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C0759

Sigma-Aldrich

Ácido cítrico

99%

Sinónimos:

2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid

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About This Item

Fórmula lineal:
HOC(COOH)(CH2COOH)2
Número de CAS:
77-92-9
Peso molecular:
192.12
Beilstein/REAXYS Number:
782061
EC Number:
201-069-1
MDL number:
MFCD00011669
UNSPSC Code:
12352100
eCl@ss:
39021801
PubChem Substance ID:
329774820
NACRES:
NA.21

Quality Level

200

assay

99%

form

crystals

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 a natural component widely usedin many industrial applications such as chelation, buffering, pH adjustment,and derivatization. It can also be used as a reagent in condensation, acidcatalysis, cycloaddition, deprotection, and decarboxylation reactions.

Application

Citric acid can be used as a reactant to synthesize:
  • Trialkyl citrates via sulfuric acid-catalyzed esterification with aliphatic alcohols C2-C5.
  • Biodegradable thermoset polymer via catalyst-free polycondensation reaction.
It can also be used as a catalyst to synthesize amido alkyl naphthols by reacting 2-naphthols, aldehydes, and amides/ureas.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319,H335

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

ppe

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificados de análisis (COA)

Lot/Batch Number
WXBD7017V
SLCK2581
SLCJ1101
SLCJ1099
SLCH6547

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If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

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Ácido cítrico anhydrous fine-granular, EMPROVE® ESSENTIAL, Ph. Eur., BP, ChP, JP, USP, FCC, E 330

SAFC

1.00247

Ácido cítrico

Ácido cítrico anhydrous powder, EMPROVE® ESSENTIAL, Ph. Eur., BP, JP, USP, FCC, E 330

SAFC

1.00241

Ácido cítrico

Ácido cítrico meets analytical specification of Ph. Eur., BP, USP, E330, anhydrous, 99.5-100.5% (based on anhydrous substance)

Sigma-Aldrich

27109

Ácido cítrico

Ácido cítrico anhydrous powder, EMPROVE® EXPERT, Ph. Eur., BP, ChP, JP, USP

SAFC

1.37002

Ácido cítrico

Ácido cítrico anhydrous, European Pharmacopoeia (EP) Reference Standard

A1202000

Ácido cítrico

Antigen-retrieval procedure for bromodeoxyuridine immunolabeling with concurrent labeling of nuclear DNA and antigens damaged by HCl pretreatment.
Xiaobing Tang et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 27(22), 5837-5844 (2007-06-01)
Assay of Ornithine Decarboxylase and Spermidine/Spermine N1-acetyltransferase Activities.
Hyvonen MT, et al.
Bio-protocol, 4(22) (2014)
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
Factors affecting the successful cryopreservation of honey bee (Apis mellifera) spermatozoa.
Hopkins BK and Herr C.
Apidologie, 41(5), 548-556 (2010)
A method for decalcification with citric acid.
Foschini MP and Muzzi L.
Biotechnic & Histochemistry, 68(1), 42-45 (1993)
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