无水柠檬酸粉末

产品名称

无水柠檬酸粉末, meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)

cation traces

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

InChI key

KRKNYBCHXYNGOX-UHFFFAOYSA-N

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)

SMILES string

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

assay

99.5-100.5% (based on anhydrous substance)

form

grit

quality

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

expl. lim.

8 %, 65 °F

impurities

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

ign. residue

≤0.05% (as SO₄)

pKa 

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

mp

153-159 °C (lit.)

solubility

water: 383 g/L at 25 °C

anion traces

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

suitability

complies for appearance of solution
complies for reaction against H₂SO₄

Quality Level

200

Gene Information

human ... SRC(6714)