无水柠檬酸粉末

质量水平

200

检测方案

99.5-100.5% (based on anhydrous substance)

形式

grit

质量

anhydrous
meets analytical specification of Ph. Eur., BP, USP, E330

expl. lim.

8 %, 65 °F

杂质

residual solvents, complies
≤0.0005% heavy metals (as Pb)
≤0.5% water (Karl Fischer)

灼烧残渣

≤0.05% (as SO₄)

pKa 

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

mp

153-159 °C (lit.)

溶解性

water: 383 g/L at 25 °C

痕量阴离子

chloride (Cl^-): ≤50 ppm
oxalate (as oxalic acid): ≤100 ppm
sulfate (SO₄^2-): ≤100 ppm

痕量阳离子

As: ≤1 ppm
Ca: ≤200 ppm
Cu: ≤10 ppm
Fe: ≤10 ppm
Hg: ≤1 ppm
Pb: ≤0.5 ppm
Zn: ≤10 ppm

适用性

complies for appearance of solution
complies for reaction against H₂SO₄

SMILES string

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

Gene Information

human ... SRC(6714)