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M1000

L-(−)-Malic acid

≥95% (titration)

Sinonimo/i:

(S)-(−)-2-Hydroxysuccinic acid, L-Hydroxybutanedioic acid

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A voi/SKUDisponibilitàPrezzo
100 g
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CHF 76.90
500 g
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CHF 332.00
1 kg
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CHF 522.00

Informazioni su questo articolo

Formula condensata:
HO2CCH2CH(OH)CO2H
Numero CAS:
Peso molecolare:
134.09
UNSPSC Code:
12352106
PubChem Substance ID:
NACRES:
NA.22
EC Number:
202-601-5
MDL number:
Beilstein/REAXYS Number:
1723541
Assay:
≥95% (titration)
Form:
powder

CHF 76.90


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Quality Segment

assay

≥95% (titration)

form

powder

pKa (25 °C)

(1) 3.46, (2) 5.10

mp

101-103 °C ((lit.)), 101-103 °C (lit.)

solubility

water: 100 mg/mL, clear to very slightly hazy, colorless

density

1,595  g/cm3 at 68 °F

SMILES string

O[C@@H](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)/t2-/m0/s1

InChI key

BJEPYKJPYRNKOW-REOHCLBHSA-N

General description

L-Malic acid is the naturally occurring isomer of malic acid, found mainly in sour and unripe fruits.

Application

L-(-)-Malic acid may be used to prepare:
  • diethyl (S)-malate
  • ethyl (R)-2-hydroxyl-4-phenylbutanoate
  • ethyl (S)-2-hydroxyl-4-phenylbutanoate
  • D-homophenylalanine ethyl ester hydrochloride
  • furo[3,2-i]indolizines

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Questo articolo
M6413091728.00384
L-(−)-Malic acid certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Supelco

09172

L-(−)-Malic acid

assay

≥95% (titration)

assay

≥95%

assay

-

assay

≥99% (acidimetric)

Quality Level

300

Quality Level

200

Quality Level

300

Quality Level

200

form

powder

form

powder

form

-

form

powder

solubility

water: 100 mg/mL, clear to very slightly hazy, colorless

solubility

H2O: 0.5 M at 20 °C, clear, colorless

solubility

-

solubility

160 g/L

mp

101-103 °C ((lit.)), 101-103 °C (lit.)

mp

101-103 °C (lit.)

mp

101-103 °C (lit.)

mp

98-103 °C

pKa (25 °C)

(1) 3.46, (2) 5.10

pKa (25 °C)

-

pKa (25 °C)

-

pKa (25 °C)

-


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pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2

Classe di stoccaggio

11 - Combustible Solids

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves



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Questions

1–2 of 2 Questions  
  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/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  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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