PHR1071
Citric acid, Anhydrous
Pharmaceutical Secondary Standard; Certified Reference Material
Synonym(s):
Citric acid
About This Item
Recommended Products
grade
certified reference material
pharmaceutical secondary standard
Quality Level
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
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General description
Citric acid is a common ingredient in pharmaceutical formulations. It finds use in antacids and dentrifices because of the effervescent effect it generates upon combination with carbonates or bicarbonates. Citric acid may also be used as a buffering agent and it assists in the dispersion of suspensions in order to ensure the stability of the active ingredients and enhance the efficacy of antioxidants.
Application
Analysis Note
Other Notes
Footnote
Recommended products
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Storage Class
11 - Combustible Solids
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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Protocols
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