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
1.00495
Oxalic acid dihydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonyme(s) :
Oxalic acid dihydrate, Ethanedioic acid
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About This Item
Produits recommandés
Qualité
ACS reagent
Niveau de qualité
Agence
reag. ISO
reag. Ph. Eur.
Pression de vapeur
0.000312 hPa ( 25 °C)
Gamme de produits
EMSURE®
Essai
99.5-102.0% (manganometric)
Forme
solid
Puissance
375 mg/kg LD50, oral (Rat)
Impuretés
≤50 ppm Insoluble matter
Résidus de calcination
≤100 ppm (as sulfate)
pH
1.5 (10 g/L in H2O)
pb
149-160 °C/1013 hPa (decomposition)
Pf
98-100 °C
Température de transition
flash point 157 °C (decomposition)
Solubilité
>100 g/L
Densité
1.65 g/cm3 at 20 °C
Masse volumique apparente
813 kg/m3
Traces d'anions
chloride (Cl-): ≤5 ppm
sulfate (SO42-): ≤50 ppm
Traces de cations
Ca: ≤10 ppm
Fe: ≤2 ppm
N: ≤10 ppm
heavy metals: ≤5 ppm
heavy metals (as Pb): ≤5 ppm
Température de stockage
2-30°C
Chaîne SMILES
[O+H3].[O+H3].[O-]C(=O)C(=O)[O-]
InChI
1S/C2H2O4.2H2O/c3-1(4)2(5)6;;/h(H,3,4)(H,5,6);2*1H2
Clé InChI
GEVPUGOOGXGPIO-UHFFFAOYSA-N
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Catégories apparentées
Application
- In Situ Investigation of a Self-Accelerated Cocrystal Formation by Grinding Pyrazinamide with Oxalic Acid.: This study investigates the in situ cocrystal formation of pyrazinamide and oxalic acid dihydrate, emphasizing the self-accelerating nature of the process and its implications for pharmaceutical development (Kulla et al., 2016).
- Deuterium MAS NMR studies of dynamics on multiple timescales: histidine and oxalic acid.: This article examines the dynamics of oxalic acid dihydrate and histidine using deuterium magnetic angle spinning nuclear magnetic resonance, providing insights into molecular motions on various timescales (Chan-Huot et al., 2015).
Remarque sur l'analyse
Insoluble matter: ≤ 50 ppm
Chloride (Cl): ≤ 5 ppm
Sulfate (SO₄): ≤ 50 ppm
Total nitrogen (N): ≤ 10 ppm
Heavy metals (as Pb): ≤ 5 ppm
Heavy metals (ACS): ≤ 5 ppm
Ca (Calcium): ≤ 10 ppm
Fe (Iron): ≤ 2 ppm
Readily carbonisable substance: passes test
Residue on ignition (as sulfate): ≤ 100 ppm
Corresponds to ACS,ISO,Reag. Ph Eur
Informations légales
Mention d'avertissement
Danger
Mentions de danger
Classification des risques
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 1
Certificats d'analyse (COA)
Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".
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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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