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
255564
L-Ascorbic acid
ACS reagent grade, ≥99%, powder or chunks, crystals or granules, HPLC
Synonym(s):
L-Threoascorbic acid, Antiscorbutic factor, Vitamin C
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| Size/SKU | Availability | Price |
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About This Item
Product Name
L-Ascorbic acid, ACS reagent, ≥99%
grade
ACS reagent
Quality Segment
assay
≥99%
form
crystals or granules, powder or chunks
optical activity
[α]25/D +20.5 to +21.5° in H2O
technique(s)
HPLC: suitable
ign. residue
<0.1%
color
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
cation traces
Fe: ≤0.001%, heavy metals: ≤0.002% (by ICP-OES)
functional group
ester, hydroxyl, ketone
SMILES string
OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O
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
InChI key
CIWBSHSKHKDKBQ-JLAZNSOCSA-N
Gene Information
human ... SLC23A2(9962)
General description
Application
Other Notes
Legal Information
1 of 1
This Item | |||
|---|---|---|---|
| technique(s) HPLC: suitable | technique(s) IR spectroscopy: suitable | technique(s) - | technique(s) cell culture | mammalian: suitable |
| grade ACS reagent | grade ACS reagent, puriss. p.a. | grade ACS reagent, anhydrous | grade - |
| assay ≥99% | assay 99.7-100.5% (oxidimetric) | assay ≥99% | assay ≥99.0% |
| form crystals or granules, powder or chunks | form solid | form crystals or granules, powder or chunks | form crystalline |
| solubility water: soluble 176 g/L at 20 °C | solubility water: soluble 176 g/L at 20 °C | solubility water: soluble 176 g/L at 20 °C | solubility H2O: 0.5 M, clear, colorless |
| color white | color - | color white | color white to off-white |
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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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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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