Used as an acidulate in cool drinks, frozen foods, processed foods; Used as color-keeper and antiseptic of juice and as emulsion stabilizer of egg yolk. DL-Malic acid can also be used as pharmaceutical intermediate, cosmetic, rinse, metal cleaner, buffering agent, retarder in textile industry, fluorescent whitening agent of polyester fiber.
| Description |
White crystalline granule or powder |
| Assay(as C4H6O5) |
99.0%~100.5% |
| Specific rotation [α]D 25 |
-0.10°~ +0.10° |
| Heavy Metals(as Pb) |
10mg/kg max |
| Fumaric acid |
1.0% max |
| Residue on Ignition |
0.1% max |
| Maleic acid |
0.05% max |
| Water-insoluble Matter |
0.1% max |
| Arsenic (as As2O3) |
4mg/kg max |
| Sulphate |
300mg/kg max |
| Chloride |
100mg/kg max |
| Initial melting point |
127.0 min |
| L-(-)-Malic Acid Basic information |
| Product Name: |
L-(-)-Malic Acid |
| Synonyms: |
pinguosuan;(S)-(-)-HYDROXYSUCCINIC ACID;(S)-HYDROXYSUCCINIC ACID;(S)-HYDROXYBUTANEDIOIC ACID;(S)-(-)-MALIC ACID;(S)-2-HYDROXYBUTANEDICARBOXYLIC ACID;S(-)-2-HYDROXYSUCCINIC ACID;NATURAL APPLE ACID |
| CAS: |
97-67-6 |
| MF: |
C4H6O5 |
| MW: |
134.09 |
| EINECS: |
202-601-5 |
| Product Categories: |
Food additive and acidulant;Imidazoles ,Heterocyclic Acids;Food & Feed ADDITIVES;MalicAcidSeries;Carboxylic Acids (Chiral);Chiral Building Blocks;for Resolution of Bases;Optical Resolution;Synthetic Organic Chemistry;Chiral chemicals;Aliphatics;Chiral Reagents;Plant extracts |
| Mol File: |
97-67-6.mol |
| |
| |
| 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, Acetone) |
| 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 (20/4ºC) |
| PH |
2.2 (10g/l, H2O, 20ºC) |
| pka |
(1) 3.46, (2) 5.10(at 25ºC) |
| 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) |
| Hazard Codes |
Xi |
| Risk Statements |
36/37/38 |
| Safety Statements |
26-36-37/39 |
| WGK Germany |
3 |
| RTECS |
ON7175000 |
| TSCA |
Yes |
| HS Code |
29181980 |
| 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, cocoa, 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 ether (b 55-56o), keeping the temperature below 65o. Or dissolve it by refluxing in fifteen parts of anhydrous diethyer, 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 |
| Raw materials |
Calcium carbonate-->Carbomer 940-->(2S)-1-(3-Acetylthio-2-methyl-1-oxopropyl)-L-proline-->Disodium fumarate |
| Preparation Products |
(R)-(-)-3-Quinuclidinol -->(S)-3-Hydroxypyrrolidine hydrochloride-->(S)-1-Benzyl-3-pyrrolidinol -->(-)-(1S,4R)-4-AMINOCYCLOPENT-2-ENECARBOXYLIC ACID-->(R)-3-Quinuclidinol hydrochloride-->(S)-(+)-3-Hydroxytetrahydrofuran-->Fluorescent Brightener 135-->Diethyl malate |
Hunan JK International Trade Corporation / JK BIO-CHEM CO.,LTD is a professional exporter of food/feed additives and food /feed ingredients in China. With years of development, now we are able to provide the following food additives and food ingredients: thickeners, antioxidants, preservatives, vitamins, sweeteners, proteins, acidulants, nutritional supplements, flavours, coenzyme and so on.
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Our staff of sales and technical support is available to help you in selecting the right protection for your application as well as to provide you with samples of our products for evaluation. At High Five, we are committed to providing the highest level of customer service, competitive pricing, speedy delivery and a comprehensive, cutting-edge product offering. Our ultimate goal is your satisfaction.
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