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
310697
Cellulose
microcrystalline, powder, 20 μm
Synonym(s):
Cellulose powder, Cotton linters
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€ 41,80
€ 72,20
€ 125,00
About This Item
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form
microcrystalline
powder
particle size
20 μm
pH
5-7 (11 wt. %)
bulk density
0.5 g/mL (25°C)
SMILES string
O1[C@H](C(C(C(C1CO)O)O)O)O[C@@H]2C(OC(C(C2O)O)O)CO
InChI
1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3?,4?,5?,6?,7?,8?,9?,10-,11?,12+/m1/s1
InChI key
GUBGYTABKSRVRQ-WFVLMXAXSA-N
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This Item | 435236 | 22183 | 09906 |
|---|---|---|---|
| Quality Level 100 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| form microcrystalline, powder | form microcrystalline, powder | form powder | form microcrystalline |
| particle size 20 μm | particle size 51 μm | particle size 10-100 μm | particle size - |
| pH 5-7 (11 wt. %) | pH 5-7 (11 wt. %) | pH - | pH - |
| bulk density 0.5 g/mL (25°C) | bulk density 0.6 g/mL (25°C) | bulk density - | bulk density - |
Application
Features and Benefits
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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How can I determine the shelf life / expiration / retest date of this product?
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When I checked the SDS, the cellulose content was less than 100%. What is the exact purity of the cellulose?
1 answer-
The purity of this product has not been determined. However, as this material is prepared from wood, residual elements remaining from the manufacturing process may be present. In addition, the maximum allowable moisture content is 5.0% and is reported on the lot specific Certificate of Analysis.
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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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Does the particle size refer to the length or diameter? Are these particles predominantly spherical or cylindrical?
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The particle size and morphology are not determined for this product. Semi-spherical particles may be assumed. Historical information indicates particles are <50 μm with an average size of 20 μm. The morphology may be confirmed by the end user via microscopy.
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