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
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| Tamaño de envase | SKU | Disponibilidad | Precio |
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Acerca de este artículo
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
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
Legal Information
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Este artículo | |||
|---|---|---|---|
| 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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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)
Busque Certificados de análisis (COA) introduciendo el número de lote del producto. Los números de lote se encuentran en la etiqueta del producto después de las palabras «Lot» o «Batch»
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Número de artículo de comercio global
| SKU | GTIN |
|---|---|
| 1002445000 | 04022536003443 |
| 1002449012 | 04027269677732 |
| 1002441000 | 04022536003429 |
| 1002449026 | 04022536646008 |
| 1002440500 | 04022536003405 |
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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