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471003

Sigma-Aldrich

Lignin, alkali

Synonym(s):

Lignin, kraft

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About This Item

CAS Number:
8068-05-1
MDL number:
MFCD09039274
UNSPSC Code:
12162002
NACRES:
NA.23
Pricing and availability is not currently available.

form

solid

mol wt

average Mw ~10,000

impurities

4% sulfur

pH

10.5 (3 wt. %)

application(s)

coatings

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Application

Primary dispersing agent for dyestuffs and agricultural chemicals.

Features and Benefits

Compatible with anionic and nonionic surfactants and wetting agents. Contains no reducing sugars

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
0000401198
0000341930
0000341931
0000401198
0000341931

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Bo Zhao et al.
International journal of molecular sciences, 21(1) (2020-01-08)
Attachment of glycosylphosphatidylinositols (GPIs) to the C-termini of proteins is one of the most common posttranslational modifications in eukaryotic cells. GPI8/PIG-K is the catalytic subunit of the GPI transamidase complex catalyzing the transfer en bloc GPI to proteins. In this
Daniel Pletzer et al.
International journal of pharmaceutics, 596, 120299-120299 (2021-02-02)
Due to the increasing inability of antibiotics to treat multidrug-resistant (MDR) bacteria, metal and metal oxide nanoparticles have been gaining interest as antimicrobial agents. Among those, silver nanoparticles have been used extensively as broad-spectrum antimicrobial agents. Here, we describe a
Anil Kumar Singh et al.
Frontiers in microbiology, 10, 2364-2364 (2019-12-12)
Various chemical compounds emerged including kraft lignin (KL) during the processes of papermaking. These chemical compounds in effluent of the paper industry have hazardous environmental impacts. KL is liable for causing pollution of aquatic and water bodies; hence, it must
S Gouveia et al.
Bioresource technology, 121, 131-138 (2012-08-04)
The potential ability of the laccase from Myceliophthora thermophila, either alone or with low molecular weight (LMW) additives, to polymerise a dissolved lignin from Kraft liquor of eucalypt cooking was investigated. A previous study of enzymatic performance (activity and stability)
Thiranan Kunanopparat et al.
Journal of agricultural and food chemistry, 57(18), 8526-8533 (2009-08-25)
The effect of Kraft lignin (KL) on wheat gluten (WG) network formation during biomaterial processing was investigated. Gluten plasticized with glycerol was blended with a variable content of KL and processed into material by mixing and hot molding. The effect
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Questions

1–9 of 9 Questions  

  1. Hi. I would like to know if this is water-soluble or not. Thank you so much.

    1 answer

    1. Unfortunately, the solubility of this product in water has not been determined. Please see the link below to review a publication that includes a list of solvents for kraft lignin:
      https://bioresources.cnr.ncsu.edu/resources/solubility-parameters-analysis-of-eucalyptus-urograndis-kraft-lignin/

      Helpful?

  2. 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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  3. 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?

  4. I would like to know particle size(D10, D50, D90, D[4,3] ) of alkali lignin (471003)

    1 answer

    1. This material may range in appearance from a powder to a crystalline form. Unfortunately, the particle size is not determined.

      Helpful?

  5. Dear all, Is lignin alkali 471003 from softwood or hardwood? Thank you in advance Regards

    1 answer

    1. The biological source is pine trees which are softwood.

      Helpful?

  6. can I know the % of ash and carbon in lignin(100g) CAS NO: 8068-05-1

    1 answer

    1. The percent of carbon in the product is approximately 47 %. The ash content has not been determined.

      Helpful?

  7. I would like to know how you did the extraction

    1 answer

    1. "Kraft", in regards to the term "Kraft lignin", implies the process by which lignin is extracted from cellulose (eg. wood pulp). Lignin is separated from the cellulose by use of either a hot acid (sulfite) or hot alkaline (sulfate) method. The acidic procedure generally results in lignosuphonates and the alkaline method results in kraft lignins. Both can be said to come from paper pulp production.

      Helpful?

  8. I NEED A MOLECULAR WEIGHT AND SOURCE OF LIGNIN.

    1 answer

    1. This product is extracted from wood pulp, primarily pine. The average molecular weight is 14,200 Daltons.

      Helpful?

  9. Greetings, I would like to know the density, moisture content (%), melting point and sintering point of this type of lignin. Thank you very much!

    1 answer

    1. The density, moisture content, melting point, and sinering point are not determined for this product. Product 370959, alkali Lignin, does list all of these with the exeption of melting point. This is not determined for either product. See the links below to review additional information.

      370959, Lignin, alkali - refer to the PROPERTIES section:
      https://www.sigmaaldrich.com/product/aldrich/370959

      Chemical Books - note melting point published is 257?
      https://www.chemicalbook.com/ChemicalProductProperty_EN_CB9772728.htm

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