C0759

Sigma-Aldrich

Citric acid

99%

Linear Formula:
HOC(COOH)(CH2COOH)2
CAS Number:
Molecular Weight:
192.12
Beilstein/REAXYS Number:
782061
EC Number:
MDL number:
eCl@ss:
39021801
PubChem Substance ID:
NACRES:
NA.21

Quality Level

assay

99%

expl. lim.

8 %, 65 °F

pKa (25 °C)

(1) 3.13, (2) 4.76, (3) 6.40

pKa 

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

mp

153-159 °C (lit.)

solubility

water: soluble 383 g/L at 25 °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 an organic acid widely used in food and pharmaceutical industry. On an industrial scale, it is generally produced by submerged fermentation of molasses using the fungus Aspergillus niger. Potentiometric determination of citric acid in refined glyceride oils and fats has been investigated. A method to remove calcium from tissues without changing its antigenic properties using citric acid has been reported.

Packaging

1 kg in poly bottle
100, 500 g in poly bottle
5 kg in poly drum

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

hazcat

Eye Irrit. 2

storage_class_code

11 - Combustible Solids

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Factors affecting the successful cryopreservation of honey bee (Apis mellifera) spermatozoa.
Hopkins BK and Herr C.
Apidologie, 41(5), 548-556 (2010)
Determination of citric acid in fats.
Ohlson R, et al.
Journal of the American Oil Chemists' Society, 45(6), 475-476 (1968)
Wheat straw hemicellulose films as affected by citric acid.
Azeredo HMC, et al.
Food Hydrocolloids, 50 (2015)
Trisha Pasricha et al.
Endoscopy, 46(7), 614-618 (2014-05-23)
Capsule endoscopy is an attractive alternative to colorectal cancer screening by conventional colonoscopy, but is currently limited by compromised mucosal visibility because of the lack of safe, controlled colonic insufflation. We have therefore developed a novel system of untethered, wireless-controlled...
Assay of Ornithine Decarboxylase and Spermidine/Spermine N1-acetyltransferase Activities.
Hyvonen MT, et al.
Bio-protocol, 4(22) (2014)
Articles
Citrate is one of many cell culture components that affects the performance of serum-free, protein-free and animal protein-free cell culture systems used for biomanufacturing heterologous proteins such as monoclonal antibodies.
Read More
Protocols
To standardize a procedure for the determination of the enzymatic assay of choloylglycine hydrolase.
Read More

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