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DL-苹果酸

DL-Malic acid
产品编号:3079023
规格:meets analytical specification of FCC, E296, 99-100.5% (alkalimetric)
CAS NO:6915-15-7
包装规格:1 KG,25 KG
产品类别:进口试剂
品牌:Sigma-Aldrich
优惠价:立即咨询
产品编号包装单位单价(元)国内现货国外库存询价单
30790231 KG1081
307902325 KG5360
产品别名

6915-15-7

DL-苹果酸

DL-Malic acid

DL-Hydroxybutanedioic acid

(±)-2-Hydroxysuccinic acid

(±)-2-羟基琥珀酸

DL-羟基丁二酸

结构式
基本信息
Linear Formula【线性分子式】
HO2CCH2CH(OH)CO2H
Molecular weight
134.09
Beilstein
1723539
EC number【EC 号】
230-022-8
MDL number
MFCD00064212
PubChem Substance ID【PubChem化学物质编号】
57648231
NACRES
NA.25
Quality【质量】
meets analytical specification of FCC, E296
Application【应用】
DL-Malic acid is an organic acid used for studying the impact on ultrasound pasteurization. It has also been used to culture Pichia membraneafaciens.
Biochem/physiol Actions【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.
产品性质
Quality Level【质量水平】
200
vapor density【蒸汽密度】
4.6 (vs air)
vapor pressure【蒸汽压】
<0.1 mmHg ( 20 ℃)
Assay【测定】
99-100.5% (alkalimetric)
optical activity【旋光性】
[α]/D −0.10 to +0.10°
autoignition temp.【自燃温度】
644 °F
technique(s)
IR spectroscopy: suitable
impurities【杂质】
≤0.05% maleic acid
≤0.1% water insoluble matter
≤1% fumaric acid
ign. residue【灼烧残渣】
≤0.1% (as SO4)
mp
129-133 ℃
131-133 ℃ (lit.)
solubility【溶解性】
acetone: soluble 17.75 g/ 100 gm at 20 ℃
diethyl ether: soluble 0.84 g/100 gm at 20 ℃
dioxane: soluble 22.70 g/100 gm at 20 ℃
ethanol: soluble 45.53 g/100 gm at 20 ℃
methanol: soluble 82.70 g/100 g at 20 ℃
water: soluble 55.8 g/100 gm at 20 ℃
benzene: insoluble
cation traces【痕量阳离子】
As: ≤3 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
suitability【适用性】
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
安全信息
Pictograms【象形图】
GHS07
Signal word【警示用语:】
Warning
Hazard Statements
H319
Precautionary Statements
P264 - P280 - P305 + P351 + P338 - P337 + P313
Hazard Classifications【危险分类】
Eye Irrit. 2
Storage Class Code【储存分类代码】
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)【闪点(F)】
397.4 °F
Flash Point(C)【闪点(C)】
203 ℃
Personal Protective Equipment【个人防护装备】
dust mask type N95 (US), Eyeshields, Gloves
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