Todas as fotos(3)

27109

Sigma-Aldrich

Citric acid

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

Fórmula linear:
HOC(COOH)(CH2COOH)2
Número CAS:
Peso molecular:
192.12
Beilstein:
782061
Número EC:
Número MDL:
eCl@ss:
39021801
ID de substância PubChem:
NACRES:
NA.21

Nível de qualidade

200

teor

99.5-100.5% (based on anhydrous substance)

forma

grit

qualidade

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

Lim. expl.

8 %, 65 °F

Impurezas

residual solvents, complies
≤0.0005% heavy metals (as Pb)
≤0.5% water (Karl Fischer)

resíduo de ignição

≤0.05% (as SO4)

pKa 

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

pf

153-159 °C (lit.)

solubilidade

water: 383 g/L at 25 °C

traços de ânion

chloride (Cl-): ≤50 ppm
oxalate (as oxalic acid): ≤100 ppm
sulfate (SO42-): ≤100 ppm

traços de cátion

As: ≤1 ppm
Ca: ≤200 ppm
Cu: ≤10 ppm
Fe: ≤10 ppm
Hg: ≤1 ppm
Pb: ≤0.5 ppm
Zn: ≤10 ppm

adequação

complies for appearance of solution
complies for reaction against H2SO4

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

Gene Information

human ... SRC(6714)

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Aplicação

Citric acid was used as a test reagent for studying whether the novel pyridazinylpiperazine analog TPRV-1 inhibitor can reduce cough reflex induced by citric acid and capsaicin in guinea pig.

Embalagem

1, 6×1 kg in poly bottle

Ações bioquímicas/fisiológicas

Citric acid in dietary form can augments absorption of aluminium in antacids. It also facilitates the phytoremediation of heavy metal contaminated soil and can transform cadmium into more transportable forms.

Certificado de análise

Certificado de origem

P Slanina et al.
Clinical chemistry, 32(3), 539-541 (1986-03-01)
Ten healthy men ingested, twice daily between meals, during each of the seven-day experimental periods: (a) citric acid (as lemon juice), (b) Al(OH)3, or (c) Al(OH)3 + citric acid. Whole blood sampled after each dietary period was analyzed electrothermally after
Sum Yee Leung et al.
Cough (London, England), 3, 10-10 (2007-12-25)
Cough reflex can be induced by the pepper extract capsaicin and by low pH in guinea-pig airways. Transient receptor potential vanniloid-1 (TPRV-1) is expressed in the sensory and afferent nerve fibres in airways. We hypothesized that a novel pyridazinylpiperazine analog
Y X Chen et al.
Chemosphere, 50(6), 807-811 (2003-04-12)
Adsorption and hydroponics experiments were conducted to study the role of citric acid on the phytoremediation of heavy metal contaminated soil. The results show that addition of citric acid decreased the adsorption of both lead and cadmium, such an effect
Maria José Garcia-Fernandez et al.
Biofouling, 29(3), 261-271 (2013-02-27)
Prevention and management of wound infections receive a lot of attention, since the presence of micro-organisms interferes with the wound-healing process. The aim of this work was to use cyclodextrins (CDs) to endow hydrogels and gauzes with the ability to
Benjamin Nota et al.
American journal of human genetics, 92(4), 627-631 (2013-04-09)
The Krebs cycle is of fundamental importance for the generation of the energetic and molecular needs of both prokaryotic and eukaryotic cells. Both enantiomers of metabolite 2-hydroxyglutarate are directly linked to this pivotal biochemical pathway and are found elevated not

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