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370959

Sigma-Aldrich

Lignin, alkali

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Synonym(s):
Lignin, kraft
CAS Number:
MDL number:
NACRES:
NA.23

description

surface tension 43 mN/m (1% aqueous)

Quality Level

form

powder

impurities

5% moisture

loss

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)

transition temp

sintering point 188 °C

solubility

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

density

1.3 g/mL at 25 °C

bulk density

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

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1 of 4

This Item
L9647561126185914
Lignin, alkali

Sigma-Aldrich

370959

Lignin, alkali

Limonin from citrus seeds, >90% (HPLC)

Sigma-Aldrich

L9647

Limonin

Furfural 99%

Sigma-Aldrich

185914

Furfural

transition temp

sintering point 188 °C

transition temp

-

transition temp

-

transition temp

-

density

1.3 g/mL at 25 °C

density

-

density

-

density

1.16 g/mL at 25 °C (lit.)

description

surface tension 43 mN/m (1% aqueous)

description

-

description

-

description

-

impurities

5% moisture

impurities

-

impurities

-

impurities

-

loss

13.4 wt. % loss on heating, @ 316°C

loss

-

loss

-

loss

-

General description

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.

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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Novel applications of lignin in composite materials
Thielemans W, et al.
Journal of Applied Polymer Science, 83(2), 323-331 (2002)
A systematic study of the kinetics of lignin pyrolysis
Jiang G, et al.
Thermochimica Acta, 498(1-2), 61-66 (2010)
Shangxian Xie et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 6(13), 1801980-1801980 (2019-08-06)
Bacterial protein secretion represents a significant challenge in biotechnology, which is essential for the cost-effective production of therapeutics, enzymes, and other functional proteins. Here, it is demonstrated that proteomics-guided engineering of transcription, translation, secretion, and folding of ligninolytic laccase balances
Lignin-based carbon fibers: Oxidative thermostabilization of kraft lignin
Braun JL, et al.
Carbon, 43(2), 385-394 (2005)
Single, binary and multi-component adsorption of copper and cadmium from aqueous solutions on Kraft lignin?a biosorbent
Mohan D, et al.
Journal of Colloid and Interface Science, 297(2), 489-504 (2006)

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