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370959

Sigma-Aldrich

Lignin, alkali

Synonyme(s) :

Lignin, kraft

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About This Item

Numéro CAS:
8068-05-1
Numéro MDL:
MFCD09039274
Code UNSPSC :
12162002
Nomenclature NACRES :
NA.23

Description

surface tension 43 mN/m (1% aqueous)

Forme

powder

Impuretés

5% moisture

Perte

13.4 wt. % loss on heating, @ 316°C
3.3 wt. % loss on heating, @ 149°C
5.7 wt. % loss on heating, @ 204°C
8.5 wt. % loss on heating, @ 260°C

pH

6.5 (25 °C, 5%, aqueous solution)

Température de transition

sintering point 188 °C

Solubilité

NaOH: 0.05% (warm 5% aquesous)
MEK: partially soluble
benzene: insoluble
dioxane: soluble
ethylene glycol: soluble
hexane: insoluble
methanol: partially soluble

Densité

1.3 g/mL at 25 °C

Masse volumique apparente

23 lb/cu.ft (loose)
32 lb/cu.ft (packed)

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Catégories apparentées

Description générale

Lignin, alkali is a complex, three dimensional polymer that is also known as kraft lignin that has undergone hydrolytic degradation. It is one of the major components of lignocellulosic materials. Lignin is a major product for second generation bioethanol production and is an impurity in the separation of cellulose from wood.

Application

Lignin, alkali can be used as a surface treatment agent for composites of natural fibers with petroleum based resins. It can be used as a biosorbent for potential applications in removing toxic metal ions from wastewater.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

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Dong Tian et al.
Biotechnology for biofuels, 10, 157-157 (2017-06-27)
Current single-stage delignification-pretreatment technologies to overcome lignocellulosic biomass recalcitrance are usually achieved at the expense of compromising the recovery of the polysaccharide components, particularly the hemicellulose fraction. One way to enhance overall sugar recovery is to tailor an efficient two-stage
Aiguo Wang et al.
Bioresource technology, 268, 505-513 (2018-08-17)
Maximizing the production of aromatic hydrocarbons from lignin conversion by coupling methane activation without solvent was investigated over Zn-Ga modified zeolite catalyst. The co-loading of Zn and Ga greatly improves lignin conversion, arene yield along with BTEX (i.e., benzene, toluene
Tanja Berger et al.
Folia microbiologica, 66(1), 87-98 (2020-09-26)
The potential of the culturable bacterial community from an Alpine coniferous forest site for the degradation of organic polymers and pollutants at low (5 °C) and moderate (20 °C) temperatures was evaluated. The majority of the 68 strains belonged to
Łukasz Klapiszewski et al.
Carbohydrate polymers, 94(1), 345-355 (2013-04-03)
A new method of synthesis of novel composites obtained from silica and Kraft lignin has been proposed. Silica used in the study was obtained by three methods (hydrolysis and condensation of tetraethoxysilane, precipitation in a nonpolar and polar medium with
Luaine Bandounas et al.
BMC biotechnology, 11, 94-94 (2011-10-15)
To expand on the range of products which can be obtained from lignocellulosic biomass, the lignin component should be utilized as feedstock for value-added chemicals such as substituted aromatics, instead of being incinerated for heat and energy. Enzymes could provide
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