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Merck
CN

27606

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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关于此项目

线性分子式:
HO2CCH2CH(OH)CO2H
化学文摘社编号:
6915-15-7
分子量:
134.09
UNSPSC Code:
12352106
NACRES:
NA.25
PubChem Substance ID:
57648231
EC Number:
230-022-8
Beilstein/REAXYS Number:
1723539
MDL number:
MFCD00064212

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产品名称

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

InChI key

BJEPYKJPYRNKOW-UHFFFAOYSA-N

InChI

1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)

SMILES string

OC(CC(O)=O)C(O)=O

vapor density

4.6 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

assay

99-100.5% (alkalimetric)

form

solid

optical activity

[α]/D −0.10 to +0.10°

autoignition temp.

644 °F

quality

meets analytical specification of FCC, E296

technique(s)

IR spectroscopy: suitable

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: 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

cation traces

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

suitability

complies for identity (IR)

application(s)

pharmaceutical (small molecule)

Quality Level

200

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相关类别

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.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319

Hazard Classifications

Eye Irrit. 2

存储类别

11 - Combustible Solids

wgk

WGK 1

flash_point_f

397.4 °F

flash_point_c

203 °C

ppe

dust mask type N95 (US), Eyeshields, Gloves

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
BCCF7083
BCCD3025
BCCB6267
BCBZ5848
BCBS7911V

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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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