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
A92902
L-Ascorbic acid
99%
Synonym(s):
L-Threoascorbic acid, Antiscorbutic factor, Vitamin C
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CZK 675.00
CZK 1,190.00
CZK 3,870.00
CZK 12,600.00
About This Item
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Product Name
L-Ascorbic acid, 99%
InChI key
CIWBSHSKHKDKBQ-JLAZNSOCSA-N
InChI
1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1
SMILES string
OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O
biological source
synthetic
assay
99%
form
powder
optical activity
[α]25/D 19.0 to 23.0°, c = 10% in H2O
color
white to off-white
pH
1.0-2.5 (25 °C, 176 g/L in water)
mp
190-194 °C (dec.)
solubility
water: soluble 176 g/L at 20 °C
Quality Level
Gene Information
human ... SLC23A2(9962)
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This Item | 95210 | 255564 | 95212 |
|---|---|---|---|
| assay 99% | assay ≥99.0% (RT) | assay ≥99% | assay 99.0-100.5% |
| biological source synthetic | biological source synthetic (Organic) | biological source - | biological source synthetic |
| form powder | form powder or crystals (possibly with chunks) | form crystals or granules, powder or chunks | form solid |
| solubility water: soluble 176 g/L at 20 °C | solubility H2O: 50 mg/mL at 20 °C, clear, almost colorless | solubility water: soluble 176 g/L at 20 °C | solubility water: soluble 176 g/L at 20 °C |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| mp 190-194 °C (dec.) | mp 190-194 °C (dec.) | mp 190-194 °C (dec.) | mp 190-194 °C (dec.) |
Application
Biochem/physiol Actions
General description
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Protocols
Kultivační protokoly krok za krokem pro kultivaci nervových kmenových buněk včetně izolace, expanze, diferenciace a charakterizace NSC.
Step-by-step culture protocols for neural stem cell culture including NSC isolation, expansion, differentiation and characterization.
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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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What is the validity period of this reagent?
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This product is not assigned an expiration date or recommended retest date. Customers should routinely inspect products with no expiration date or recommended retest date to ensure they perform as expected. These products are also subject to a one-year warranty from the date of shipment.
For more information, you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.
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