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Merck

434558

Sigma-Aldrich

聚(4-苯乙烯磺酸- co - 马来酸) 钠盐

average Mw ~20,000, powder

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250 G
$123.00

$123.00


预计发货时间2025年4月21日详情


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250 G
$123.00

About This Item

线性分子式:
[CH2CH(C6H4SO3R)]x[CH(CO2R)CH(CO2R)]y, R=H or Na
CAS号:
MDL编号:
UNSPSC代码:
12162002
NACRES:
NA.23

$123.00


预计发货时间2025年4月21日详情


获取大包装报价

表单

powder

质量水平

分子量

average Mw ~20,000

粘度

30 cP, 30 % in H2O(lit.)

密度

0.94 g/mL at 25 °C

SMILES字符串

[Na+].O2C(=O)C=CC2=O.c1(ccccc1)C=C

InChI

1S/C8H8.C4H2O3.Na/c1-2-8-6-4-3-5-7-8;5-3-1-2-4(6)7-3;/h2-7H,1H2;1-2H;/q;;+1

InChI key

AGYUYWQDVRLUBV-UHFFFAOYSA-N

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一般描述

4-苯乙烯磺酸:马来酸的摩尔比为 1:1

应用

防垢。颜料、粘土和填料的分散剂。

特点和优势

高电荷密度。微弱的表面活性,起泡少。

象形图

Exclamation mark

警示用语:

Warning

危险声明

预防措施声明

危险分类

Eye Irrit. 2

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

dust mask type N95 (US), Eyeshields, Gloves


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Hugo Vara et al.
Acta biomaterialia, 90, 71-86 (2019-03-25)
Intraspinal microstimulation (ISMS) may help to restore motor functions after spinal cord injury. ISMS caudal to the lesion activates motoneurons and evokes selective movements with graded force in rats and other mammals. We investigated the safety and effectiveness of conducting

商品

We present an article that discusses two applications in particular; first, using these layers as polyelectrolyte membranes to control permeability.

Questions

1–2 of 2 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

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  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

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