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27102

Sigma-Aldrich

Ácido cítrico

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

Sinônimo(s):

2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate

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About This Item

Fórmula linear:
HOC(COOH)(CH2COOH)2 · H2O
Número CAS:
5949-29-1
Peso molecular:
210.14
Beilstein:
4018641
Número CE:
201-069-1
Número MDL:
MFCD00149972
Código UNSPSC:
12352100
ID de substância PubChem:
57648219
NACRES:
NA.21

grau

puriss.

Nível de qualidade

200

Ensaio

99.5-100.5% (based on anhydrous substance)

Formulário

grit

qualidade

meets analytical specification of Ph. Eur., BP, USP, E330

Impurezas

residual solvents, complies
≤0.0005% heavy metals (as Pb)
7.5-8.8% water (Karl Fischer)

resíduo de ignição

≤0.05% (as SO4)

pKa 

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

traços de ânion

chloride (Cl-): ≤50 mg/kg
oxalate (as oxalic acid): ≤100 mg/kg
sulfate (SO42-): ≤100 mg/kg

traços de cátion

As: ≤1 mg/kg
Ca: ≤200 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤10 mg/kg

adequação

complies for appearance of solution
complies for identity (IR)
complies for reaction against H2SO4

grupo funcional

carboxylic acid

cadeia de caracteres SMILES

OC(CC(O)(C(O)=O)CC(O)=O)=O.O

InChI

1S/C6H8O7.H2O/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);1H2

chave InChI

YASYEJJMZJALEJ-UHFFFAOYSA-N

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Descrição geral

Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061 ± 123)Jmol-1

Aplicação

Citric acid monohydrate may be used in the diltiazem hydrochloride (drug) and melt extruded Eudragit RS PO (polymer) formulations. It improves the solubility of drug in the polymer matrix. It may be used to prepare citrate buffer for use in the intravital microscopic studies of adhesion and aggregation of platelets.

Pictogramas

Exclamation mark
GHS07

Palavra indicadora

Warning

Frases de perigo

H319,H335

Classificações de perigo

Eye Irrit. 2 - STOT SE 3

Órgãos-alvo

Respiratory system

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

345.0 °F - closed cup

Ponto de fulgor (°C)

173.9 °C - closed cup

Equipamento de proteção individual

dust mask type N95 (US), Eyeshields, Gloves

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Certificados de análise (COA)

Lot/Batch Number
BCCK3277
BCCH5300
BCCG2090
BCCD2310
BCBT5913

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Ácido cítrico

Sandra U Schilling et al.
International journal of pharmaceutics, 361(1-2), 158-168 (2008-06-28)
Incomplete drug release and particle size-dependent dissolution performance can compromise the quality of controlled release matrix systems. The objective of the current study was to investigate the ability of citric acid monohydrate (CA MH) to enhance the release of diltiazem
S Massberg et al.
The Journal of experimental medicine, 189(8), 1255-1264 (1999-04-20)
Atherosclerotic vascular lesions are considered to be a major cause of ischemic diseases, including myocardial infarction and stroke. Platelet adhesion and aggregation during ischemia-reperfusion are thought to be the initial steps leading to remodeling and reocclusion of the postischemic vasculature.
Enthalpy of solution of oxalic, succinic, adipic, maleic, malic, tartaric, and citric acids, oxalic acid dihydrate, and citric acid monohydrate in water at 298.15K.
Apelblat A.
The Journal of Chemical Thermodynamics, 18(4), 351-357 (1986)
Carolina Ganss et al.
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For preventing erosive wear in dentine, coating with adhesives has been suggested as an alternative to fluoridation. However, clinical studies have revealed limited efficacy. As there is first evidence that Sn(2+) increases bond strength of the adhesive Clearfil SE (Kuraray)
T Ulens et al.
Journal of animal science, 93(2), 627-636 (2014-12-31)
This study evaluated the effect of feed form and grinding intensity of the pig diet and the interaction between both on the particulate matter (PM) concentrations inside a pig nursery and the growth performances of weanling pigs. Four diets were
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