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
1.00495
Oxalic acid dihydrate
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Sinónimos:
Oxalic acid dihydrate, Ethanedioic acid
Seleccione un Tamaño
| Tamaño de envase | SKU | Disponibilidad | Precio |
|---|
Acerca de este artículo
grade
ACS reagent
Quality Level
agency
reag. ISO, reag. Ph. Eur.
vapor pressure
0.000312 hPa ( 25 °C)
product line
EMSURE®
assay
99.5-102.0% (manganometric)
form
solid
potency
375 mg/kg LD50, oral (Rat)
impurities
≤50 ppm Insoluble matter
ign. residue
≤100 ppm (as sulfate)
pH
1.5 (10 g/L in H2O)
bp
149-160 °C/1013 hPa (decomposition)
mp
98-100 °C
transition temp
flash point 157 °C (decomposition)
solubility
>100 g/L
density
1.65 g/cm3 at 20 °C
bulk density
813 kg/m3
anion traces
chloride (Cl-): ≤5 ppm, sulfate (SO42-): ≤50 ppm
cation traces
Ca: ≤10 ppm, Fe: ≤2 ppm, N: ≤10 ppm, heavy metals: ≤5 ppm, heavy metals (as Pb): ≤5 ppm
storage temp.
2-30°C
SMILES string
[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
InChI key
GEVPUGOOGXGPIO-UHFFFAOYSA-N
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).
Analysis Note
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
Legal Information
1 of 1
Este artículo | |||
|---|---|---|---|
| grade ACS reagent | grade ACS reagent, puriss. p.a. | grade synthesis grade | grade - |
| assay 99.5-102.0% (manganometric) | assay ≥99.5% (manganometric) | assay ≥99% (manganometric) | assay ≥99.5% (calculated as dihydrate, alkalimetric) |
| agency reag. ISO, reag. Ph. Eur. | agency USP/NF, reag. ISO, reag. Ph. Eur. | agency - | agency - |
| Quality Level 300 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| form solid | form crystals | form solid | form solid |
| pH 1.5 (10 g/L in H2O) | pH - | pH 1.5 (10 g/L in H2O) | pH 1.5 (10 g/L in H2O) |
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Oral - Eye Dam. 1
Clase de almacenamiento
11 - Combustible Solids
wgk
WGK 1
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»
¿Ya tiene este producto?
Encuentre la documentación para los productos que ha comprado recientemente en la Biblioteca de documentos.
Contenido relacionado
Número de artículo de comercio global
| SKU | GTIN |
|---|---|
| 1004950500 | 04022536006901 |
| 1004951000 | 04022536006925 |
| 1004950100 | 04022536006895 |
| 1004959025 | 04022536006956 |
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
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
Helpful?
-