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
31390
Dextran from Leuconostoc spp.
Mr ~70,000
Synonym(s):
DEXTRAN 70
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| Size/SKU | Availability | Price |
|---|
About This Item
biological source
(Leuconostoc spp)
Quality Segment
form
powder
mol wt
Mr ~70,000
loss
≤7% loss on drying
color
white
mp
483 °C ((901 °F ))
solubility
water: 0.75 g/5mL, clear
absorption
≤0.05 at 375 nm in H2O at 10%
storage temp.
room temp
SMILES string
O1C(C(C(C(C1CO)O)O)O)OCC2OC(C(C(C2O)O)O)OCC(O)C(O)C(O)C(O)C=O
InChI
1S/C18H32O16/c19-1-5(21)9(23)10(24)6(22)3-31-17-16(30)14(28)12(26)8(34-17)4-32-18-15(29)13(27)11(25)7(2-20)33-18/h1,5-18,20-30H,2-4H2
InChI key
FZWBNHMXJMCXLU-UHFFFAOYSA-N
General description
Application
- for the isolation of islets from pancreatic tissue by centrifugation
- as a component of Earle′s bicarbonate buffer for placental perfusion
- for the isolation of rat brain microvessels
Biochem/physiol Actions
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| biological source (Leuconostoc spp) | biological source (Leuconostoc spp) | biological source (Leuconostoc spp) | biological source (Leuconostoc spp) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| solubility water: 0.75 g/5mL, clear | solubility water: 1.5 g/10 mL, colorless to faintly yellow | solubility water: 1.5, clear, colorless | solubility water: 1.5 g/10 mL, clear, colorless |
| form powder | form powder | form powder | form powder |
| storage temp. room temp | storage temp. room temp | storage temp. room temp | storage temp. room temp |
| mp 483 °C ((901 °F )) | mp 483 °C ((901 °F )) | mp 483 °C ((901 °F )) | mp 483 °C ((901 °F )) |
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Storage Class
11 - Combustible Solids
ppe
Eyeshields, Gloves, type N95 (US)
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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