无水柠檬酸粉末

Agency

meets USP/NF

质量水平

200

蒸汽压

<0.1 hPa ( 20 °C)

检测方案

99.5-100.5% dry basis (alkalimetric)

形式

fine powder

expl. lim.

8 %, 65 °F

杂质

≤0.005% Water-insoluble matter
≤1% Water (Karl Fischer)

sulfated ash (600 °C)

≤0.02%

颜色

white to almost white

pH值（酸碱度）

1.7 (20 °C, 100 g/L in H₂O)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

bp

200 °C/1013 hPa (decomposition)

mp

153-159 °C (lit.)

溶解性

1330 g/L

密度

1.67 g/cm³ at 20 °C

痕量阴离子

chloride (Cl^-): ≤0.001%
oxalate (C₂O₄^2-): ≤0.036%
phosphate (PO₄^3-): ≤0.001%
sulfate (SO₄^2-): ≤0.002%

痕量阳离子

Fe: ≤0.0003%
Pb: ≤0.0002%

运输

ambient

储存温度

room temp

SMILES字符串

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

InChI

1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

InChI key

KRKNYBCHXYNGOX-UHFFFAOYSA-N