Citric acid Anhydrous

grade

certified reference material
pharmaceutical secondary standard

Quality Level

300

Agency

traceable to Ph. Eur. A1202000
traceable to USP 1134368

API family

citric acid

CofA

current certificate can be downloaded

expl. lim.

8 % 65 °F

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

pKa 

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

mp

153-159 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-30°C

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