Citric Acid Anhydrous

EP, USP + LEC + Microbiological requirements

CAS #:


Molecular Formula:



2-Hydroxy-1,2,3-propanetricarboxylic Acid

Molecular Weight:

192.13 g/mol


Anhydrous Citric Acid, Powder, USP belongs to a class of drugs known as urinary alkalinizers that are used to treat certain metabolic problems (acidosis) caused by kidney disease.

Characters Unit Specification
Identity B (EP, BP) Acc to requirements
Identity E (EP, BP) Acc to requirements
Identity A Acc to requirements
Appearance of solution (EP, BP) Correlates to test
Color and clarity of solution (USP) Correlates to test
Carbonisable substances (EP,BP,USP) Correlates to test
Assay (EP, BP) % 99,5 - 100,5
Assay (USP) % 99,5 - 100,5
Sulphated ash (EP, BP) % <=0,10
Residue on ignition (USP) % <=0,10
Water (EP, BP, USP) % <=1,0
Heavy metals (as Pb) mg/kg <=10,0
Aluminium (EP, BP, USP) mg/kg <=0,2
Oxalic acid (EP< BP, USP) % <=0,036
Sulfates (EP, BP, USP) mg/kg <=150,0
Bacterial endotoxine IU/g <=5
TAMC 30oC (total aerobic microbial count cfu/g <=50
TYMC cfu/g <=10
Escherichia Coli cfu/g 0
Staphylococcus aureus cfu/g 0
Pseudomonas aeruginosa cfu/g 0
Salmonella cfu/10g 0

Shelf Life/Retest Date: Citric acid anhydrous CAS NO. 77-92-9 raw material can be kept for at least 3 years if stored in a cool and dry place.

Storage/Shipping Conditions:

  • Keep container tightly closed in a cool, well-ventilated place.
  • Storage temperature recommended: < 25°C

Pack Sizes: 5 Kg

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