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
1.00468
Acide L(+)-ascorbique
for analysis EMSURE® ACS,Reag. Ph Eur
Synonyme(s) :
Acide L(+)-ascorbique
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A propos de cet article
grade
ACS reagent
Quality Segment
agency
reag. Ph. Eur.
product line
EMSURE®
assay
99.0-100.5% (iodometric)
form
crystalline powder
autoignition temp.
380 °C
potency
11900 mg/kg LD50, oral (Rat)
technique(s)
thin layer chromatography (TLC): suitable
impurities
≤0.1% Related substances (unspecified impurities singly) (HPLC), ≤0.15% Related substances (Impurity C) (HPLC), ≤0.15% Related substances (Impurity D) (HPLC), ≤0.2% Oxalic acid, ≤0.2% Related substances (sum of impurities (except impurity A and D)) (HPLC)
sulfated ash (600 °C)
≤0.05%
loss
≤0.1% loss on drying, 105 °C
color
clear
pH
2.2-2.5 (20 °C, 50 g/L in H2O)
solubility
330 g/L
density
1.65 g/cm3 at 20 °C
bulk density
500‑900 kg/m3
anion traces
chloride (Cl-): ≤50 ppm, sulfate (SO42-): ≤20 ppm
cation traces
Cu: ≤5 ppm, Fe: ≤2 ppm, heavy metals: ≤10 ppm
storage temp.
15-25°C
InChI
1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-8,10-11H,1H2
InChI key
TYQCGQRIZGCHNB-UHFFFAOYSA-N
General description
Application
- Détermination sensible dans la recherche métabolique : une étude a utilisé l'acide (±)-4-hydroxy-3-méthoxymandélique-D₃ dans une analyse par chromatographie en phase gazeuse couplée à la spectrométrie de masse avec ionisation chimique négative, fournissant une méthode sensible pour déterminer les métabolites de la tyrosine. Cette application soutient l'utilisation de composés deutérés dans les expériences de traceurs marqués par des isotopes stables pour étudier le métabolisme chez l'homme (Shimamura et al., 1986).
Analysis Note
Legal Information
1 of 1
Cet article | |||
|---|---|---|---|
| grade ACS reagent | grade pharmaceutical primary standard | grade - | grade analytical standard |
| assay 99.0-100.5% (iodometric) | assay - | assay 99.0-100.5% | assay - |
| agency reag. Ph. Eur. | agency EP Reference standard | agency tested according to Ph. Eur. | agency - |
| Quality Level 300 | Quality Level - | Quality Level 200 | Quality Level 100 |
| form crystalline powder | form solid | form solid | form solid |
| pH 2.2-2.5 (20 °C, 50 g/L in H2O) | pH - | pH 1.0-2.5 (25 °C, 176 g/L in water) | pH 1.0-2.5 (25 °C, 176 g/L in water) |
Classe de stockage
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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 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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