DL-苹果酸

蒸汽密度

4.6 (vs air)

质量水平

200

蒸汽压

<0.1 mmHg ( 20 °C)

检测方案

99-100.5% (alkalimetric)

形式

solid

旋光性

[α]/D −0.10 to +0.10°

自燃温度

644 °F

质量

meets analytical specification of FCC, E296

技术

IR spectroscopy: suitable

杂质

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

灼烧残渣

≤0.1% (as SO₄)

mp

129-133 °C
131-133 °C (lit.)

溶解性

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

痕量阳离子

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

适用性

complies for identity (IR)

应用

pharmaceutical (small molecule)

SMILES字符串

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 key

BJEPYKJPYRNKOW-UHFFFAOYSA-N