l, H2O, 20℃) |
pka | (1) 3.46, (2) 5.10(at 25℃) |
optical activity | [α]20/D 30±2°, c = 5.5% in pyridine |
Water Solubility | soluble |
Merck | 14,5707 |
JECFA Number | 619 |
BRN | 1723541 |
InChIKey | BJEPYKJPYRNKOW-REOHCLBHSA-N |
CAS DataBase Reference | 97-67-6(CAS DataBase Reference) |
NIST Chemistry Reference | Butanedioic acid, hydroxy-, (s)-(97-67-6) |
EPA Substance Registry System | Butanedioic acid, 2-hydroxy-, (2S)- (97-67-6) |
Safety Information |
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 26-36-37/39 |
WGK Germany | 3 |
RTECS | ON7175000 |
TSCA | Yes |
HS Code | 29181980 |
MSDS Information |
Provider | Language |
---|---|
L(-)-Malic acid | English |
ACROS | English |
SigmaAldrich | English |
ALFA | English |
L-(-)-Malic Acid 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. |
Chemical Properties | L-Malic acid is nearly odorless (sometimes a faint, acrid odor). This compound has a tart, acidic, nonpungent taste. |
Chemical Properties | clear colourless solution |
Occurrence | Occurs in maple sap, apple, melon, papaya, beer, grape wine, a, sake, kiwifruit and chicory root. |
Uses | The naturally occuring isomer is the L-form which has been found in apples and many other fruits and plants. Selective α-amino protecting reagent for amino acid derivatives. Versatile synthon for the preparation of chiral compounds including κ-opioid rece |
Uses | 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. |
Preparation | By hydration of maleic acid; by fermentation from sugars. |
Purification Methods | Crystallise S-malic acid (charcoal) from ethyl acetate/pet r (b 55-56o), keeping the temperature below 65o. Or dissolve it by refluxing in fifteen parts of anhydrous diethyl r, decant, concentrate to one-third volume and crystallise it at 0o, repeatedly to constant melting point. [Beilstein 3 IV 1123.] |
L-(-)-Malic Acid Preparation Products And Raw materials |