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1.00244

Ácido cítrico monohydrate

for analysis EMSURE® ACS,ISO,Reag. Ph Eur

Sinónimos:

Ácido 2-hidroxipropano-1,2,3-tricarboxílico, ácido hidroxitricarbalílico

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Fórmula lineal:
HOC(COOH)(CH2COOH)2 · H2O
Número CAS:
Peso molecular:
210.14
UNSPSC Code:
12352106
NACRES:
NA.21
EC Index Number:
201-069-1
MDL number:
Beilstein/REAXYS Number:
4018641
Assay:
99.5-100.5% anhydrous basis (acidimetric)
Grade:
ACS reagent
Form:
solid
Solubility:
880 g/L
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grade

ACS reagent

Quality Level

agency

reag. ISO, reag. Ph. Eur.

vapor pressure

<1 Pa ( 25 °C)

product line

EMSURE®

assay

99.5-100.5% anhydrous basis (acidimetric)

form

solid

potency

3000 mg/kg LD50, oral (Rat)

composition

Water, 7.5-8.8% Karl Fischer

impurities

≤200 ppm Sulfated ash, ≤50 ppm In water insoluble matter

color

clear, white to almost white

pH

1.85 (25 °C, 50 g/L in H2O)

pKa 

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

mp

135-152 °C

transition temp

flash point 173.9 °C

solubility

880 g/L

density

1.54 g/cm3 at 20 °C

bulk density

800‑1000 kg/m3

anion traces

chloride (Cl-): ≤5 ppm, oxalate (as oxalic acid): ≤50 ppm, phosphate (PO43-): ≤10 ppm, sulfate (SO42-): ≤20 ppm

cation traces

Al: ≤0.2 ppm, As: ≤1 ppm, Cu: ≤5 ppm, Fe: ≤3 ppm, Hg: ≤1 ppm, Pb: ≤0.5 ppm, heavy metals (as Pb): ≤5 ppm

storage temp.

2-30°C

SMILES string

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

InChI key

YASYEJJMZJALEJ-UHFFFAOYSA-N

Application


  • Mezclas biopolímeras de almidón termoplástico y polilactida como materiales de embalaje sostenibles: se utiliza ácido cítrico monohidratado en la síntesis de polímeros biodegradables, destacando su utilidad en el desarrollo de materiales sostenibles dentro de los sectores de fabricación industrial y medioambiental (Jozinović A et al., 2024).

Analysis Note

Valoración (acidimétrica, calculado como sustancia anhidra): 99,5 - 100,5 %
Identidad (espectro IR): pasa la prueba
Aspecto: cristales blancos a casi blancos o incoloros
Aspecto de la disolución (200 g/l; agua): transparente (≤ 3 NTU) y de color no más intenso que la disolución de referencia Y₇, BY₇ o Gy₇
Materia insoluble en agua: ≤ 50 ppm
Cloruros (Cl): ≤ 5 ppm
Fosfatos (PO₄): ≤ 10 ppm
Sulfatos (SO₄): ≤ 20 ppm
Metales pesados (como Pb): ≤ 5 ppm
Al (Aluminio): ≤ 0,2 ppm
As(Arsénico): ≤ 1 ppm
Hg (Mercurio): ≤ 1 ppm
Cu (Cobre): ≤ 5 ppm
Fe (Hierro): ≤ 3 ppm
Fe (Hierro, según React. Ph  Eur.): adecuado para utilizarse en el ensayo límite para el hierro
Pb (Plomo): ≤ 0,5 ppm
Oxalatos (como C₂H₂O₄): ≤ 50 ppm
Sustancia fácilmente carbonizable: pasa la prueba
Cenizas sulfatadas: ≤ 200 ppm
Agua (según Karl Fischer): 7,5 - 8,8 %
Se ajusta a ACS, ISO 6353/ 2, React. Ph. Eur.

Other Notes

Sustituye a: CX1725-1; CX1725-3; CX1725

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

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Este artículo
1.93011PHR2903C2219000
form

solid

form

-

form

-

form

-

solubility

880 g/L

solubility

-

solubility

-

solubility

-

assay

99.5-100.5% anhydrous basis (acidimetric)

assay

-

assay

-

assay

-

Quality Level

300

Quality Level

200

Quality Level

300

Quality Level

-

grade

ACS reagent

grade

ACS reagent

grade

certified reference material, pharmaceutical secondary standard

grade

pharmaceutical primary standard

mp

135-152 °C

mp

-

mp

-

mp

-


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pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Clase de almacenamiento

11 - Combustible Solids

flash_point_f

345.0 °F - closed cup

flash_point_c

173.9 °C - closed cup



Certificados de análisis (COA)

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Número de artículo de comercio global

SKUGTIN
100244500004022536003443
100244901204027269677732
100244100004022536003429
100244902604022536646008
100244050004022536003405

Questions

1–2 of 2 Questions  
  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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