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240176

Sigma-Aldrich

DL-Malic acid

DL-Malic acid

ReagentPlus®, ≥99%

Synonym(s):

(±)-2-Hydroxysuccinic acid, DL-Hydroxybutanedioic acid

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About This Item

Linear Formula:
HO2CCH2CH(OH)CO2H
CAS Number:
6915-15-7
Molecular Weight:
134.09
Beilstein:
1723539
EC Number:
230-022-8
MDL number:
MFCD00064212
UNSPSC Code:
12352100
PubChem Substance ID:
24854408
NACRES:
NA.22
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vapor density

4.6 (vs air)

Quality Level

200

vapor pressure

<0.1 mmHg ( 20 °C)

product line

ReagentPlus®

Assay

≥99%

form

solid

autoignition temp.

644 °F

mp

131-133 °C (lit.)

solubility

acetone: soluble 17.75g/100g at 20 °C(lit.)
diethyl ether: soluble 0.84g/100g at 20 °C(lit.)
dioxane: soluble 22.7 g/100g at 20 °C(lit.)
ethanol: soluble 45.53g/100g at 20 °C(lit.)
methanol: soluble 82.7 g/100g at 20 °C(lit.)
water: soluble 55.8g/100g at 20 °C(lit.)
benzene: insoluble(lit.)

functional group

carboxylic acid
hydroxyl

SMILES string

OC(CC(O)=O)C(O)=O

InChI

1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)

InChI key

BJEPYKJPYRNKOW-UHFFFAOYSA-N

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General description

The chiral resolution of DL-malic acid by ligand-exchange capillary electrophoresis was studied[1].

Application

DL-Malic acid (MA) can be used:
  • As a dopant in the ammonium dihydrogen phosphate (ADP) crystal to improve the properties of ADP crystals.[2]
  • To form a water-soluble complex, Nb-MA which can further react with LiCl to form lithium niobate (LiNbO3) powders.[3]
  • As a monomer to synthesize a co-polymer, poly(DL-lactic acid-co-α,β-malic acid) (PLMA) with DL-lactic acid which can be coated over magnetic Fe3O4 nanoparticles after functionalizing with fluorescein isothiocyanate (FITC), to be used as a MRI T2-contrast agent.[4]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Statements

H319

Hazard Classifications

Eye Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

397.4 °F

Flash Point(C)

203 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000304359
0000304359
0000273247
0000267553
0000267553

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Biodegradable magnetic-fluorescent magnetite/poly (DL-lactic acid-co-?, ?-malic acid) composite nanoparticles for stem cell labeling
Wang L, et al.
Biomaterials, 31(13), 3502-3511 (2010)
Growth of DL-malic acid-doped ammonium dihydrogen phosphate crystal and its characterization
Rajesh P and Ramasamy P
Journal of Crystal Growth, 311(13), 3491-3497 (2009)
Chemical synthesis of lithium niobate powders (LiNbO3) prepared from water-soluble DL-malic acid complexes
Camargo ER and Kakihana M
Chemistry of Materials, 13(5), 1905-1909 (2001)
S Kodama et al.
Electrophoresis, 22(15), 3286-3290 (2001-10-09)
Chiral resolution of native DL-malic acid was achieved by ligand-exchange capillary electrophoresis using copper(II)-L-tartrate as a chiral selector. Factors affecting chiral resolution, migration time, and peak area of malic acid were studied. The running conditions for optimum separation of malic
G Anneroth et al.
Scandinavian journal of dental research, 88(3), 214-218 (1980-06-01)
Two saliva stimulating drugs, solutions of Hybrin and malic acid were in an in vitro study found to have a heavy demineralizing effect on the root surface of the dental hard tissue. Consequently the drugs cannot be recommended to patients
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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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