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Merck

C1909

Sigma-Aldrich

Citric acid monohydrate

ACS reagent, ≥99.0%

Synonim(y):

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

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About This Item

Wzór liniowy:
HOC(COOH)(CH2COOH)2 · H2O
Numer CAS:
Masa cząsteczkowa:
210.14
Beilstein:
4018641
Numer WE:
Numer MDL:
Kod UNSPSC:
12352100
Identyfikator substancji w PubChem:
NACRES:
NA.21

klasa czystości

ACS reagent

Poziom jakości

Próba

≥99.0%

Postać

powder

zanieczyszczenia

Substances carbonizable by hot sulfuric acid, passes test
≤0.005% Insoluble matter

pozostałość po prażeniu

≤0.02%

pKa 

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

rozpuszczalność

H2O: soluble 54 % (w/w) at 10 °C (Citric acid in water)
H2O: 59.2 % (w/w) at 20 °C (Citric acid in water)
H2O: 84.0 % (w/w) at 100 °C (Citric acid in water)

ślady anionów

chloride (Cl-): ≤0.001%
oxalate (C2O42-): passes test (limit about 0.05%)
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.002%

ślady kationów

Fe: ≤3 ppm
Pb: ≤2 ppm

ciąg 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

Klucz InChI

YASYEJJMZJALEJ-UHFFFAOYSA-N

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Opis ogólny

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. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. An investigation of its crystal growth kinetics indicates that growth is linearly dependent on size.

Citric acid monohydrate is an organic weak acid used as a natural preservative in food and beverage products.

Zastosowanie

Citric acid monohydrate was used in the preparation of citric acid solution employed in the acetone method of 68Ga pre-purification and radiolabeling technique.
It may be used:
  • As release-modifying agent to improve the release of diltiazem hydrochloride from melt extruded Eudragit RS PO tablets.
  • To prepare citrate buffer for use in the preparation of platelets for intravital microscopy.
  • To prepare Tris-citrate buffer employed for the electrophoresis of bacterial enzymes.

Piktogramy

Exclamation mark

Hasło ostrzegawcze

Warning

Zwroty wskazujące rodzaj zagrożenia

Klasyfikacja zagrożeń

Eye Irrit. 2 - STOT SE 3

Organy docelowe

Respiratory system

Kod klasy składowania

11 - Combustible Solids

Klasa zagrożenia wodnego (WGK)

WGK 1

Temperatura zapłonu (°F)

345.0 °F - closed cup

Temperatura zapłonu (°C)

173.9 °C - closed cup

Środki ochrony indywidualnej

dust mask type N95 (US), Eyeshields, Gloves


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Dokumenty związane z niedawno zakupionymi produktami zostały zamieszczone w Bibliotece dokumentów.

Odwiedź Bibliotekę dokumentów

Eco-friendly rice husk pre-treatment for preparing biogenic silica: Gluconic acid and citric acid comparative study
Setiawan WK and Chiang KY
Chemosphere, 179, 130541-130541 (2021)
Size dependency of citric acid monohydrate growth kinetics.
Bravi M and Mazzarotta B.
Chemical Engineering Journal, 70(3), 203-207 (1998)
Michael K Schultz et al.
Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine, 76, 46-54 (2012-10-03)
A new NaCl based method for preparation of gallium-68 labeled radiopharmaceuticals has been adapted for use with an automated gallium-68 generator system. The method was evaluated based on 56 preparations of [(68)Ga]DOTATOC and compared to a similar acetone-based approach. Advantages
Methods of multilocus enzyme electrophoresis for bacterial population genetics and systematics.
R K Selander et al.
Applied and environmental microbiology, 51(5), 873-884 (1986-05-01)
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

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