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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 57648231

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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.

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Laboratory Gloves
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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