L-Malic acid 97-67-6

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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;bc0001;97-67-6 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) bulk density 600kg/m3 density  1.60 vapor pressure  0Pa at 25℃ refractive index  -6.5 ° (C=10, Acetone) FEMA  2655 | L-MALIC ACID Fp  220 °C storage temp.  Store below +30°C. solubility  H2O: 0.5 M at 20 °C, clear, colorless form  Powder Specific Gravity 1.595 (20/4℃) color  White Odor odorless PH 2.2 (10g/l, H2O, 20℃) pka (1) 3.46, (2) 5.10(at 25℃) Odor Type odorless Optical Rotation [α]20/D 30±2°, c = 5.5% in pyridine biological source microbial Water Solubility  soluble Merck  14,5707 JECFA Number 619 BRN  1723541 InChIKey BJEPYKJPYRNKOW-REOHCLBHSA-N LogP -1.68 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 L-Malic acid Usage And Synthesis Description L-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 L-Malic acid is used as a food additive, Selective α-amino protecting reagent for amino acid derivatives. Versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D3 analogue, and phoslactomycin B. 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 L-Malic acid can be prepared by hydration of maleic acid; by fermentation from sugar. General Description L-Malic acid is an organic acid that is commonly found in wine. It plays an important role in wine microbiological stability. Biochem/physiol Actions L-Malic acid is a part of cellular metabolism. Its application is recognized in pharmaceutics. It is useful in the treatment of hepatic malfunctioning, effective against hyper-ammonemia. It is used as a part of amino acid infusion. L-Malic acid also serves as a nanomedicine in the treatment of brain neurological disorders. A TCA (Krebs cycle) intermediate and partner in the malic acid aspartate shuttle. 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 diethyl ether, decant, concentrate to one-third volume and crystallise it at 0o, repeatedly to constant melting point. [Beilstein 3 IV 1123.]

First aid measures

General advice Consult a physician. Show this material safety data sheet to the doctor in attendance. If inhaled If breathed in, move person into fresh air. If not breathing, give artificial respiration. Consult a physician. In case of skin contact Wash off with soap and plenty of water. Consult a physician. In case of eye contact Rinse thoroughly with plenty of water for at least 15 minutes and consult a physician. If swallowed Never give anything by mouth to an unconscious person. Rinse mouth with water. Consult a physician.

Firefighting measures

Suitable extinguishing media Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide. Special hazards arising from the substance or mixture Carbon oxides Nitrogen oxides (NOx) Advice for firefighters Wear self-contained breathing apparatus for firefighting if necessary.



——  Q&A  ——

Q1:Do you provide sample?

A: Yes, we can provide free sample, you only need pay the shipping cost.

Q2: What is the lead time?

A: For stock goods, it usually take about 5-7 days by air, 15-30 days by sea,For customized products, the delivery time needs to be confirmed based on the actual situation.

Q3: How can I buy? What is the payment method?

A: You can contract us through Email or you can browse our website:orientchem.cc, we have bank transfer,

A：We attach great importance to after-sales service of our products. If there are any quality issues, please contact us within 30 days of receiving the goods and we will handle returns and exchanges for you.