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Merck

194131

Sigma-Aldrich

Oxalic acid

98%

Sinónimos:

Ethanedioic acid

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About This Item

Fórmula lineal:
HO2CCO2H
Número de CAS:
Peso molecular:
90.03
Beilstein:
385686
Número CE:
Número MDL:
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
NACRES:
NA.22
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densidad de vapor

4.4 (vs air)

Nivel de calidad

presión de vapor

<0.01 mmHg ( 20 °C)

Ensayo

98%

Formulario

powder or crystals

pH

(1.3 at 9 g/l)

mp

189.5 °C (dec.) (lit.)

solubilidad

water: soluble 108 g/L at 25 °C

densidad

1.65 g/cm3 at 18.5 °C

grupo funcional

carboxylic acid

cadena SMILES

OC(=O)C(O)=O

InChI

1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)

Clave InChI

MUBZPKHOEPUJKR-UHFFFAOYSA-N

Información sobre el gen

human ... SRC(6714)

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Descripción general

Oxalic acid is a dicarboxylic acid used in dehydration, elimination, protection, deprotection, condensation, and decarboxylation reactions.[1]

Oxalic acid is present as a potential impurity in some active pharmaceutical ingredients[2].

Aplicación

Oxalic acid was used in determination of oxamic acid, oxalic acid, and oxamide in hydrophobic drug substance matrix by ion-exclusion chromatography[2]. It was used in the synthesis of three-dimensionally ordered macroporous metal oxides or carbonates via templating with polystyrene spheres[3]. It was employed as supporting electrolyte during electrochemical synthesis of polyaniline-polypyrrole composite coatings[4].

Pictogramas

CorrosionExclamation mark

Palabra de señalización

Danger

Frases de peligro

Clasificaciones de peligro

Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 1

Equipo de protección personal

dust mask type N95 (US), Eyeshields, Gloves


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General synthesis of periodic macroporous solids by templated salt precipitation and chemical conversion.
Yan H, et al.
Chemistry of Materials, 12(4), 1134-1141 (2000)
Oxalic Acid
Hamilton GS
eEROS (Encyclopedia of Reagents for Organic Synthesis) (2001)
Characterization of polyaniline-polypyrrole composite coatings on low carbon steel: a XPS and infrared spectroscopy study.
Rajagopalan R and Iroh JO.
Applied Surface Science, 218(1), 58-69 (2003)
L Yang et al.
Journal of pharmaceutical and biomedical analysis, 22(3), 487-493 (2000-04-15)
Oxalic acid, oxamic acid and oxamide are potential impurities in some active pharmaceutical ingredients (API). The retention and separation of oxalic and oxamic acids are particularly challenging using conventional reversed-phase HPLC due to their high polarity. An ion-exclusion chromatography (IEC)
Xianlai Zeng et al.
Journal of hazardous materials, 295, 112-118 (2015-04-22)
With the booming of consumer electronics (CE) and electric vehicle (EV), a large number of spent lithium-ion battery (LIBs) have been generated worldwide. Resource depletion and environmental concern driven from the sustainable industry of CE and EV have motivated spent

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/449/386/product-dating-information-mk.pdf

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  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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