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27606 Sigma

DL-Malic acid

meets analytical specification of FCC, E296, 99-100.5% (alkalimetric)

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

  • CAS Number 6915-15-7

  • Linear Formula HO2CCH2CH(OH)CO2H

  • Molecular Weight 134.09

  •  Beilstein Registry Number 1723539

  •  EC Number 230-022-8

  •  MDL number MFCD00064212

  •  PubChem Substance ID 24856486

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Properties

Related Categories Analytical/Chromatography, Pharmacopoeia, Pharmacopoeia A-Z More...
vapor density   4.6 (vs air)
vapor pressure   <0.1 mmHg ( 20 °C)
InChI Key   BJEPYKJPYRNKOW-UHFFFAOYSA-N
assay   99-100.5% (alkalimetric)
optical activity   [α]/D −0.10 to +0.10°
autoignition temp.   644 °F
quality   meets analytical specification of FCC, E296
impurities   ≤0.05% maleic acid
  ≤0.1% water insoluble matter
  ≤1% fumaric acid
ign. residue   ≤0.1% (as SO4)
mp   129-133 °C
  131-133 °C(lit.)
solubility   acetone: soluble17.75 g/ 100 gm at 20 °C
  diethyl ether: soluble0.84 g/100 gm at 20 °C
  dioxane: soluble22.70 g/100 gm at 20 °C
  ethanol: soluble45.53 g/100 gm at 20 °C
  methanol: soluble82.70 g/100 g at 20 °C
  water: soluble55.8 g/100 gm at 20 °C
  benzene: insoluble
cation traces   As: ≤3 mg/kg
  Hg: ≤1 mg/kg
  Pb: ≤2 mg/kg
suitability   complies for identity (IR)

Description

Application

DL-Malic acid is an organic acid used for studying the impact on ultrasound pasteurization. It has also been used to culture Pichia membraneafaciens.

Biochem/physiol Actions

Malic acid is a dicarboxylic acid and an important regulatory metabolite. It has been implicated in process of fruit ripening. Malic acid is important for the starch metabolism; low malic acid content results in transient accumulation of starch. Mitochondrial-malate metabolism modulates ADP-glucose pyrophosphorylase activity and redox status of plastids.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
3
RTECS 
ON7175000
Protocols & Articles
Peer-Reviewed Papers
15

References

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