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Key Documents

Altri documenti

27606

Sigma-Aldrich

DL-Malic acid

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

Sinonimo/i:

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

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About This Item

Formula condensata:
HO2CCH2CH(OH)CO2H
Numero CAS:
6915-15-7
Peso molecolare:
134.09
Beilstein:
1723539
Numero CE:
230-022-8
Numero MDL:
MFCD00064212
Codice UNSPSC:
12352106
ID PubChem:
57648231
NACRES:
NA.25

Densità del vapore

4.6 (vs air)

Livello qualitativo

200

Tensione di vapore

<0.1 mmHg ( 20 °C)

Saggio

99-100.5% (alkalimetric)

Forma fisica

solid

Attività ottica

[α]/D −0.10 to +0.10°

Temp. autoaccensione

644 °F

Qualità

meets analytical specification of FCC, E296

tecniche

IR spectroscopy: suitable

Impurezze

≤0.05% maleic acid
≤0.1% water insoluble matter
≤1% fumaric acid

Residuo alla calcinazione

≤0.1% (as SO4)

Punto di fusione

129-133 °C
131-133 °C (lit.)

Solubilità

acetone: soluble 17.75 g/ 100 gm at 20 °C
diethyl ether: soluble 0.84 g/100 gm at 20 °C
dioxane: soluble 22.70 g/100 gm at 20 °C
ethanol: soluble 45.53 g/100 gm at 20 °C
methanol: soluble 82.70 g/100 g at 20 °C
water: soluble 55.8 g/100 gm at 20 °C
benzene: insoluble

Cationi in tracce

As: ≤3 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg

Compatibilità

complies for identity (IR)

applicazioni

pharmaceutical (small molecule)

Stringa SMILE

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)
BJEPYKJPYRNKOW-UHFFFAOYSA-N

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Applicazioni

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

Azioni biochim/fisiol

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.

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H319

Classi di pericolo

Eye Irrit. 2

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

397.4 °F

Punto d’infiammabilità (°C)

203 °C

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

Certificati d'analisi (COA)

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S Z Salleh-Mack et al.
Ultrasonics sonochemistry, 14(3), 323-329 (2006-09-13)
The objectives of this research were to study the effects of temperature, sugar concentration (8, 12, and 16 g/100ml), organic acids (citric and malic acids) and pH (2.5 and 4.0) on ultrasound pasteurization. The model organism used for the research
L-Malic acid production by polyacrylamide gel entrapped Pichia membranaefaciens.
Biotechnology Letters, 7, 329-334 (1985)
Danilo C Centeno et al.
The Plant cell, 23(1), 162-184 (2011-01-18)
Despite the fact that the organic acid content of a fruit is regarded as one of its most commercially important quality traits when assessed by the consumer, relatively little is known concerning the physiological importance of organic acid metabolism for
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
Cuiyue Liang et al.
Plant physiology, 161(3), 1347-1361 (2013-01-24)
Low pH, aluminum (Al) toxicity, and low phosphorus (P) often coexist and are heterogeneously distributed in acid soils. To date, the underlying mechanisms of crop adaptation to these multiple factors on acid soils remain poorly understood. In this study, we
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