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
C9481
Carboxyméthylcellulose sodium
meets USP testing specifications, Medium viscosity
Synonyme(s) :
Carboxyméthylcellulose sodium salt, Carboxyméthylcellulose de sodium
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| Taille/Référence | Disponibilité | Prix |
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A propos de cet article
Quality Segment
agency
USP/NF, meets USP testing specifications
assay
6.5-9.5% anhydrous basis (Sodium)
form
powder
color
light yellow
pH
(10 g/L68 °F neutral)
viscosity
400-800 cP, 2 % in H2O(25 °C)(lit.)
mp
> 300.05 °C ((> 572.09 °F ))
solubility
water: soluble
SMILES string
[Na].OC(C(O)C(O)C=O)C(O)CO.OC(=O)C
InChI
1S/C6H12O6.C2H4O2.Na/c7-1-3(9)5(11)6(12)4(10)2-8;1-2(3)4;/h1,3-6,8-12H,2H2;1H3,(H,3,4);
InChI key
DPXJVFZANSGRMM-UHFFFAOYSA-N
General description
Application
Other Notes
1 of 1
Cet article | |||
|---|---|---|---|
| description meets USP testing specifications, Medium viscosity | description certified reference material, pharmaceutical secondary standard | description United States Pharmacopeia (USP) Reference Standard | description low viscosity |
| assay 6.5-9.5% anhydrous basis (Sodium) | assay - | assay - | assay - |
| Quality Level 200 | Quality Level 300 | Quality Level - | Quality Level 200 |
| solubility water: soluble | solubility - | solubility - | solubility water: soluble |
| form powder | form solid | form - | form powder |
| color light yellow | color - | color - | color light yellow |
| mp > 300.05 °C ((> 572.09 °F )) | mp - | mp - | mp > 300.05 °C ((> 572.09 °F )) |
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Classe de stockage
11 - Combustible Solids
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
EPI (équipement de protection individuelle)
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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I need this product information about Molecular weight. 분자량 범위 정보 필요
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The molecular weight of this product is 250 kDa.
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What is the expiration/shelf life/retest date of this product? The Certificate of Analysis does not list any information about it for individual lots. Thank you!
1 answer-
This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers 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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I have a question regarding the degree of substitution of product C9481. As you know, the degree of substitution of CMC is an important characteristic. Have a wonderful day.
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The degree of substitution of this item is 0.7 (approximately 7 carboxymethyl groups per 10 anhydroglucose units).
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