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27606

Sigma-Aldrich

DL-苹果酸

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

别名:

(±)-2-羟基琥珀酸, DL-羟基丁二酸

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About This Item

线性分子式:
HO2CCH2CH(OH)CO2H
CAS号:
6915-15-7
分子量:
134.09
Beilstein:
1723539
EC號碼:
230-022-8
MDL號碼:
MFCD00064212
分類程式碼代碼:
12352106
PubChem物質ID:
57648231
NACRES:
NA.25

蒸汽密度

4.6 (vs air)

蒸汽壓力

<0.1 mmHg ( 20 °C)

化驗

99-100.5% (alkalimetric)

形狀

solid

光學活性

[α]/D −0.10 to +0.10°

自燃溫度

644 °F

品質

meets analytical specification of FCC, E296

技術

IR spectroscopy: suitable

雜質

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

燃燒殘留物

≤0.1% (as SO4)

mp

129-133 °C
131-133 °C (lit.)

溶解度

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

正離子痕跡

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

適合性

complies for identity (IR)

應用

pharmaceutical (small molecule)

SMILES 字串

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 密鑰

BJEPYKJPYRNKOW-UHFFFAOYSA-N

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應用

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

生化／生理作用

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.

象形圖

Exclamation mark
GHS07

訊號詞

Warning

危險聲明

H319

危險分類

Eye Irrit. 2

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 1

閃點（°F）

397.4 °F

閃點（°C）

203 °C

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves

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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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