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C0759

Sigma-Aldrich

Acido citrico

99%

Sinonimo/i:

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

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About This Item

Formula condensata:
HOC(COOH)(CH2COOH)2
Numero CAS:
77-92-9
Peso molecolare:
192.12
Beilstein:
782061
Numero CE:
201-069-1
Numero MDL:
MFCD00011669
Codice UNSPSC:
12352100
eCl@ss:
39021801
ID PubChem:
329774820
NACRES:
NA.21

Livello qualitativo

200

Saggio

99%

Forma fisica

crystals

Limite di esplosione

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

Punto di fusione

153-159 °C (lit.)

Solubilità

water: soluble 383 g/L at 25 °C

Stringa SMILE

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)
KRKNYBCHXYNGOX-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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.

Applicazioni

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.

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H319,H335

Classi di pericolo

Eye Irrit. 2 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
0000398835
0000397084
0000388122
0000388990
0000380083

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

SAFC

1.00247

Acido citrico

Acido citrico Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1071

Acido citrico

Acido citrico anhydrous powder, EMPROVE® ESSENTIAL, Ph. Eur., BP, JP, USP, FCC, E 330

SAFC

1.00241

Acido citrico

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

Sigma-Aldrich

27109

Acido citrico

Acido citrico anhydrous powder, EMPROVE® EXPERT, Ph. Eur., BP, ChP, JP, USP

SAFC

1.37002

Acido citrico

Acido citrico reagent grade, ≥98% (GC/titration)

Sigma-Aldrich

C7129

Acido citrico

Acido citrico anhydrous, European Pharmacopoeia (EP) Reference Standard

A1202000

Acido citrico

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)
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)
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
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