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27606

DL-苹果酸

Name: <SC>DL</SC>-苹果酸
Brand: SIGMA

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

Assay:

99-100.5% (alkalimetric)

Form:

solid

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属性

vapor density

4.6 (vs air)

Quality Level

200

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)

SMILES string

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 key

BJEPYKJPYRNKOW-UHFFFAOYSA-N

说明

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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pictograms

GHS07

signalword

Warning

hcodes

H319

pcodes

P264 - P280 - P305 + P351 + P338 - P337 + P313

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

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Ultrasound pasteurization: the effects of temperature, soluble solids, organic acids and pH on the inactivation of Escherichia coli ATCC 25922.

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)

Malate plays a crucial role in starch metabolism, ripening, and soluble solid content of tomato fruit and affects postharvest softening.

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

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全球贸易项目编号

货号	GTIN
27606-1KG	04061826185438
27606-25KG	04061833440292