柠檬酸 一水合物

等级

ACS reagent

质量水平

200

检测方案

≥99.0%

形式

powder

杂质

Substances carbonizable by hot sulfuric acid, passes test
≤0.005% Insoluble matter

灼烧残渣

≤0.02%

pKa 

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

溶解性

H2O: soluble 54 % (w/w) at 10 °C (Citric acid in water)
H2O: 59.2 % (w/w) at 20 °C (Citric acid in water)
H2O: 84.0 % (w/w) at 100 °C (Citric acid in water)

痕量阴离子

chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.05%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

痕量阳离子

Fe: ≤3 ppm
Pb: ≤2 ppm

SMILES string

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