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C4888

Sigma-Aldrich

羧甲基纤维素 钠盐

Medium viscosity

同義詞:

羧甲基纤维素钠

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About This Item

CAS號碼:
9004-32-4
MDL號碼:
MFCD00081472
分類程式碼代碼:
12352201
NACRES:
NA.25
暫時無法取得訂價和供貨情況

生物源

wood (pulp)

品質等級

200

形狀

powder

顏色

light yellow

有用的pH值範圍

(20 °C, 10 g/L, 68 °F neutral)

黏度

400-800 cP, 2 % in H2O(25 °C)(lit.)

mp

> 300.05 °C ((> 572.09 °F))

溶解度

water: soluble

正離子痕跡

Na: 6.5-9.5%

儲存溫度

room temp

SMILES 字串

[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 密鑰

DPXJVFZANSGRMM-UHFFFAOYSA-N

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相關類別

一般說明

该产品是一种中粘度羟甲基化纤维素（CMC）；水中国2%溶液的粘稠时在25C时是400-800厘泊（cps）。粘度与浓度和温度有关。当温度上升，粘稠度下降。当浓度增大，粘稠度增加。

低，中，高粘度CMC都可用作悬浮剂。低粘度CMC通常用作“稀”水溶液。 中等粘度CMC可使溶液像糖浆一样粘稠。 高粘度CMC用于制备类似于乳膏或乳液的混合物。

應用

可使用不同粘度的可溶性羧甲基纤维素（CM-纤维素; CMC）作为粘度调节剂（增稠剂），以稳定乳液并作为油和其他碳结构（如纳米管）的化学分散剂。CMC用于开发生物结构产品，如生物膜、乳液和纳米颗粒药物递送系统。 羟甲基化纤维素，中粘度，可以用来使溶液有糖浆的稠度。[1][2]

準備報告

该产品在水中可溶（20mg/ml）
将羟甲基化纤维素溶解的关键是仔细地将固体加入水中，这样使它能够分散均匀（充分湿润）。可能需要将固体分批添加至水中。 将水添加至干燥固体中会产生难以溶解的固体“团块”；因此必须将固体添加至水中。轻轻搅拌或间歇摇动；请勿使用磁力搅拌棒不断搅拌。无需高温，高温实际上可能减慢溶解过程。混合装置，如产生涡旋的叶轮型搅拌器，可将粉末卷入液体中，但是它可能会对粉末产生一些剪切作用。

其他說明

为了全面了解我们针对客户研究提供的各种多糖产品，建议您访问我们的碳水化合物分类页面。

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 1

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)

從最近期的版本中選擇一個：

分析證明 (COA)

Lot/Batch Number
0000435385
0000435385
0000414414
0000414414
0000405108

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Alexandra D Torres et al.
Virology, 541, 1-12 (2019-12-13)
The papillomavirus E5 gene contributes to transformation and tumorigenesis; however, its exact function in these processes and viral pathogenesis is unclear. While E5 is present in high-risk mucosotropic HPVs that cause anogenital and head and neck cancers, it is absent
Megan E Spurgeon et al.
mBio, 10(2) (2019-03-07)
Papillomaviruses exhibit species-specific tropism, thereby limiting understanding and research of several aspects of HPV infection and carcinogenesis. The discovery of a murine papillomavirus (MmuPV1) provides the opportunity to study papillomavirus infections in a tractable, in vivo laboratory model. MmuPV1 infects
Timothy Notton et al.
mBio, 12(1) (2021-01-21)
It has long been known that noncoding genomic regions can be obligate cis elements acted upon in trans by gene products. In viruses, cis elements regulate gene expression, encapsidation, and other maturation processes, but mapping these elements relies on targeted
Hanne R Johnsen et al.
International journal of molecular sciences, 15(1), 830-838 (2014-01-15)
Reliable, rapid and inexpensive detection of cellulolytic enzymes that can be used for a wide variety of biological and environmental samples are currently in high demand. Here, a new cellulase detection protocol is described that circumvents problems observed with popular
Julien Cappelle et al.
PLoS neglected tropical diseases, 10(12), e0005149-e0005149 (2016-12-08)
Despite the increased use of vaccination in several Asian countries, Japanese Encephalitis (JE) remains the most important cause of viral encephalitis in Asia in humans with an estimated 68,000 cases annually. Considered a rural disease occurring mainly in paddy-field dominated
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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/449/386/product-dating-information-mk.pdf

      Helpful?

  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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

      Helpful?

  3. what is the average Mw of this product?

    1 answer

    1. The molecular weight is not determined for this product. Historical data shows an estimated range of 100 - 250 kDa.

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